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如果某人极度看涨,而且他们变得越来越看涨,最好的做法就是跟他们对着干。
If somebody's heavily bullish and they become incrementally more heavily bullish, the best thing to do is to bet against them.
今天请到的是奥默·锡达,
Joining me today is Omer Cedar,
一位前Two Sigma量化专家,他把人的判断转化成了系统化的超额收益。
an x two Sigma quant who turned human judgment into systematic alpha.
这些聪明绝顶的机器,把过去所有可能的情况都摸透了,但就是没见过疫情。
All these amazing, smart, brilliant machines figured out everything that's possible about the past except they've never seen a pandemic before.
惊喜的程度通常跟你将要获得的超额收益成正比。
The amount of surprise is usually proportional to the amount of alpha you're gonna get.
今天,奥默带我们看看顶级量化专家是怎么从主观信号里赚钱的。
Today, Omer walks us through how top quants make money from discretionary signals.
到处都是赚钱的机会。
There's alpha lying everywhere.
数数现在有多少家对冲基金,五年后,数量翻十倍我都不觉得奇怪。
Count the number of hedge funds you have today, and in five years, I wouldn't be surprised if you have 10 times the number.
嘿。
Hey.
我查看YouTube后台数据时,发现只有大约25%的观众订阅了频道。
When I look at the back end of YouTube statistics, I can see that only around 25% of you guys are subscribed.
我想请大家帮个忙。
And I'd like to ask a favor.
如果你喜欢我们制作的内容,想帮助我们把这个节目做得更好,麻烦点一下订阅按钮,我会非常感激。
If you like the content we create and you want to help us grow this show, if you could hit that subscribe button, I would really appreciate it.
我保证,作为回报,我会尽最大努力为大家带来最好的内容,邀请最好的嘉宾,做最好的采访。
I promise that in return, I will do my best to give you guys the best content we can with the best guests and best interviews we can do.
谢谢,我们回到正片。
Thanks and back to the episode.
Omer,非常感谢你来做客我们的播客。
Omer, thank you so much for coming on the pod.
Ethan,谢谢你的邀请。
Ethan, thank you for having me.
真的很高兴能来这里。
Really excited to be here.
你在Two Sigma待了好几年,那是一家著名的量化交易公司,你当时在那边建了一个系统,专门用来收集人的观点。
You spent years at Two Sigma, famously a quant shop, building a system whose entire purpose was to collect human opinions.
我想问一下,像Two Sigma这样的公司,为什么需要人的观点呢?
Why did a firm like Two Sigma need human opinions, I guess?
对,问得好。
Yeah, great question.
像Two Sigma这样的公司,你知道的,它手里有那么多数据,为什么还需要人的观点呢?
Why does a firm like Two Sigma, you know, with all the data it could possibly have, need human opinions?
其实,这里有个大家不太理解的地方。
Well, here's something that, people don't understand.
这样吧,我给你举个具体的例子,看看这一切是怎么发生的。
Actually it comes down to, I'll give you an exact example of how this all played out.
就是,你知道的,2020年3月10号,新冠疫情那时候,对吧?
And that's, you know, 03/10/2020 COVID, right?
量化模型大概亏了百分之五到十,挺夸张的。
Quant models lost, I think, like five, ten percent, something crazy.
我们亏了很多。
We're down a ton.
基本面经理呢?
Fundamental managers, right?
主观交易的基金经理亏得不多。
Discretionary PMs were not done a lot.
对。
Okay.
大家都在想,这是怎么回事?
And everyone was like, what's going on?
其实呢,就是这些聪明绝顶的机器,把过去所有能学的东西都学透了,但就是没见过疫情。
Well, what happened was, all these amazing, smart, brilliant machines figured out everything that's possible about the past, except they've never seen a pandemic before.
上一次疫情是什么时候?
When was the last pandemic?
19年,对吧?
'19, right?
1918、1919年左右,基本上就是第一次世界大战刚结束的时候。
1918, 1919 around that time, basically right after world war one.
量化模型没见过这种情况,但人类能退一步,运用判断力,展望未来,想象未来会是什么样子。
Quant models hadn't seen that, but humans are able to take a step back, apply their judgment and look at the future and envision what it's going to be.
而且他们不需要任何数据。
And they need zero data.
他们需要经验,但不需要像量化模型那样依赖数据点。
They need experience, but they need zero data points like quant models do.
那为什么还需要人的观点呢?
So why do you need human opinions?
需要人的观点,是因为你不可避免地会遇到一些情况,模型不知道如何根据过去看到的东西来应对未来。
You need human opinions because you will face inevitably times where the models don't know how to treat the future based on things that they've seen in the past.
在投资中,人的判断仍然非常重要。
Human judgment is still very important in investing.
我猜你是在从哲学层面解释为什么是这样,但你能不能具体说说实际操作中是怎么发生的?
I guess you're giving me philosophically why that's the case, but walk me through how it happens in actuality.
比如说,你有一堆投资经理和分析师,他们觉得苹果值得买,英伟达也值得买。
So you have a bunch of say PMs, you have a bunch of analysts, they think Apple's a buy, they think Nvidia's a buy.
从历史上看,你觉得这些人知道自己在做什么。
You think historically, these guys know what they're doing.
那这些想法怎么变成像Two Sigma、Citadel这样的量化机构的交易洞察或量化洞察呢?
How does that become trading insight or quantitative insight for a manager like Two Sigma, like a quant shop, like Citadel, etcetera?
你从这个角度来看,对吧?
Think about it from this perspective, right?
你知道,人的洞察力——而且再说一遍,不是所有的人类洞察或投资者洞察都是同等的。
You know, human insight, and again, it's not all human insight or not all investor insights are created Right.
所以我们说的是非常特定类型的投资者洞察。
So we're talking about very kind of specific type of investor insights.
有些投资者洞察来自专家。
There's investor insights that are experts.
他们之所以是专家,是因为他们花了很多年去建立模式识别和理解,你知道的,市场上发生的各种情况。
And the reason that they're experts is because they've spent, you know, a number of years building pattern recognition and understanding, you know, various situations that happen in the market.
当你想想人类是怎么权衡这些的,其实有一本书专门讲这个。
And when you think about the way that humans weigh this, and there's actually a book about this.
实际上有好几本书都讲过这个。
There's actually a number of books about this.
我们不用深入所有细节,但你可以从这样一个角度来看:专家做决定时,通常只权衡一两个选项。
We don't have go to all the details around this, but think about it from the perspective that, you know, humans, that are experts typically weigh only one or two alternatives when they make a decision.
而机器可以权衡上千个,对吧?
The machines can weigh a thousand, right?
十万个,甚至一百万个不同的数据点。
A 100,000, a million different data points.
人类通常从来不会考虑超过一两个选项。
The humans never consider more than typically one or two alternatives.
你其实可以从消防员身上看到这一点,还有那些承受巨大压力的人。
You can actually see this with like firefighters with, you know, with any kind of like any people who are under a lot of pressure and stress.
通常,专家在做决定时,只会考虑一两个选项,或者一两个备选方案,除了他们最可能选择的那一个。
Typically, when they're experts, they typically only weigh one or two opinions or one or two, alternative decision points outside of what, the one that they're most likely going to choose.
我为什么这么说?
Why do I say this?
因为归根结底,这就像运动员一样,你知道,我们,我们,我们现在是在世界杯期间聊天,对吧?
This is because at the end of the day, it's kind of like athletes, you know, I mean, we're, we're, we're talking during the world cup, right?
你看那些了不起的足球运动员。
I mean, you see some amazing soccer players.
当球传到他们脚下时,他们实际上需要做出多少个决定?
How many decisions do they actually need to make at any given time when the ball comes to them?
可能一个,可能两个。
Maybe one, maybe two.
他们拿到球的时候,就已经知道要怎么处理了。
They already know what they want to do with the ball when they get access to the ball.
人类专家也是一样的。
That's the same thing with human experts.
所以,通过采纳这种意见和有效的流程,你实际上是在依赖那些见过大量信息、在自己领域里积累了肌肉记忆的专家的判断。
So what you're doing by taking this type of opinion and the process that works is you're relying on judgment of experts who have seen a lot of information and have built muscle memory in the space that they operate in.
这大概就是所谓的“群体智慧”形成的方式。
That's kind of how the wisdom of crowds, if you will, has been built.
很多像Two Sigma这样的公司,他们也会收集专家的意见。
And a lot of places like Two Sigma and others where they take opinions of experts.
他们说,我不想要千篇一律的观点。
They say, I don't want just all the same opinions.
我要金融分析师的意见。
I want the financials analysts.
我要覆盖半导体行业的分析师,覆盖餐饮行业的分析师,等等。
I want the analysts that covers semiconductors, the analysts that covers restaurants, all that.
我想要他们所有人的意见,因为最终我会得到一个多元化的视角,了解经济和市场可能如何走向。
I want all their opinions because ultimately I'm going to get a diversified view as to how, you know, both the economy and the market is likely to trend.
而且事实证明,从统计学的角度来看,这是正确的。
And it turns out that statistically speaking, that's correct.
你需要有足够的意见,但当你有了足够的意见,你实际上就能做出一个非常非常好的联合预测,就像对公司发展方向的一个深思熟虑的预测。
You need to have enough opinions, but when you have enough opinions, you're actually able to make a very, very good concerted forecast, like a really thoughtful forecast on where the direction of companies are.
不是每次都准,对吧。
Not always, right.
不是百分之百。
It's not a 100%.
这就是为什么说是统计意义上的,但你的命中率大概在65%到70%之间,如果你有
That's why statistically speaking, but you're actually your hit rates are probably somewhere between 65 to 70%, if you have
好的数据集。
a good dataset.
如果你是学生,喜欢听Omer讲顶级对冲基金如何融合量化和主观判断,那你要注意听了。
If you're a student and like hearing Omer talk about how top hedge funds blend quant and discretionary, listen up.
All Zone Open与Onyx Capital Group合作,后者是全球最大的石油衍生品做市商。
All Zone Open is partnered with Onyx Capital Group, the world's largest market maker in oil derivatives.
Onyx的酷之处在于,它正是Omer所说的,量化和主观判断在最高水平上的交易应用。
What's cool about Onyx is that it's exactly what Omer is referring to, quant and discretionary used to trade at the highest level.
今年七月,他们会在伦敦为大学生举办一场线下活动。
This July, in London, they're hosting an in person event for university students.
参加活动,你就有机会获得实习机会。
Attend, and you'll have a shot at an internship.
如果你是想进入交易领域的学生,你绝对不想错过这个机会。
If you're a student trying to break into trading, you do not want to miss this.
点击下方链接报名,我们到时候见。
Apply at the link below, and I'll see you there.
我想问一下,你能介绍一下你在Two Sigma构建的那个项目的具体细节吗?以及你如何利用人的判断力?
I guess, can you give an overview of the specifics of the program you built out at Two Sigma and how you aim to capitalize on human judgment?
当然可以。
Sure.
再想想看。
Think about it again.
这些分析师都是非常有深度、有思考的。
These are really deeply thoughtful analysts.
这些人花了数十年时间研究行业、市场、政策,他们了解政治格局,总之就是真正去思考所有这些外部因素对公司的影响,以及它的业绩会如何发展,不仅是从基本面角度,还有市场会怎么看,对吧?
These are people who've invested decades learning about industries, about markets, policies, you know, they understand the political landscape, whatever it takes to really think about the, impact right of all these exogenous drivers on a company and how its performance is going to shape out both from a fundamental perspective, but also how the market, right?
金融市场很可能会做出反应,然后在任何时间点买入或卖出这家公司。
The financial markets are likely to react and, you know, buy or sell the company at any given time.
他们做的事情就是把所有这些信息浓缩成评级,比如买入、卖出、持有,或者可能是强力买入、强力卖出之类的,你大概也知道。
And what they do is they boil all that information down typically, as you probably are aware into like ratings, buy, sell, hold, or maybe, you know, it's a rating of like, you know, you know, strong buy and, and, and, and, you know, and strong sell and whatnot.
很多时候,他们甚至根本不会给出接近卖出的评级,就像我们知道的那样。
Very often they don't even have anything close to a sale as we know.
要从他们那里获取信息,这个过程实际上是在模仿人们打电话给他们时的真实做法。
The process of being able to capture information from them involves mimicking a lot of what people actually do when they pick up the phone and call them.
所以现在有一个常规流程,对吧?
So there's a normal process today, right?
如果我是一个基本面投资组合经理,我在管理资金,比如说我管理着五亿到十亿美元。
If I'm a fundamental portfolio manager and I'm managing money, let's say I'm managing a 500,000,000 to a billion dollars.
我大概管理着,比如说,50到60只股票。
I'm, you know, I manage about, let's say 50 to 60 stocks.
我有很多多头仓位,也有很多空头仓位。
I have a bunch of longs, a bunch of shorts.
突然,我的一家公司发布了财报,市场上有很多新信息,我需要建议。
And all of a sudden, one of my companies just reported and there's a lot of new information in the market and I need advice.
我需要好好梳理一下我的投资逻辑。
I need to really talk through my thesis.
我会拿起电话打给卖方分析师。
I'm going to pick up and call a sell side analyst.
那个卖方分析师有很多判断力和专业知识。
That sell side analyst has a lot of judgment and expertise.
他们可能已经跟踪这只股票二十年了。
They've been covering the stock maybe for twenty years.
他们非常了解这家公司。
They know the company well.
他们认识CEO,了解管理层,知道所有这些情况。
They know the CEO, they know management, they know all these things.
我可以聊很多关于那家公司的细节和情况,你能想到的一切,比如它在市场上相对于同行是怎么定位的?
And I could talk through a lot of the nuances and the color about that company, everything that you can imagine related how is it positioned in the market relative to its peers?
如果我是从短期还是长期的角度来看,我该怎么考虑?
If I were looking at it on the short horizon versus a long horizon, how do I think about it?
其他人怎么看它?
What do other people think about it?
这些分析师也像是信息的集合,比如同行们怎么看这个?
These analysts are like collections also of information around what did the peers think about this?
因为他们和很多买方机构交流,他们能给你一种差不多是市场情绪的风向标,等等。
Because they're talking to a lot of the buy side shops, they can give you kind of almost like a gauge of sentiment on it and so on and so forth.
所以如果你想想那些系统性地被问到的问题,像Two Sigma或者其他地方,可以把这些问题编成实际的,比如一个调查问卷,对吧?
So if you think about those types of questions that are asked systematically, a place like, you know, at Two Sigma or other places can codify those questions into an actual, something like a survey, right?
或者像一个网站,人们可以上来输入那些信息,而不是非得打电话一遍遍跟人聊。
Or something like a website where somebody can actually come in and type that information in instead of having to, you know, go through the process of getting on the phone and talking to people again and again.
现在,我是说,未来已经来了,但你知道,智能体系统和能用聊天的方式,对吧。
Nowadays, I mean, is the future already, but, you know, agentic systems and being able to use chat, right.
基本上你可以通过一个聊天机器人来提供所有这些信息。
You can basically provide all that information through a, essentially a chat bot.
但显然,在我们做这件事的时候,也就是差不多二十年前,想法是你在网站上做,用某种调查问卷的形式,但核心就是用网页表单替代了必须给那些人打电话的流程。
But obviously back in when we were doing it, you know, a couple of decades ago now, the idea was, you know, you did it on a website, you did it in some kind of a survey format, but the idea is the web form replaced having to make human calls to those people.
现在你收集到很多信息,对吧?
And now you're gathering a lot of information, right?
从定量的角度,关于他们对公司相对于同行和市场的定位怎么看。
Quantitatively about, what do they think about the company's positioning relative to their peers, the market?
他们怎么看待短期和中期的情况?
How do they think about them on short horizon versus the medium horizon?
还有他们怎么看,或者同行们怎么看这个?
And how do they think about, or how do the peers think about this?
其他买方同行对这些事情怎么看?
How do other buy side peers think about these things?
这些其实就是我们当时在做的那种编码化,最终给你一个标准化的数据集。
Those are really kind of the codification that we were doing and gives you essentially, a normalized dataset.
所以现在想想,大家都在回答类似的问题,但涉及的公司数量却非常非常不同。
So think about it now, everybody's answering similar questions on very, very different number of companies out there.
我们说的是全球几千家公司,你知道,三千、四千家,你都在收集这些信息,而且是持续不断地做。
We're talking about thousands of companies, you know, 3,000, 4,000 companies globally that you're corralling all this information on, and you're doing it continuously.
现在你有了这个数据集,它非常强大。
Right now you have this dataset that's really powerful.
当你看着这个数据集,你会说,哇,我有多个观点,但它们都在多个时间维度上,对同行吸引力进行了标准化。
As you're looking at this dataset, you say, wow, I've got multiple opinions, but they're all normalized right on multiple horizons on peer, peer, you know, attractiveness.
这几乎就像所有这些分数现在可以被汇总和捆绑起来,你可以说,从均值或中位数的角度来看,平均值或群众的智慧是什么?
And it's almost like all these scores now can be aggregated and bundled into something that you can say, what is the average or the wisdom of the crowds from a mean perspective or median perspective?
而且通常平均来说,这些结果相对还不错。
And typically on average, those are relatively okay.
这些是你想要做出的预测,前提是你和那些有判断力的好人一起工作。
Those are forecasts that you want to make provided that you're working with good people with judgment.
一般来说,这些预测不是已经被市场消化了吗?
And in general, are those forecasts not already priced in?
因为我想,现在我知道这就是这里的矛盾所在。
Because I imagine now I know this is the tension here.
你试图利用群众的智慧,也许你瞄准的是专家,但他们肯定也在市场上建了很多仓位。
You're trying to capitalize on the wisdom of crowds and maybe you're targeting experts, but surely they've also put on a lot of the positions in the markets.
这两者之间还有差距吗?嗯,我想这就是硬币的两面吧。
Is there still a delta between that and, yeah, I guess those two sides of the coin?
是的,这是个好问题。
Yeah, it's a great question.
这取决于一件非常重要的事情。
It depends on one really important thing.
你具体提到这个,我想说的是,你之所以能捕捉到市场的错误定价,原因只有一个,那就是所谓的采样频率。
And you're talking about this specifically, I want to say, the reason that you're able to capture mispricings in the market has to do with one thing, and that's called sample frequency.
你收集数据越快,收集数据越频繁,就越有可能捕捉到错误定价,因为你想一想。
The faster you collect the data, the more frequent you collect the data, the more likely you are to catch mispricings because think about it.
人们并不是每天都在交易,对吧?
People are not trading every day, right?
他们在思考问题。
They're thinking about things.
他们在做判断。
They're making judgments.
他们在接收信息。
They're taking in information.
在接收信息的过程中,他们会形成自己的观点。
And as they're taking in information, they formulate an opinion.
如果在某个特定时间点被问到他们的观点,他们可能会在明天、后天、大后天采取行动。
And if they're being queried on that opinion at a particular period of time, they may take an action tomorrow, the next day, the next day.
但关键在于,他们被询问了他们的观点。
But the idea is that they're asked for their opinion.
如果你以足够高的频率去问,不是那种超高频率,而是足够高的频率,你就能捕捉到一种非常有用的行为模式,比如,我注意到他们对这家公司变得更乐观了,对那家公司变得更悲观了。
And if you ask it with enough of a high enough frequency, not like a super high frequency, but a high enough frequency, you're able to catch a very, very useful pattern of behavior, which is, oh, I'm noticing that they're becoming more bullish on this company, more bearish on this company.
我注意到他们认为这家公司相对于同行正在改善。
I'm noticing that they're thinking that it's improving relative to its peers.
我注意到大家对这家公司的情绪在改善,因为你收集得够频繁,对吧?
I'm noticing that sentiments improving on the company because you're collecting it frequently enough, right?
如果你一年才收集一次,那当然。
If you were to collect it once a year, yes.
很多信息早就反映在价格里了。
A lot of it would be priced in.
如果你一个季度收集一次,很可能也已经反映在价格里了。
If you were to collect it once a quarter, most likely be priced in.
我们说的是比这频繁得多的收集频率。
We're talking about much more frequent than that.
有哪些行为指标让你觉得出乎意料,或者真正影响了结果?
What were some of the behavioral indicators that moved the needle that surprised you?
你知道吗,我觉得其实没有太多让我特别惊讶的地方。
You know, I would say that things weren't, I wouldn't say super surprising to me.
我们在数据里看到的很多东西,其实印证了我们之前的一些想法,因为你还是在寻找群体智慧的模式。
A lot of things, a lot of things that we saw in the data confirmed some thinking that we had because, you know, again, you're looking for patterns around wisdom of crowd.
我觉得最不直观的发现大概是这些,对吧?
I guess here are the things that I would say were probably felt least intuitive, right?
这就是你要找的东西。
That's what you're looking for.
你要找的是那些最不直观但合理的信号。
You're looking for signals that are least intuitive, but makes sense.
大多数时候,当人们看涨,非常看涨或者非常看跌,然后他们变得更加看涨,甚至更看涨或者更看跌。
Most of the time when people are bullish, heavily bullish or heavily bearish, and they become more heavily bullish, even more bullish or more bearish.
你觉得从股价的角度来看,这传递了什么信号?
What do you think the signal is from there from a stock price perspective?
我觉得很明显,看涨就涨,看跌就跌,应该是这样吧。
I mean, it's obvious like bullish up, bearish down, I imagine.
那我告诉你,如果某人非常看涨或者非常看跌,然后他们变得更加看涨或看跌,最好的做法就是跟他们对着干。
Well, I'll tell you what, if somebody is heavily bullish or heavily bearish and they become incrementally more heavily bullish, heavily bearish, the best thing to do is to bet against them.
好的。
The Okay.
最好的做法就是跟他们对着干。
Best thing to do is to bet against them.
这可能是你能做的最让人意外的事情之一。
That is probably one of the more surprising things that you can do.
哇,这可是个专家。
Wow, this is an expert.
他们很有判断力。
They have a lot of judgment.
你什么意思?
What do you mean?
他们非常看涨,而且越来越看涨。
They're super bullish and they're getting even more bullish.
实际上,这就是人类行为的问题所在。当人们变得过度自信,或者不说过度自信,而是对公司的故事和叙事感到极其舒适时,他们没有意识到市场通常已经跑在了对公司本身的预期前面。
Actually, this is the problem with human behavior when people become overconfident or not say overconfident, but they've become extremely comfortable with the story and the narrative of the company where they don't realize that typically market has outrun the expectations on the company itself.
所以通常发生的情况是,当市场对某件事非常看涨或非常看跌,非常非常看涨或非常非常看跌时,就该反着来了。
So what usually happens is when the street is really bullish or really bearish, very, very bullish or very, very bearish on something, it's time to go in the opposite direction.
因为到那个时候,所有东西都已经反映在价格里了。
It's because at that point in time, everything is priced in.
而且,你知道,你可以用市场来看这个。
And, you know, you can look at that with the markets.
你也可以用证券来看这个。
You can look at that with securities.
就是,人们常说的超买超卖,对吧?
It's, you know, people call it overbought oversold, right?
其实就是在那个时候,事情往往会发生转变。
It's really at that time that things tend to change.
所以你要找的是,人群中第一个开始逆着大众方向走的人。
So what you want to look for is the instance of the first person in that crowd.
就是那个开始跟大众对着干的人。
That's starting to go against the crowd.
那个敢于做出与大众相反的大胆预测的人。
That makes a bold prediction against the crowd.
所有人都看涨。
Everybody's bullish.
所有人都看跌。
Everybody's bearish.
第一个站出来说‘嘿,我觉得这行不通了’的人。
The first person that walks out and says, Hey, I don't think this is going to work anymore.
那就是你想要的信号。
That's the signal you want.
那时候你就该进场,说‘好,是时候支持这个人了’,不管是谁,因为他们是在逆势而行。
And that's when you want to pile in and say, all right, time to throw my hat behind this guy because, or whoever it is, because they're moving against the crowd.
这种戏码我们看过一千遍,甚至十万遍了。
And we've seen this movie a thousand times or a 100,000 times.
而那部戏告诉你,当整个市场都看涨时,有人站出来说‘我觉得不对,皇帝没穿衣服’。
And that movie tells you that when the rest of the street is bullish and someone walks out and says, okay, I don't think this, the emperor has no clothes.
就是这样。
That's what it is.
皇帝没穿衣服。
The emperor has no clothes.
那你就得退一步。
Then you have to pull back.
真有意思。
Fascinating.
我是说,你这么一解释,听起来很有道理,而且你讲的是人的行为,但我真的挺惊讶的。
I mean, it makes sense now that you explain it and you're talking about human behavior, but I'm genuinely surprised.
我本来以为,任何看涨的信号都意味着更高的预期回报,而看跌的信号则意味着股票更可能下跌。
I would have imagined any bullish signal would entail a greater expected return and a bearish one would entail that the stock is more likely to go down.
非常惊讶。
Very surprised.
哇。
Wow.
这是个有趣的实验。
It's a fun experiment.
但实际情况是,这就要说到第二点,你也许可以从数据分析的角度来思考。
But the reality is that this is really where it comes down to the second piece that you probably maybe can think about from the perspective of data analysis.
这通常就是人们所说的“德尔塔”。
And that's oftentimes people call the Deltas.
信息的变化比信息的水平或当前状态更重要。
The change in information is more important than the levels or the current state of the information.
有道理。
That makes sense.
你总是在关注状态的变化,而不是实际状态本身。
You always are watching for the change in the change in the state versus the actual state.
这能告诉你很多关于你预期的信息,因为状态的变化通常是你拥有的最强信号之一。
And that tells you a lot about what you expect because the change in the state is usually one of the strongest signals you can have.
这就是为什么我说,当状态发生变化时,尤其是当变化方向与实际水平相反时,你会得到一些有趣的信号。
That's why I said there's a change when there's a change in the state, especially in the opposite direction of the, of the, of the actual level, you get some interesting signal.
同样,当一个人突然对某个名字有了看法,而之前完全没有看法时,也是一样的道理。
The same thing when somebody has no view on all of a sudden a name and all of a sudden they have a view on a name.
你可以这样想。
Think about it this way.
他们之前犹豫不决,现在下定决心了。
They're on the fence, and now they're off the fence.
这种状态的变化是非常有力的信号。
That change in state is a very powerful change.
那么,对于那个特定的情况,他们最终选择的方向,是否与资产价格变动的预测或预期方向一致呢?
And does it, so for that specific one, does the direction that they end up going in align with the direction, the predicted or expected direction of the asset price movement?
在那个时候,是的。
At that point in time, does.
所以,正如你所说,想想看,是的,我们之前提到过,如果某人变得更加看涨或看跌,而你当时认为,嘿,那可能是个正确的信号。
So to your point, think about, yes, when we said earlier, hey, if somebody becomes more bullish or more bearish and you thought, Hey, that, you know, that would probably signal correctly.
如果他们之前犹豫不决,那么这就是你想要的信号,可以跟随他们。
If they were on the fence before, then that is the signal you're looking for to align with them.
因为一个花了很多时间分析公司,反复研究,最终决定不再犹豫,要对那家公司做出判断的人。
Because somebody who spent all their time analyzing companies and kind of analyzing and analyzing and finally decides it's time to get off the fence on that company.
这是真实的信息。
That's real information.
如果他们之前已经看好或看空这家公司,然后变得更加看好。
If they were already bullish or they were already bearish on the company and they became incrementally bar bullish.
好的。
Okay.
那没问题。
That's fine.
你本来就喜欢它。
You like it.
现在你更喜欢它了。
And now you like it even more.
好吧。
All right.
这是很好的信息。
That's good information.
但真正有价值的信息是,你原本没有观点,现在有了。
But the really powerful information is you didn't have an opinion and now you do.
分析师为什么会给你他们的观点?
Why would an analyst give you their opinion?
你知道,他们是外部人员,不为Two Sigma工作。
You know, they're external, they don't work for Two Sigma.
你知道,这怎么运作?
You know, how does that work?
为什么你会以那种方式分享alpha?
Why would you share alpha in that way?
这是个好问题。
It's a great question.
非常好的问题。
Really great question.
而且有一个数字。
And there is a number.
我觉得在金融市场工作有一个好处,就是大多数事情最终都可以归结为我们所说的共同利益。
I mean, one of the nice things about working in the financial markets is that most things you can actually boil down to what we think people call shared incentives.
所以这真的就是关于共同利益的问题。
So it's really about shared incentives.
他们参与的动力是什么呢?
What are the incentives for them to participate?
这确实和他们能获得的两种激励密切相关。
And it really is very much related to two types of incentives that they can get.
显然,在金融市场里大家最常谈到的激励就是金钱上的激励。
Obviously the common, most common incentive everybody talks about in the financial markets is financial incentives.
没错。
Sure.
但是,你知道,每个人参与金融市场都会得到金钱上的激励。
But, you know, everybody gets financial incentives to participate in the financial markets.
而且有人可能会说,金钱激励其实就像入场券一样,对吧?
And one would argue that financial incentives are actually almost like table stakes, right?
对。
Sure.
我的意思是,你可以给某人分一部分收入,比如说策略的收入,或者你产生的盈亏。
I mean, you can give somebody a share of the revenue, for instance, of the strategy or, or the, the P and L that you're generating.
所以你可以说,嘿,我要用这个信息来投资。
So you could say, Hey, I'm going to invest using this information.
如果成功了,你就能分到一部分收入,他们对此会很兴奋。
And if this is successful, then you'll get a share of the revenue and they're excited about it.
当然,他们也希望参与一些很酷的事情,比如新的阿尔法捕获产品。
And of course they want to be part of something cool like, like the new, new alpha capture product.
这确实是一个不错的初始激励,不是个坏的起点,但实际上,这并不能支撑你两三年、五年后的项目发展。
And that's definitely a beginning incentive that, that, that is not a bad place to start, But that actually that's not going to carry you two, three, five years into the program.
想想看。
Think about it.
他们一直在持续参与这个项目。
They're continuously participating in the program.
他们需要的不仅仅是知道会有一些经济激励,因为与此同时,其他事情也会一起涌来。
They need more than simply just knowing that they're going to have some financial incentives because all of a sudden other, other things are hitting them at the same time.
在这个行业里,大家通常都很忙,你可能也知道。
People tend to be very busy in this, as you probably know, in this industry.
总是有别的客户需要分析。
And there's always something else that they have to analyze another client.
他们还得跟别人沟通,给出反馈。
They have to talk to another piece of, you know, feedback they have to give.
所以,很多时候,比任何经济激励更重要的,其实是信息激励或者分析支持。
So what's really actually more important than any type of financial incentive oftentimes is an informational incentive or an analytics.
基本上,你自己给他们一些信息上的优势?
Basically, you give them some kind of an information edge yourself?
你能给他们提供一些分析上的优势吗?
Can you give them some kind of an analytical edge yourself for them?
你能把你的分析优势和信息优势分享给他们吗?
Can you give them your analytical edge and your information edge?
这正是我们花了很多时间思考的问题,因为说到底,一位来自非常著名的华尔街大投行的分析师告诉我们,他说,我的第一个电话,在股票公布财报或者市场发生大事之后,我打的第一个电话,不是给我付费最高的客户。
And that is what we spent a lot of time thinking about because at the end of the day, what, one of the analysts at a very famous bulge bracket bank told us, he said, my first call, my first call after a stock, let's say reports earnings or something big happens in the market is not my highest paying client.
而是给我付费排名第八的客户。
It's my eighth highest paying client.
我就问,为什么是第八高的客户?
And I'm like, why is it your eighth highest paying client?
你为什么要先给第八高的客户打电话?
Why would you call your eighth highest paying client first?
他的回答是,因为第八高的客户能让我变得更聪明。
And the response is because my eighth highest paying client makes me smarter.
我可以和他们交流想法。
I can bounce ideas off of them.
然后我就可以给我付费最高的客户打电话,显得自己特别聪明。
And then I can call my highest paying client and sound really smart.
我很好奇,你会针对卖方分析师吗?
Just curious, would you target sell side analysts?
这个项目是什么?
What was the program?
我想,你能更详细地介绍一下这个项目吗?
I guess, can you give me a more in-depth description of the program?
当然可以。
Sure.
嗯,你想想看,那时候我们说的是,这又是几十年前的事了,卖方阿尔法捕获还不存在。
Well, think about it from the perspective of, you know, at that time we're talking about this is again, a couple of decades ago, side alpha capture didn't exist.
全都是卖方阿尔法捕获,也就是说买方,对吧?
It was all sell side alpha capture, meaning the buy side, right?
也就是说,投资经理会去询问或采纳卖方贡献者的意见。
I e the investment, investment manager would query or take the opinions of sell side contributors.
而其中一个先驱是一位叫马歇尔·韦斯特的经理。
And one of the pioneers of that is a, is a manager called Marshall Waste.
你从来没听说过他们。
You've never heard of them.
他们启动了一个叫TOPS的项目,真正开创了alpha capture的先河,基本上就是告诉卖方,他们说,你知道吗?
And they started a program called tops where they really pioneered, you know, alpha capture, where they basically told the sell side, they said, you know what?
其实这件事,你大概也能查到相关资料。
And it was actually, you can probably read about this.
这其实是Marshall Waste两位创始人之间的一个赌约,基本上一个说卖方没有价值。
It was a bet between, you know, the two founders, Marshall Waste, that they basically one said the sell side has no value.
他们只是在鹦鹉学舌,转述他们读到的信息。
They're simply just parroting off information that, that, you know, they read.
然后他的联合创始人说,不不不。
And, you know, his co founder said, no, no, no.
我觉得卖方是有价值的。
I think the sell side has value.
所以他们真的雇了一个实习生,用整个夏天,大概六个月的时间,去收集卖方的观点,然后测试这些观点到底有没有价值。
So they actually hired an intern to collect sell side ideas for an entire summer, I think, for almost maybe a six month period and test out whether those ideas had, value.
结果发现,卖方确实有一些价值。
It turns out that the sell side does have some value.
所以他们最后不只是把这个当成实习项目,还给了那个实习生一个机会——顺便说一句,他现在是市场上最成功的人之一——让他基于这个研究,也就是那个暑期项目,去开创一个策略。
And so they ended up putting that not just as an intern project, but they actually gave the intern, by the way, one of the most successful people in this market, an opportunity to start a strategy on the basis of this science, this basically summer project that he had.
结果呢,大概五六年之后,他们靠那个策略管理的资金差不多达到了一百亿美元。
And lo and behold, about five, six years later, they're running almost $10,000,000,000 off of that strategy.
他们后来发现,其实这事儿挺简单的。
And what they did was they basically realized that it's actually quite simple.
就是让他们帮你管理一个投资组合,或者一个虚拟的投资组合。
Just ask them to manage a portfolio for you or a fictitious portfolio.
告诉他们你有多少筹码。
Tell them here's how many, you know, marbles you have.
你有多少钱。
Here's how many dollars you have.
其实无所谓。
It doesn't really matter.
把你的钱交给他们,让他们帮你建一个投资组合,看看他们会选哪些股票放进去。
Put your eggs into them and help me build a portfolio and see what stocks they put into those.
一般来说,如果这些人聪明的话,他们很可能会把正确的东西放进投资组合里。
And generally speaking, if these are smart people, then they'll probably put the right things into the portfolio.
最终你就能聚集足够多这样的人,再次赚钱,因为这里面有群体的智慧。
And eventually you'll be able to corral enough of them and make money again, because there's a wisdom of crowds there.
Two Sigma 后来也这么做了。
Two Sigma did years later.
Marshall Way 大概在2002年、2003年就开始这么做了。
So Marshall Way started that probably back in 2002, 2003.
Two Sigma 大概是在2006年、2007年那段时间。
Two Sigma was probably in the 2006, 2007 period.
我们那时候也开始做了。
We were starting that then.
我们决定不让他们管理投资组合,而是说,不如你给我们更多你的想法,我们更感兴趣的是你的想法,但我们不在乎投资组合管理。
Decided that rather than asking them to be able to manage a portfolio for you, we said, how about you give us more of, we are more interested in your ideas, but we don't care about portfolio management.
我们在乎的是你的想法,还有你基本上回答一些问题,就像我们说的,在一个特别结构化的调查里,对吧?
We care about your ideas and we care about you basically answering some questions, like we said, in a particularly structured survey, right?
所以收集信息的机制通常是,他们通过某种网站把信息输入进去。
So the mechanism of collection was usually, that, some kind of a website that they enter that information into.
然后作为回应,他们实际上会得到反馈,了解自己与华尔街其他人的差异有多大。
And then in response, they actually got feedback about how different they were than the rest of the street.
以及,你知道,其他所谓的分析师对他们关心的公司有什么看法?
As well as what is, you know, what are some of the other quote unquote analytics saying about the companies that they care about?
所以他们给我们信息,我们也给他们信息。
So they gave us information and we gave them back information.
所以这变成了一种信息交换,他们觉得参与其中不仅能在Two Sigma产品的成功中获得金钱上的回报,还能获得那些令人垂涎的信息。
So it became kind of an information exchange where they felt they were getting value, not just monetarily by joining in, in the, in the success of the Two Sigma product, but also being able to get, access to the information that was coveted.
Two Sigma有很多很棒的信息,这能帮助他们在分析的公司上获得更多优势。
Two Sigma had a lot of great information and that would help them have more of an edge on the companies that they're analyzing.
你提到了Marshall Wace的alpha捕捉项目,以及它与Two Sigma的不同之处。
You mentioned Marshall Waste's alpha capture program and then how that differed from Two Sigma's.
我知道Citadel也运行过卖方alpha捕捉项目,最近Ken Griffin还在做其他事情,甚至试图为买方也这样做。
I know Citadel would also run a sell side alpha capture program and recently Ken Griffin's doing other stuff, trying to even do it for buy side.
我想问一下,在这个领域,竞争优势到底从哪里来?因为我觉得每个人都在努力让所有卖方分析师提供见解,或者通过模拟投资组合提交交易。
I have a question about where competitive advantage comes from in this space, because I imagine everyone's trying to get all the sell side analysts to give either insight or submit trades through a paper portfolio.
如果每个人都能做同样的事情,那竞争优势从哪里来呢?我猜在最高层面上是这样的。
Where does competitive advantage come from if everyone can do the same thing, I imagine at the top level?
是的,我觉得竞争优势来自两个方面。
Yeah, I would say that the competitive advantage comes with two things.
一个是背景信息,另一个是细微差别。
One is context and the other thing is nuance.
市场,它们就存在于细微差别之中。
The markets are, they live in the nuance.
那是什么意思呢?
What does that mean?
意思是,当然,
That means that sure.
每个人基本上都了解特斯拉的大致状况。
Everyone really understands generally speaking what the state of the state is in, let's say Tesla.
好的。
Okay.
你知道,这大概就是收入可能会是什么样子。
You know, this is probably what revenues might look like.
这是我们根据现有信息,大致认为可能会发生的情况。
This is what marginally we think is going to happen based on what the information might look like.
不过,特斯拉可能不是一个好例子,因为大家都知道,特斯拉的产出波动很大。
Now, Tesla might be a bad example because there is a lot of variability in Tesla's output, as we know.
有时候他们的产量数据远超预期,有时候又完全不及预期。
Sometimes their production numbers blow away and sometimes the production numbers totally miss.
但总体思路你是对的。
But the general concept is you're right.
很多人确实在这些公司上做了大量研究。
A lot of people do a lot of work on the companies.
有很多公开信息可以帮助你了解背景情况。
There's a lot of publicly available information to help you get in an understanding of context.
再说一次,伊森,这是基本功。
That's again, Ethan, that's table stakes.
理解背景对每个人来说都是基本功。
Understanding context is table stakes for everyone.
你最好真的懂。
You better actually understand.
如果不懂,就别玩这个游戏了。
And if you don't, don't even bother playing the game.
就像走进扑克桌一样。
It's like walking into a poker table.
你至少得够格下注。
You better be good enough to be able to play with the ante.
然后你才能决定怎么玩后面的牌局。
And then you might want to decide how you want to play the rest of the game.
但你得先够格才行。
But you have to be good enough.
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这就是所有买方阿尔法捕获项目的核心概念。
And that's really the notion of all these buy side alpha capture programs.
前提是你合作的人足够优秀。
The assumption is you're working with people who are good enough.
然后问题就变成了,你现在有机会捕捉细微差别。
And then the question is now you have an opportunity to capture nuance.
而细微差别才是真正强大的部分,因为边际信息正是从这里来的。
And nuance is the part that's actually really powerful because that is the part that really where marginal information comes in.
记得我们说过,变化比绝对水平更重要。
Remember, we talked about this concept of the change is more important than the actual level.
所以如果你在捕捉信息的变化,你实际上是在进入人们所说的公司信息传播流。
So if you're capturing changes in the information, what you really are entering into something people call the propagation flow of a company.
想想投资者。
Think about investors.
投资者总是在投资。
Investors are always investing.
他们每天都在做交易,对吧?
They're making trades every day, right?
他们买进,卖出。
They're buying, they're selling.
而且,基本上有时候新信息进入市场时,并不是同时到达所有人的,对吧?
And there's a, there is essentially sometimes when new information comes in into the marketplace, it doesn't come in all at the same time, right?
不是所有信息都在同一时间出现,然后每个人都在下午5点52分就知道了所有信息。
Not everything comes in and everybody knows all the information right then on, you know, 05:52PM.
每个人都知道一切。
Everybody knows everything.
不是的。
No.
实际情况是,信息来了,有人先知道了。
What happens is information comes in, someone learns about it.
有人形成观点,进行交易,下一个人知道了,形成观点,然后交易。
Someone formulates an opinion, someone trades, the next person learns about it, formulates an opinion and trades.
当然,没错。
Now, sure.
在财报季,信息会大量释放,但在财报之间的时间段里,你会看到很多有趣的时期,实际上会有某种信息释放、一定量的分析,然后是传播,也就是说股票开始波动,而且不是一下子全部波动。
During earnings, that's a big release of information, but intra earnings during intra periods, you're going to see a lot of interesting periods where you actually have information release of some kind, some amount of analysis, then a propagation, meaning the stock starts to move and it doesn't move all at once.
它开始一天一天地小幅波动。
It starts to move a little bit day by day.
这是因为人们正在消化这些信息。
And that's because people are assimilating this information.
他们在对Bavvy进行投资。
They're making investments on Bavvy.
顺便说一下,有时候他们会花好几天来建仓。
Sometimes by the way, they're putting on positions across multiple days.
所以他们不会一次性全部买入或全部卖出。
So they're not buying it all at once or selling it all once.
他们会一点一点地买,一点一点地买,再一点一点地买,然后反过来一点一点地卖。
They'll buy a little bit and buy a little bit and buy a little bit and buy a little bit and do the opposite sell.
所以,如果你理解了这些细微差别,你就可以构建一个投资策略,基本上能顺应股价的传播曲线,随着公司因信息公布而上涨或下跌,你就能抓住机会。
And so when you have that approach, if you understand all those nuances, you can build an investment strategy that basically fits into the propagation curve as the company starts going up in price because information becomes known or down because information becomes known negatively.
你就能捕捉到与这种传播相关的超额收益。
You're able to capture the alpha associated with that propagation.
而这最终成为数学上非常非常有趣的部分。
And that ultimately becomes the part that is very, very interesting mathematically.
你实际上可以证明这在市场中确实会发生,但这就是很多人在玩超额收益捕捉游戏时的玩法。
You you can actually prove it They actually happens in the marketplace, but that's the game that a lot of people are playing in alpha capture.
他们明白自己不会是第一个进场的人。
They recognize that they're not going to be the first in.
他们也不想成为最后一个,但他们希望至少能处于传播曲线的前四分之一,比如第一个四分位,因为这样你就能捕捉到足够的超额收益,让这个策略持续盈利。
They also don't want to be the last in, but what they want to be is at least in the top quartile, let's say the first quartile of the propagation curve, because then you're able to capture enough alpha to make it a profitable strategy to continue.
在这些变化中,有多少是真正的超额收益?
In those changes, how much is truly alpha?
因为我想可能有一些因素,比如其中可能有一些动量效应,我知道这可能不是一个好例子,但像财报或重大新闻事件,我猜动量会是一个驱动因素,因为可能整个市场都会以类似的方式移动。
Because I imagine there are some factors, maybe there's some momentum in there, I know this is probably a bad example, but an event like earnings or something big happening in the news, I imagine a lot of momentum, I imagine momentum is a driver in those things because maybe the whole market will move in a similar way.
对,我就是好奇你怎么看这个问题。
Yeah, just curious how you think about that.
我觉得任何变化,就像你说的,任何信息的发布以及相关的超额收益,都取决于市场对这个信息的惊讶程度。
The way I think about any kind of change, as you discussed, any information release and the alpha associated with it, has to do with how much surprise there is to the market information.
惊讶程度通常和你能获得的超额收益成正比。
The amount of surprise is usually proportional to the amount of alpha you're going to get.
动量以及你提到的所有因素,不管是贝塔,还是增长转向价值,还有轮动,这些都会发生。
Momentum and all factors that you're talking about, whether it's a beta, know, and you know, growth is moving in value and there's rotation.
当然。
Sure.
这些都会发生。
That's going to happen.
之所以会发生,是因为现在市场上超过60%的资金流都是被动投资。
And that's going to happen because 60% plus of all the flows in the market today are passive.
ETF,你知道的,就是那些大型被动投资工具,还有养老基金、主权财富基金等等。
ETFs, you know, I mean, passive, big, big vehicles and pension funds and sovereign wealth funds and all that.
他们都在做被动投资。
They're doing passive investing.
他们没时间逐一分析每只股票,对吧?
They don't have the time to analyze every single stock, right?
他们只是投资于动量、质量、成长或者你提到的某个因子。
They're just investing in momentum or quality or growth or some aspect of a factor that you're talking about.
这相当于同时买入数千家公司,然后每天一点点地推高它们。
And that's buying thousands of companies at the same time and just pushing them along a little by little every day.
这就是你所说的那种让股票大幅波动的东西。
That is the thing that you're talking about that are sort of moving the stock a lot.
不过,你想想财报发布时会发生什么,对吧?
However, if you think about what happens during an earnings release, right?
尤其是当财报结果让市场其他人大吃一惊的时候。
And especially if the earnings release is a big surprise to the rest of the street.
再说特斯拉的产量数据,大家本来预期也就那样。
Again, Tesla's production numbers were expected to like be, you know, whatever.
我,某个数字,你知道的,50万,结果他们公布的是60多万,比预期大得多,市场根本没准备好。
I, some number, you know, 500,000 and it turns out that they came in 600,000 something surprisingly larger and the street was not ready for it.
你会看到股价上涨,那就是阿尔法,对吧?
You're going to see a pop in the stock and that's going to be alpha, right?
这不是传统的、你提到的那些风险,也就是人们通常说的因子溢价所能捕捉到的。
That's not going to be captured by the traditional, all the risks that people you're talking about, the, what people typically refer to as premium factor premium.
好的。
Okay.
那就是阿尔法。
That's alpha.
另外,有时候每天也能看到一点点阿尔法,就是当有边缘信息出来,人们开始模拟和交易的时候。
Also there's sometimes little bits of alpha that you can see every day when again, there's a marginal piece of information that comes out and people are starting to simulate and trading it.
而市场其他部分还没有真正跟上。
While the rest of the market isn't truly like caught up on it yet.
所以你会看到在信息发布之间,时不时有一些小的阿尔法出现。
So you'll see little pieces of alpha come across, in, in, you know, in between information releases.
但伊桑,最重要的事情可能是要明白,这真的取决于投资者感到的意外程度。
But Ethan, the most important probably thing to think about is it really comes down to the level of surprise that the investors have.
投资者做出决定,然后说,哇,现在情况比我预想的要好得多,或者糟糕得多。
And the investors make a decision and say, oh, wow, it's now going to be much better than I thought, or much worse than I thought.
我必须改变我对这项投资的看法。
I have to change the way I think about the investment.
这就会在阿尔法上产生大的波动。
And that creates a big move in alpha.
有哪些方法可以量化这种意外?
What are some of the ways you can quantify surprise?
通常,意外是通过某种共识指标来量化的。
I mean, surprise typically is quantified using some kind of a consensus metric.
想想看,市场对公司的盈利、销售以及公司将要报告的任何数字都有共识指标。
So think about, the street has consensus metrics on earnings, on sales, on any kind of numbers that the company is going to report.
你可能熟悉FactSet,对吧?
Think about you're probably familiar with, FactSet, right?
你听说过这个词,你知道,FactSet 有一个共识预期。
You've heard of the word, you know, FactSet has a consensus.
你知道,彭博也有共识预期,所有主要的提供商,那些大型分析公司,他们做的事情就是查询整个卖方,也就是所有分析师,所有大银行,然后问他们:告诉我你对盈利的看法,或者你认为销售额会是多少。
You know, Bloomberg has consensus, all the major, providers out there, these big analytics companies, what they do is they query the entire sell side, you know, base of analysts, all the big banks, and they ask them, tell me your opinion on the, on earnings or what you think sales are going to be.
而且,这不仅仅是,再说一遍,这不仅仅是打个电话问问什么的。
And there's, it's not just, again, it's not just a, a phone query or something.
我的意思是,现在所有这些都已经结构化,都在模型里,而且都是系统化的,但数据基本上会进入数据库系统,然后你最终得到一个共识指标。
I mean, all this is now structured and these are in models and they're all systematic, but the data basically goes into the database systems and then you end up getting a consensus metric.
所以它告诉你:这是我们的预期。
So it tells you here's what we expect.
今天早些时候,美光发布了财报,对吧?
Earlier today, Micron reported, right?
我觉得他们的营收超出了预期一些。
I think they beat, revenues by a handful.
我记得可能超出幅度超过10%,营收甚至超出12%。
Like I think it was probably over well over 10%, 12% beat on even revenues.
嗯,当时确实有一个共识指标。
Well, there was a consensus metrics.
分析师们预期美光会产生一定数量的收入,结果他们实际收入比预期还要高。
Analysts expected Micron to generate a certain amount of revenues and then they came in even higher than what they expected.
这个惊喜就是美光实际收入和共识指标之间的差距。
That surprise is the delta between what Micron came in and what the consensus metric was.
你在Two Sigma运行或构建这个项目的时候,会不会特别看重某些专家或某些人的意见,比其他人权重更高?
When you were running the program or building out the program at Two Sigma, would you weight certain people's, certain experts' opinions much more heavily than others?
这也是你尝试过的一个方面吗?
Was that another thing you played around with?
这是每个人进入alpha capture时都会有的想法,他们相信自己能找出最优秀的人并给予高权重,同时找出那些表现较差的,对吧?
It's the one thing everyone comes into alpha capture with the idea that they believe they're going to figure out how to find the best people and weight them heavily and find the, you know, the lesser, right?
然后给这些人较低的权重。
The laggards and weight them less.
但这种方法有个问题,而且这真的是一个大家没意识到的实际问题,那就是要在很长一段时间内持续表现出色是非常困难的。
The problem with that approach, and this is, you know, this is again, a real issue that people don't realize is that it is very tough to be consistently good across a long period of time.
很多时候,你会遇到手气正旺的情况,但随后会发生一种叫做均值回归的现象。
Oftentimes, you end up having a hot hand, something happens to you called mean reversion.
你可能听说过均值回归。
You probably heard mean reversion.
均值回归就是当事情变得太好了,然后就会回落。
Mean reversion is when things got too good and now they're going to revert back.
所以你得小心。
So you have to be careful.
你想押注在手气正旺的人身上,觉得应该多给他们一些权重。
You want to bet on someone with a hot hand and you think you want to wait them more.
但当你刚给他们增加权重,他们很可能就会回归,就像我之前提到的看涨看跌的例子一样。
The moment that you wait them more, they're most likely going to revert very similarly to the whole bullish and bearish example I had earlier.
所以,你通常要找的其实是他们底层观点中的动量。
So the thing that you usually often look for is an actually is essentially is a momentum in their underlying view.
如果他们早早发现了一家表现很好或很差的公司,并且是第一批发现的人,那么他们的想法就有了一些动量,你或许可以跟着他们一段时间,直到市场其他人跟上。
So if they've caught on into a company that's doing really well or doing really poorly, and they're able to be one of the first to catch on, and now they have some momentum in their ideas, You may be able to follow them for a little period of time while the rest of the street catches up.
所以他们现在领先一步,正在引导大家,所有人都跟着他们走。
So they're now ahead of the curve and now they're guiding everyone and everybody's moving to them.
而且他们仍然是比较大胆的那个。
And they're still kind of the bold one.
这时候你就想跟着他们押注一段时间。
And that's when you want to kind of make a bet behind them for a little while.
一旦所有人都跟上了他们的观点,你再给他们加权重就没有意义了。
Once everybody catches up to their opinion, you you you wanna you you have no more use to weight them more than others.
这很大程度上是一种视情况而定的权重。
It's very much a situational weight.
看来在运行和构建alpha捕获程序的过程中,你学到了很多关于人们在市场中的行为方式。
It seems in running the alpha capture program and building it out, you've learned a lot about the way people behave in markets.
我想问,你学到的最重要的基本见解是什么?
I guess what are the most important fundamental insights you've learned?
我不知道能不能接着问这个问题,但你肯定是在利用这些见解进行交易。
And I don't know if I can ask this question on the back of that, but surely you trade on them.
我的意思是,如果你能理解所有这些情况,我猜那些超额收益其实就散落在各处。
I mean, if you if you if you understand all these things, I imagine it just you know, there's alpha lying around there.
超额收益到处都是。
There's alpha lying everywhere.
现实情况是,想要系统性地捕捉到这些机会,需要纪律性,也需要资金,对吧?
The reality is is to capture it in a systematic manner requires discipline, requires capital, right?
还需要你有能力、有决心去专注于这项特定的技能。
Requires the ability for you to, you know, be dedicated to that particular craft.
所以我是建议大家在主业之外,试着做点投资。
So doing it on the side, I tell people trying to be an investor on the side.
说实话,很多操作其实就跟赌博差不多。
You know, a lot of it's going to be just gambling, honestly.
很大程度上也靠运气。但如果你把这当成职业,每天醒来就是为了解决这个问题,你的工作本质上就是创造收益,并且你已经摸索出了一套靠谱的系统化策略来实现这一点。
A lot of it's going to be just sort of luck, but if this is your profession, if this is what you do waking up every day and your job is to basically generate returns and you figured out how to put together a good systematic strategy to do so.
那这就很棒了。
Okay, great.
那就更好了。
More power to you.
你应该能够每天系统地创造超额收益,希望在你的余生中都能如此。
That's you should be able to create systematic, generate systematic alpha every day, you know, hopefully for the rest of your life.
但你必须不断学习,不断创新,还要记住门槛在不断提高,对吧?
But you have to keep learning, you have to keep innovating and you have to keep remembering that the bar moves, right?
更多的信息会被公开。
More information becomes known.
环境在变,入场门槛也在变,对吧?
The context changes, the table stakes change, right?
上周或去年的入场门槛,和明年的门槛会不一样。
The table stakes of last week or last year are going to be different than the table stakes of next year.
如果你不明白市场中的门槛在不断提高,人们因为数据分析、人工智能等变得越来越聪明,你就会被甩在后面。
And if you don't understand that the stakes continuously move in the market and people become increasingly more sophisticated because of data analytics, AI, whatever it is, you're going be left behind.
而且你真的不应该停下来。
And then you really shouldn't stop.
到那个时候,你就应该停止投资了。
You should stop investing at that point in time.
这就是我跟别人说的。
And that's what I tell people.
我说,如果你觉得自己已经功成名就,创造了一些了不起的东西,现在可以坐享其成了。
I say, if you feel like you've now rested on your laurels and you've created something amazing, and now you could just sit back.
不幸的是,那可能就是你该退休的时候了。
That's unfortunately the time that you probably should just retire.
希望你已经赚够了,可以退休了,但就是这个意思,对吧?
And hopefully you've done enough well enough to retire, but that's the idea, right?
市场上有很多阿尔法机会,但现实是,你必须非常自律才能抓住它们。
There's a lot of alpha lying around, but the reality is you have to be very disciplined to collect it.
生成式AI改变了阿尔法捕获吗?
Has generative AI changed alpha capture?
我问这个问题是因为现在我们有几乎无限数量的模拟分析师。
And I asked that question with the context of now we have essentially an unlimited number of simulated analysts.
它的运作方式还是一样的吗?
Does it work in the same way?
这个问题问得非常好。
That's a very, very cool question.
我喜欢这个问题。
I like it.
我真的很喜欢。
I really like it.
现在理论上你可以有一个数字分析师,对吧?
The idea that you can now have theoretically a digital analyst, right?
基本上,你知道,一个智能到足以担任分析师的智能体,能够做出分析师能做的某些决策和判断,考虑到他们看的是什么,以及他们能接触到的数据,无论是新闻、文件、会议记录,还是因子数据等等,数字分析师理论上都能理解所有这些并做出预测。
Basically, you know, you know, an agent that is actually smart enough to be an analyst and make certain decisions and judgments that an analyst can make given, you know, what are they looking at given the data that they have access to, whether it's news, filings, transcripts, you know, factor data, whatever it is, the digital analyst is able to understand all this theoretically and make forecasts.
我觉得这可能会稍微改变游戏规则。
I think that that might change the game a little bit.
不只是稍微。
Not a little bit.
实际上,这可能会带来很大的变化,尤其是在捕捉阿尔法收益方面。
It could change it a lot actually, for alpha capture.
那会怎么改变呢?
How will it change it?
这是个好问题。
I, it's a good question.
这真的是个非常好的问题。
It's a really, really good question.
我还不确定答案是什么,但我可以给你几个假设。
I'm not sure I have the answer yet, but I will give you a couple of hypotheses.
好的。
Okay.
我会提出两个可能会发生的假设。
I'll throw out, you know, two hypotheses that will happen.
第一个是,你想想看,数字分析师需要的是已经写下来的信息。
The first one is, is that if you think about it, digital analysts, right, require information that is written down.
我们所有的信息都是被写下来或记录下来的。
We're all written down or captured.
那意味着什么呢?
What does that mean?
这意味着他们必须阅读网上的内容,并能够将其融入自己的背景中。
That means that they have to read something online and be able to put that into their context.
AI需要有上下文,并且必须将其纳入。
AI has to have context and it has to put that in.
随着AI积累越来越多的上下文,你希望它能做出更好的判断,并能做出更准确的预测。
As the AI builds in more and more context, you hope that it has better judgment and it's able to make better forecasts.
但实际上可能发生的情况,这也是我的一个假设,就是AI,除非它们在某个特定方面变得更好,否则它们可能会遭遇所谓的“上下文过载”。
But what actually can happen, and this is one of my hypothesis, is that the AIs, unless they get better in a particular way, they may actually get something called context overload.
我不知道你是否熟悉这个概念。
I don't know if you're familiar with that.
上下文过载就是当你给它们太多上下文时,它们就不太确定该依据什么做决策,结果变得更加随机。
But context overload is when you throw too much context at them and now they're not quite sure what to make a decision and now they become more random.
所以最终你可能会看到,数字分析师们在投资时产生各种幻觉,行为变得随机。
So you could end up having random digital analysts making all sorts of possible hallucinations in the way that they invest.
这是一个假设。
So that's one hypothesis.
这个假设可能是错的,但如果你使用更多的数字分析师,你会看到他们在预测股票走势和基本面方向时,行为更加随机。
It could be wrong, but you'll see more random behavior from analysts and how they forecast the direction of stocks and direction of fundamentals if you use more digital analysts.
第二种可能是,它们确实变得更聪明,判断力也更强。
Now, the second approach is that they do become smarter and they do become more judgment.
也许我们有人类在旁边,非常认真地确保所有防护措施到位,确保它们不会偏离轨道,并且真正理解自己在做什么。
And maybe we have humans sitting there and really, really making sure that all the guardrails are there and everything is, you know, they don't go off the rails and they really understand what they're doing.
好吧,那也行。
Okay, fine.
我们就假设这种情况会发生。
Let's assume that that happens.
然后所有这些分析师会变得越来越聪明。
And all these analysts become smarter and more smarter.
这些数字分析师会变得越来越聪明,因为它们是经过人类精心筛选和培养的。
These digital analysts become smarter and smarter because they've been curated by humans.
我们一直在监督它们,确保它们做出正确的决策。
We're watching them making sure that they're making the right decisions.
但问题在于,我认为到那个时候,关键就变成了:你的数字分析师拥有哪些其他数字分析师没有的独家信息?
The problem with that is, I do believe in my opinion at that point in time is that then the issue is going to come down to what proprietary information does your digital analyst have that another digital analyst doesn't have?
因为如果它们都能获取信息,并做出合理、深思熟虑且理性的判断和决策,那么最终比拼的就是那些边缘性的独家信息。
Because if the world that they can all suck in information and make judgments and decisions that are sound and thoughtful and rational, it's going to come down to the marginal proprietary information.
所以,任何信息一发布,它们就能瞬间分析完毕。
So any information release that comes out, their ability to analyze it will be instantaneous.
它们会立刻知道。
They'll know it.
它们会立刻看到。
They'll see it.
它们会立刻做出判断。
They'll make a judgment on it.
而且可能会和其他数字分析师做出的判断差不多。
And it's probably gonna be a similar judgment that other digital analysts make.
但真正有意思的是,我们如何用各种不同的方式获取专有数据,然后把这些数据喂给我们的数字分析师,同时不让其他分析师接触到这些专有数据。
But what could be very interesting is how we end up capturing proprietary data in various different ways and feed it into our digital analysts and keep that proprietary data away from other analysts.
这和第一种情况完全不同,第一种情况里随机性太大,人们不信任分析师,因为他们经常犯错。
That's a world that's very different than the first world where there's too much randomness and people don't trust the analysts because they make a lot of mistakes.
那种情况下,我们基本上都是在创造一些非常有趣的专有数据和信息的小圈子。
That's a world where we're basically all, in essence, creating very interesting pockets of proprietary data and information.
而这些背景信息就像黄金一样,实际上可能会成为未来人们交易的货币。
And that context becomes essentially like gold that actually will become potentially the future currency that people will trade by.
你给我你的背景信息,我给你我的,或者你付钱买我的背景信息,对吧。
You give me your context and I'll give you mine or you pay me for your context, Right.
因为这是非常非常强大且专有的背景信息。
Because it's really, really powerful and proprietary context.
你乐观看待人类分析师吗?
Are you bullish human analysts?
我觉得人类分析师在很长一段时间内都有他们的位置,因为我还没真正见过机器能思考。
I think that human analysts have a place for a long time because I haven't really seen machines truly think.
也许我,再次,我要冒险说一句,我知道大家都在谈论总有一天会有通用人工智能之类的,但实际上我今天看到的大多数情况,并不是说它们不好。
And maybe I, again, I'm going to be, I'm going to go on a limb and I say, I know everybody talks about at some point they will be able to, there'll be AGI or something, but really most of what I see today, it's not that they're bad.
只是它们并不真正思考,它们擅长的是基于非常强大的数据库和预测引擎来预测下一步的行动、语句或代码。
It's just that they, they don't really think they're good at anticipating what the next action statement code right to right on the basis of really having a very, very powerful database and a prediction engine.
这其实挺有意思的。
It's actually interesting.
我给你举个例子。
I'll give you one example.
这是安德鲁。
This is, Andrew.
不知道你知不知道安德鲁·洛,他是我在麻省理工的一位教授。
I don't if you're familiar with Andrew Lowe is, one of my professors at MIT.
如果你查一下他,你会发现他多年来发表了很多开创性的论文,做了很多很酷的事情。
He, if you look him up, he's, you know, seminal papers on a lot of really cool things that he's done over the years.
但他有一次真的来Two Sigma给我们做了一场演讲。
But he actually came to Two Sigma one time to do a presentation to us.
他来了,那真是太棒了。
And that was really awesome, that he came by.
他说,临走前他说,我要给你们留一个东西。
And he said, look, he said at the end, before he left, he said, I'm going to leave you guys with one thing.
我要把人类智能归结为两件事。
I'm going to boil down human intelligence into two things.
大家都说,哦,真的吗?
And everyone was like, oh, really?
就这些。
That's it.
人类智能就两件事。
Two things for human intelligence.
我想,这就是我们的本质吧。
I guess that's, that's who we are.
他说人类智能就是——他用了这个词,层级记忆,我们待会儿会详细讲——还有预测。
And he said human intelligence is, and he used this word hierarchical memory, which we'll go into in a minute and prediction.
他说,层级记忆就是当你还是孩子时学到的东西,然后你又学了别的东西。
Said, hierarchical memory is the thing that you learn when you're a kid and then you learn something else.
你在此基础上继续构建。
You build on it.
这就是积木块,对吧?
It's just the building blocks, right?
你不断构建、构建、构建,然后你学到新东西。
You keep building and building and building and you learn something.
当你学到新东西时,你就把它放进记忆里。
And when you learn something, you put it into your memory.
你不需要回到最初的原则。
You don't have to go back to first principles.
你总是在之前的基础上学习。
You always learn it on the basis of something before.
所以他的意思是,让我给你举个例子。
So the idea is, he said, let me give you an example.
你半夜走在一条黑暗的小巷里。
You're walking in the middle of the night down a dark alley.
你看到前面有人穿着风衣走着。
You see someone walking in front of you with a trench coat.
你的第一反应是什么?
What's your first emotion?
害怕。
Fear.
不开心吗?
Are not happy?
害怕。
Fear.
就是这样。
There you go.
你不高兴,对吧?
You're not happy, right?
恐惧。
Fear.
然后你注意到那个人,走近一看,他戴着徽章。
And then you notice that that person, as they get closer, they have a badge.
好。
Okay.
还戴着帽子。
And they have a hat.
你觉得接下来的情绪是什么?
What's the next emotion you think is?
如释重负。
Relief.
对,没错。
Yeah, exactly.
你的身体,你,是你自己做到的。
Your body, your, you did this.
这些情绪的处理大概用了不到十秒,甚至五秒。
Those emotions were processed in probably less than what, ten seconds, five seconds.
不是因为你的身体需要回去翻遍你所有的记忆数据库,然后说,嗯,这个人穿着这个,还有那个风衣,可能是黑色的。
Not because you, her body had to go back and go through all your database of everything and say, well, this person is wearing this and they have, you know, this trench coat and maybe it's black.
机器永远也搞不明白。
Machine would have never figured it out.
层级记忆和预测对人类来说真的非常强大,显然对人类思维及其运作方式至关重要。
Hierarchical memory and prediction is human is really, really powerful for obviously the human mind and how it works.
现在我们到了一个有趣的节点,机器和人工智能已经能够模拟其中的一部分。
Now we are getting to an interesting point where machines, AI is able to simulate some of that.
我们看到了,对吧?
We're seeing it, right?
它能够处理大量信息,你可以看到它做出的决策和预测,和我们可能会做的那些预测和决策很相似。
It's able to take a lot of information and you can see that the kind of decisions and predictions that it's making are similar to what the kind of predictions and decisions that we might make.
但现在还是这样,也许未来会更好,但就目前而言,你仍然能看到它需要扫描很多可能性和选项,而人类已经建立了那种层级记忆结构,并且做了很多非常快速的迭代,能够很快地达到我告诉你的那种判断。
But it's still at a point today, and maybe in the future will be better, but at the point today where you still kind of see that it's having to scan a lot of possibilities and a lot of options, whereas humans have built that hierarchical memory structure and have done a lot of very, very quick iteration and been able to get to the kind of that judgment that I tell you about very fast.
而且我告诉你,多年来很多研究人员都试图构建这样的系统。
And that's still something that I'm telling you plenty of researchers have tried to build over the years.
我听过很多播客。
I've listened to plenty of podcasts.
我读过很多关于层级记忆的论文。
I've read plenty of hierarchical memory papers.
模拟人类的层级记忆很难。
It is hard to simulate human hierarchical memory.
非常非常难。
It's very, very difficult.
而数据库以及AI多年来积累的所有东西和上下文等等,唯一的解决办法就是投入大量的GPU。
And databases and all the things that the AIs have built over time and the context and everything like that, the only way to solve it has been just throw lots and lots and lots of GPUs at it.
有很多GPU,让计算更快,用蛮力解决。
There are lots of GPUs, make compute even faster, make it brute force.
最终,它似乎会开始模拟出类似我们的东西。
And eventually it seems like it's going to start simulating something that looks like us.
但这就是我们今天的现实情况。
But that's kind of where we are today in reality.
所以,你一开始问我的问题,可能绕了一大圈,我的回答是,是的,我仍然认为人类分析师有他们的位置和作用,因为他们拥有这种非常有用的分层记忆结构,并且能够基于此快速做出预测。
So, you asked me the question at the beginning, maybe a long way of saying is, yes, I still believe the human analysts have a place and a role because of their ability to have this very, very useful sort of hierarchical memory structure and their ability to make predictions very fast on the basis of it.
有道理。
That makes sense.
我同意。
I agree.
那数字方面呢?
What about numbers?
因为我们有很多人类分析师。
Because we have a lot of human analysts.
大家都明白,你仍然需要人。
I everyone understands that you will still need people.
我的意思是,就算是为了构建那些智能体需要调用的数据库之类的,你也需要人来干这个,还得思考在大家都在用这些新技术的情况下,我们的竞争优势是什么。
I mean, talked about even to build the, say, database or whatever it is that the agents will have to pull from, you'll need people to do that and to think about what is our competitive advantage among all the other people who are utilizing all this new technology.
所以我理解你仍然需要人。
So I understand that you will still need people.
我想听你说的是,你需要多少人?
What I want, I guess, to hear from you is how many do you need?
因为当我退一步认真想想,我觉得分析师的很多技能都是跑腿的活儿。我们真的需要那么多对冲基金吗?
Because when I take a step back and truly think, I feel like a lot of the analyst skill set is runt work, And do we need that many hedge funds?
我们需要吗?需求会扩大吗?
Do we need, does the demand expand?
我不太确定它会扩大。
I'm not exactly sure it does.
你能说说你的看法吗?
Can I get your thoughts on that?
你问了好几个问题,我想我会试着按顺序回答,实际上我会试着从后往前答。
There's a number of questions in there, and I think I'm going to try to answer them succession and actually gonna try to start backwards.
你刚才说的,提到了一个很有意思的点。
What you just said, you said an interesting point.
这有点像,顺便说一句,我之前听投资者这么说过。
It's kind of like, and this is coming from, by the way, I've heard these, I've heard investors say this before.
他们说对冲基金就像餐厅一样。
They said hedge funds are like restaurants.
就是说,你喜欢去餐厅,对吧?
I mean, you like going to a restaurant, right?
你可以在餐厅坐下来,但如果明天这家餐厅没了,你会难过吗?
You could sit down in a restaurant, but if the restaurant went away tomorrow, are you going to be sad?
有些人会。
Some people are.
也许那是你最喜欢的餐厅,但大多数人只是继续前进,去找另一家餐厅。
Maybe it was your favorite restaurant, but most people just move on and they go find another restaurant.
所以对冲基金的世界,以及整个投资管理行业,在很多人的看法里,不只是我的看法,而是我所听到的和了解的。
So the world of hedge funds and in general investment management, you know, in, in many people's opinions, it's not even just mine, but what I'm hearing and what I know about.
基本上你做的就是,你在培育那些能让市场变得更有效的参与者。
It's basically what you're doing is you're seeding participants who are going to make a market efficient.
而且市场里的参与者越多,市场就越有可能变得有效,因为毕竟不是每个人都有完全的信息。
And the more participants that are in the market, the more likely you have some efficiency because not everybody again has the perfect information.
所以他们会用不同的方式投资,互相交易。
So they're all going to kind of invest in a couple of different ways, trade against each other.
有些人可能在某些方向上犯错,另一些人在其他方向上犯错。
Some might make, you know, some mistakes in one direction, others make mistakes in other directions.
但最终你做的就是,你有足够的资本分散,让市场相对健康,这样你明天想买或卖什么,总有人愿意跟你交易。
But ultimately what you're doing is you have enough diversification of capital that the market is relatively healthy that you, if you step in tomorrow and you want to buy or sell something, there's always somebody willing to do it right with you.
想象一下,如果所有对冲基金和投资管理公司都消失了,或者变得极度集中,只剩下那些巨头,他们手里攥着几千亿、几千亿美元的资金。
Imagine a world where all the hedge funds went away and the investment management houses went away, or they became extremely concentrated and they're only stindles and the big kids, you know, all hung out there with hundreds and hundreds and hundreds of billions of dollars.
你觉得那时候市场会是什么样子?
What do you think the market will look like then?
所以好好想想吧。
So think about it.
所以这就是我想说的。
So this is what I'm saying.
所以市场集中并不是好事。
So concentration in a market is not great.
竞争是好事。
Competition is good.
这和餐馆的道理是一样的。
And it's the same idea with like restaurants.
所以,也许你并不为那家餐馆离开而难过,但你挺喜欢这条街上有很多餐馆这个想法,因为如果没有的话,就只剩两家餐馆了。
So maybe, maybe you're not sad that the restaurant left, but you kind of like the idea that there's a lot of restaurants on the block because if there weren't, there's only two restaurants.
那就不太好了。
It wouldn't be too cool.
你周六晚上出去,感觉不会太好。
You're going out on a Saturday night, you don't feel great about it.
你会想,好吧,大家都去同样的餐馆。
You're like, well, everybody's going to the same restaurants.
那里很拥挤。
It's crowded.
空气很闷。
It's stuffy.
里面臭烘烘的。
It's stinky in there.
我不喜欢。
I don't like it.
但如果这条街上有各种餐馆,我可以随便挑,气氛热闹,还有街头艺人表演,这些有趣的东西,让你感觉就像在纽约,对吧?
But if I have all the restaurants on the block and I can pick and choose and there's a lively atmosphere and there's street performers out there, all this fun stuff, you know, telling you feels like New York, right?
你会有一种感觉,就是这里充满活力,有一种真正的精神,这个区域、这个地带正在发生着一些事情。
You have this feeling of like, okay, there's a lively, you know, a true kind of a spirit, an action that's happening in this region, this zone.
金融市场给人的感觉就是这样。
And that's how the financial markets feel.
金融市场应该始终保持活跃。
The financial markets should feel always lively.
总是有交易在进行。
There's always action.
总有人愿意买,有人愿意卖,有人愿意接手别人不愿意做的交易。
There's always somebody willing to buy someone willing to sell someone willing to step in, take the trade that somebody else is not willing to do.
有人愿意做多,有人愿意做空。
Someone willing to take the over someone willing to do the under.
这就是为什么我认为你需要一个持续健康的生态系统,这是它的美妙之处。
That is the beauty of why I think you need to have a constant healthy ecosystem.
你应该总是这样想:每当你看到一个新的对冲基金成立,不要想‘天哪,又一个对冲基金’,而是想‘又多了一个市场参与者’。
And you should always consider that anytime you see a new hedge fund form, instead of saying the idea of like, Oh God, yet another hedge fund actually think to yourself, Another market participant.
你觉得五年后对冲基金行业会是什么样子?
What do you think the hedge fund world looks like in five years?
我不确定会和现在有多大不同。
I'm not sure it's that much different than it is today.
我觉得现在有很多因素让成立对冲基金变得非常容易。
I think that there's a number of things that are happening that are making it really easy to have a hedge fund.
我想说的是这个。
I guess what I would say is this.
我看到的是对冲基金越来越多,而不是越来越少。
I see more hedge funds, not less.
为什么?
And why?
因为成立对冲基金的门槛正在快速降低,对吧?
Because the barriers to entry to build a hedge fund are falling pretty fast, right?
你知道,门槛包括你得有一套自己觉得靠谱的策略,可能还需要几个数字助手帮你搭建起来。
You know, the barrier to entry involves obviously being able to have some kind of a process that you are comfortable with, maybe with a couple of digital agents that help you build that out.
你当然需要一定的资金去投资,替你的投资者赚钱。
You obviously need a certain amount of capital to be able to invest, to make it on your behalf of your investors.
然后,你还需要满足一些监管要求,而现在很多合规引擎都是自动化的。
And then, obviously, you need to meet some regulatory standards, which a lot of compliance engines now are all automated.
所以它们实际上降低了向监管机构做报告和分析的成本。
So they're actually reducing the cost of being able to do reporting and analytics to the regulators.
所以如果你把这些都考虑进去,实际上意味着对冲基金的数量可能会增加,而不是减少。
So if you think about all that, it would actually suggest that there is a likelihood that more hedge funds will actually form not fewer hedge funds.
而且会有更多的人有机会参与到这个领域中来。
And that there will be the opportunity for a lot more people to be participating in that world.
我确实觉得我可能是错的,但我愿意大胆预测一下,今天和五年后的对冲基金数量相比,如果数量翻了十倍,我也不会感到惊讶。
I actually believe I could be wrong, but I would go out on a limb and saying that to count the number of hedge funds you have today and in five years, I wouldn't be surprised if you have 10 times the number.
十倍?
10 times?
十倍的数量。
10 times the number.
好的,你是在Odds On Open节目上第一次听到这个观点的。
Well, you heard it here on Odds On Open first.
这就是一个数量激增的游戏。
It's a proliferation game.
我觉得人们会找到各种机会的缝隙。
I think it's going to be, people are going to find pockets of opportunities.
你还没算上固定收益领域可能涌现的对冲基金数量呢。
You haven't even looked at the number of hedge funds that could form out of the fixed income world.
那个领域现在真的很冷清,真正在玩的对冲基金玩家少之又少。
That's a really dark place right now with a lot of very, very few real players on the hedge fund space.
想想看,有多少对冲基金可能去做大宗商品交易。
Think about the number of hedge funds that could be doing commodity trading.
再看看私募投资,真正让私募投资变得更透明、更透明、更多AI、更多新东西融入进来。
Think about private investing and really making private investing more transparent, more transparency, more AI, more things come into it.
AI也可能让事情变得更透明,因为它让数据更容易获取,从而更透明。
AI makes things also potentially more transparent if it's making data more transparent because it's easy to access it.
突然间,人们开始交易私募公司,私募公司交易所应运而生,比如二级市场,然后对冲基金也开始在二级市场交易。
All of a sudden people are trading private companies, private company exchanges come along like secondary markets, all of a sudden trade hedge funds are trading secondary markets.
所以这肯定会发生,因为会有更多资产类别的机会。
So it's going to happen because there's going be more asset class opportunities.
更多流动性会涌入那些历来对冲基金很少涉足的资产类别。
More liquidity is going to come into asset classes that historically have not been frequented by hedge funds.
而且在我看来,建立和管理对冲基金的门槛会降低。
And the barriers again to entry to building and managing a hedge fund, in my opinion, are going to go down.
这只能说明会有更多机会和渠道向人们敞开。
That only tells me that there's going be more access to people and opportunities for people.
婴儿潮一代的人,你知道,我觉得他们最后都会变成那种在自家衣柜里做交易的人。
The baby boomers are all going to be, you know, I feel like they're all going be trunk closet traders anyway.
他们现在都在退休,而且正在交接财富——顺便说一句,这是另一个你应该注意的有趣现象。
They're all retiring now and they're handing and by the way, that's another interesting thing you should be aware.
你可能知道,我们正经历着有史以来最大规模的财富转移之一,婴儿潮一代把财富直接传给他们的子女和孙辈。
You probably know, we're dealing with one of the biggest wealth transfers, one of the largest ever wealth transfers that's happening for baby boomers right to their kids and their grandkids.
而且,你知道,这已经在发生了,但未来十年到二十年会加速进行。
And then, you know, that's already actively happening, but it's happening right over the next decade or two.
光是这一点就会推动人们产生更多投资的需求。
And that alone is going to drive opportunities for people to want to make more investments.
那他们会把钱投到哪里呢?
Well, where are they going to invest their money?
他们会把钱投到标普500那些指数基金里吗?当然会,但那太无聊了。
Are they going to invest their money in a, you know, I mean, yes, S and P and all that indexes, but that's boring.
人们更想投资那些刚创办对冲基金的朋友,因为他们觉得这些朋友很聪明,能做出些酷炫的事情。
People want to invest in their friends who just started a hedge fund because they think that they're really smart and they could do something cool.
这种情况肯定会发生。
That's going to happen.
所以,我就说到这儿吧,但这是我的看法。
So anyway, I'll stop there, but that's my belief.
那这些情况你都亲眼见过吗?
And are you seeing all these things firsthand?
因为你服务了很多对冲基金,有顶级的、大型的,也有小型的。
Because you service plenty of hedge funds, top hedge funds, large hedge funds, small hedge funds.
我想知道你的客户们对此怎么看,他们对新技术感到兴奋吗?实施的速度是不是在加快?
I guess what your clients tend to say about this, are they excited about all the new tech, and is the rate of implementation just speeding up?
你在第一线看到了什么?
What are you seeing on the front lines?
是的,我们今年看到,和所有人一样,数据获取和分析能力出现了巨大的加速,速度简直前所未有,对吧?
Well, we're seeing a massive this year, a massive acceleration like everyone else in the ability to access data and analyze it, literally at, you know, at speeds that are unheard of, Right?
过去,要扎实、数学上严谨地获取和分析数据,通常需要花很多时间。
The analyzing data and and and and actually accessing and analyzing data in a very robust, mathematically sound way, historically, it's taken time.
你得确保数据是干净的,还要确保分析质量高。
You have to make sure that the data is clean and to make sure that there's obviously that the analysis is high quality.
你得确保没有数学错误,人们称之为数据清洁度,但之后他们还得深入进行所谓的验证,数据验证,要非常深入地验证,确保数据不仅正确,而且背后的数学运算确实生成了正确的数据。
You have to make sure that all the mathematical mistakes, people call it sort of data cleanliness, but then they have to actually look at you know, what they call validation, you know, data validation, and they have to go into the validation very deeply and understand that the data is actually not just correct, but the math math behind it is actually generating the right data.
可能会有很多数值上的不准确,这会导致你做出错误的数值预测。
You can have a lot of numerical inaccuracies, which will cause you to make numerical forecasts that are incorrect.
所有这些事情,过去要花几天甚至几周的时间,才能得出一个真正有用的、强有力的见解。
All those things used to take days and weeks to make, to actually generate a strong, like a really useful insight.
而现在,几个小时就能完成,对吧?
And now it's happening in hours, right?
你打开Claude,把想法扔进去,或者用一些健壮的代码和防护措施,随便哪个想法,都能快速处理。
You pop open Claude and you just throw into it or tragedy fatigue, but certainly, you know, thrown, any one of these, you know, ideas that you have with some robust piece of code and guardrails around it.
这个东西就能帮你生成数据、做验证,然后把数据给你。
And this thing's going to be able to generate, do the validation and get you the data.
所以你说到数字运算,数字分析师和AI在数字运算方面确实非常擅长,尤其是你给它们设定了明确的规则之后。
So to your point around number crunching, digital analysts and AIs are really, really good at number crunching, especially given the guardrails that you can give to them.
如果你只是让它们随便编点什么,它们可能会产生幻觉,但如果你能引导它们去关注数学本身,就像给马戴上眼罩一样,让它们专注向前看,它们就非常擅长。
They're not great at number crunching if you just ask them to come up with something that's hallucinations, but they're really good if you're able to point them to the math and say, like a horse with blinders, keep your keep your, your eyes forward, Look at and look ahead.
只要专注于数学,它们就能像闪电一样快速处理。
Just focus on the math, and they can run through it like lightning.
而且能很快完成大量分析。
And do a lot of analysis very fast.
所以这让大家能够轻松获得大量分析结果,这是他们以前想都不敢想的。
So that is driving the ability for people to have access to a lot of analytics at their fingertips that they never thought that they would have.
但现在的问题是,你有了这么多分析结果,我给了你成千上万的分析数据。
The problem is now you have all these analytics, and I've showered you with thousands and thousands of analytics.
接下来你需要做什么呢?
What's the next thing that you need to do?
做决定?
Make a decision?
你需要所有这些分析做什么?
Why do you need all this analysis?
你打算拿它来干什么?
What are you gonna do with it?
这就回到了我刚才说的另一个词,判断力。
And that comes back to another word I just said, it's judgment.
所以突然间,谁来做出判断?
So all of a sudden, who's going to make the judgment?
是那些生成所有这些分析的AI吗?
The AIs that just generated all those analytics?
也许吧,也许其中一些会。
Maybe, maybe some of them will.
也许你可以有一个超级代理,对其他代理做出判断。
Maybe you can have a super agent that makes judgments on the others.
但实际情况是,在所有这种情况下,我们又回到了之前提到的那个点,也就是量化分析师几十年前就明白的道理:即使机器在跑所有数据,你仍然需要人类来做判断。
But the reality is in all these situations, we're coming back to the same thing that we mentioned earlier, which is something that Quants learned decades ago, is that you still need humans for the judgment, even if the machines are running all the numbers.
你觉得生成式AI会让市场更有效率还是更没效率?
Do you think Gen AI leads to more efficiency or more inefficiency in markets?
我觉得这跟你问的关于对冲基金数量多少的问题类似。
I think it's a similar question to your question on more or less hedge funds.
这里有一个推论,跟你说的那个话题是平行的。
There's there's a corollary here, a parallel to what you're talking about.
生成式AI能让你更快地分析信息。
Gen AI allows you to analyze information more quickly.
这点我们知道。
We know that.
你能快速获取信息。
You're able to get the information quickly.
你能接触到这些信息。
You're able to make access to that.
那会带来什么影响?
What does that do?
这样更多人就能接触到这些信息,理论上也能做出决策。
That allows more people to get access to that information and theoretically make decisions.
但问题是,如果大家都基于同样的信息做决策,那我唯一能依靠的就是我对信息的解读和别人不一样,因为我对这些信息的意义有不同的判断。
Now, the problem is if I make decisions on the same information that everybody else makes decisions on, the only thing I can rely on is that I'm going to interpret that information differently than they have because I have a different set of judgments about what that information means.
这就又回到了经验和市场理解上。
And that's where it comes back down to experience, understanding of the markets.
不同的人显然有不同的经验背景,来自不同的地方,投资过不同的领域,甚至家庭背景和成长经历也会影响他们对投资方向的判断。
Different people have different, obviously, experience sets where they come from, where they invested in, Even what their family backgrounds are and how, how diff you know, how they grew up will also cast those judgments on whether they decide to invest in one way or another.
所以,当观点多样化时,市场其实并不是很有效,对吧?
So when you have a diversity of opinion, you actually don't have a very efficient market, right?
如果所有人观点一致,都知道一旦处理完这条信息,答案就是这个。
If everybody had the same opinion and they all knew that once I process this piece of information, this is the answer.
而且每个人都在三十秒内得出同样的答案。
And everybody comes to the answer within thirty seconds.
这就是有效市场假说,对吧?
That's the efficient market hypothesis, right?
信息直接反映到价格上。
That gets you to information gets you to price.
所有人都对价格达成一致。
Everybody agrees on the price.
砰。
Boom.
价格就移动到它该在的位置。
The price moves to where it's supposed to be.
然后事情就结束了。
And now we're done.
但如果人们对信息的含义有不同的看法,他们都能快速处理,但对信息的判断各不相同。
But if people have different variable opinions on what the information means, they can all process it fast, but they all have different judgment calls on the information.
价格上仍然会有很多噪音,对吧,很多噪音。
You will still have, right, a lot of noise and a lot of noise that happens in the prices.
而且我觉得最终还是会这样。
And I think that that's still ultimately what will happen.
实际上,可能比现在还要更嘈杂。
And in fact, it might even be more noisy than what it is today.
这其实挺有意思的。
It's actually interesting.
大家以前总觉得,如果所有量化模型都以同样的方式运作,那我们就真的不需要人类交易员了。
Everybody always thought if all the quant models were all working the same way, we would have really no reason to have any more human traders.
但过去二十年发生的情况恰恰相反。
And the opposite has happened over the last two decades.
顺便说一句,这在我还在Two Sigma的时候也让我很惊讶。
And that's something, by the way, that surprised me when I was Two Sigma.
我以前总觉得未来的趋势是,我们都在朝着某种奇点迈进。
I always thought that the the wave of the future is, we're all just moving toward singularity or something.
但现实是,现在市场里的混乱程度比以前更高了。
But the reality is there's even more entropy now in the markets than before.
我觉得这是因为获取信息和分析变得太容易了,所以现在有更多人在做判断。
And I think it's because access to information and analysis has become so easy that more people are now making judgements.
散户在做判断,理财顾问也在做判断。
Retails making judgements, financial advisors making judgements.
所有人都在根据自己的想法决定买什么、卖什么。
All people are making judgements on what they want to buy and what to sell.
这实际上造成的混乱比人们预想的还要多。
And that's actually creating even more entropy than what people realized would happen.
我觉得用熵来打比方很有意思。
I think using entropy as an analogy is fascinating.
说到这个,Omer,你职业生涯中有很大一部分时间都在做这个。
And on that, Omer, you spent a good chunk of your career.
我称之为把人类行为映射并汇总成洞察,供顶级对冲基金交易使用。
I call it mapping and aggregating human behavior into insight for one of the best hedge funds to trade on.
你觉得所有新的生成式AI工具会不会让某些行为偏差变得更明显?
Are there any behavioral biases you think will accentuated because of all the new Gen AI tools?
我仍然认为,只要人类需要做决定,不管生成式AI工具多好。
I still think that if humans have to make decisions, no matter how good the Gen AI tools are.
不管生成式AI工具多厉害,能在信息出来三毫秒内就把你想要的分析送到你手边。
And no matter how great the Gen AI tools are going to give you the analysis that you've wanted at your fingertips within, you know, three milliseconds of the information coming out.
如果你还是得做出判断,市场里就两样东西说了算:恐惧和贪婪。
If you somehow have to make some judgment call, two things are going to rule in the markets, fear and greed.
就这些。
That's it.
它们从人类存在起就有了。
They've been around as long as humans have been around.
只要市场还在,只要人类还在对市场做判断,这两样东西就一定会一直在,作为主导情绪决策的力量。
And as long as markets will be around, as long as humans will be making judgment calls on markets, you get the guarantee that those are the two things that are going to always be there as reigning emotional decisions.
不幸的是,我们就是这样的人。
That's unfortunately the animals that we are.
不管你想多理性,投资者最终都会这样。
No matter how rational you want to be, that ends up what ends up happening to investors.
最后一个问题。
Final question.
假设现在有一位对冲基金经理正在看这个播客,你看到我们说的所有内容,生成式AI会改变很多,但也不会从根本上改变我们作为生物的本质。
Let's say there's a hedge fund manager watching this podcast right now, and you're seeing everything we're saying, gen AI is gonna change a lot, but it's also not gonna change fundamentally what we are as creatures.
他问你,他说,Omer,你见过各种各样的对冲基金经理,你通过Omega Point为他们服务,人们犯的头号错误是什么?
And he asks you, he says, Omer, you've seen all sorts of different hedge fund managers, you service them through Omega Point, what is the number one mistake people make?
我需要停止做的一件事是什么?你看到那些年复一年表现优异的客户,那些表现好的,他们都有什么共同点?
What is the one thing I need to stop doing that you see your clients who perform year after year after year, the ones that perform, what's something they all do?
这是个好问题。
It's a great question.
这确实是个好问题,要把它归结为一件事。
That's actually a great question to boil it down to one thing.
所有成熟的对冲基金经理在他们的投资流程中都会做的一件事是什么?我觉得他们能经常指出这一点,但仍然不去纠正它。
What is the one thing that all sophisticated hedge fund managers do in their investment process, I would say that they can point to regularly and yet still don't correct it.
对吧?
Okay?
而且我觉得这取决于对冲基金经理和他们的策略,但咱们还是想想人吧。
And again, I think that it depends on the hedge fund manager and their strategy, but let's think about human.
咱们还是聚焦在人身上,而不是那些只做系统化模型的。
Let's stay on the human, not the ones that are just building only systematic models.
我觉得在那些非常聪明、超级聪明的基金经理身上,你经常能看到两种行为偏差。
I think that there's really two pieces of behavioral bias that you see regularly in this in essentially very, very intelligent and super smart human managers.
第一种,我称之为“起步时的保守”。
The first one is what I'm going to call conservatism out of the gate.
他们有了一个想法。
They have an idea.
他们做了研究。
They've done the research.
他们做了分析。
They've done the analysis.
他们真的很了解这只股票。
They really know the stock.
他们真的很了解这家公司。
They really know the company.
但结果他们只投了1%或2%的仓位。
But yet they only put a 1% or 2% position down.
为什么?
Why?
为什么不投4%?
Why not a 4%?
为什么不投5%的仓位?
Why not a 5% position?
如果你这么了解,那好吧,咱们保守一点。
If you know it so well, well, let's be conservative.
先看看情况再说。
Let's see how this plays out.
这不是在Robinhood上赌博下注。
This is not, you know, we're not betting and gambling on Robinhood here.
我们是在认真思考。
We're being thoughtful.
我们是自己资本的管理者,也是投资者资本的管理者。
We were stewards of our capital, of the capital of our investors.
我们想做出好的决策。
We want to make good decisions.
让我们认真对待这件事。
Let's be thoughtful about it.
结果发现,很多超额收益其实在最初那个保守阶段就流失了。
It turns out that a lot of the alpha is actually lost in that initial stage of being conservative.
所以,当你是一个非常聪明、有才华且自律的机构投资者时,偏见并不一定是过度自信。
So the bias is not to be overconfident necessarily when you're a really smart and talented and disciplined institutional investor.
偏见往往在相反的一面,就是过于保守,没有在初期就抓住一定量的超额收益。
The bias is oftentimes on the opposite side to be too conservative and not capture a certain amount of alpha upfront.
而这最终实际上有时会成为区别所在——比如一个经理每年赚5%到6%,而另一个经理每年赚10%到11%。
And that ultimately ends up actually being sometimes the difference between we're talking a manager earning, call it five to 6% a year and a manager earning 10 to 11% a year.
这些偏见有时候影响就这么大。
That's how big those biases can sometimes be.
而且他们自己也知道。
And they know it.
你要是跟他们聊,他们会告诉你,我们知道自己有这种偏见,这种保守的倾向,但我们不得不这么做。
They'll tell you, if you talk to them, they'll tell you, we know that we have that bias, that conservatism bias, but we have to act that way.
这是天生的。
It's innate.
就像我们建仓的时候必须保持纪律性。
Like we have to be disciplined about how we put our positions into the market.
我们不能一下子全押进去,这确实没错,但相对于超额收益来说,你还是太保守了,数据会一次又一次地证明这一点,你还是太保守了,可你依然会犯同样的错误。
We can't just go all in, which is true, but you're still too conservative relative to the alpha and the data will disprove you again and again, that you're still being too conservative and yet you still make the same mistake.
我很喜欢。
I love it.
非常感谢你来上我们的播客。
Thank you so much for coming on the pod.
这真是太棒了,Omer。
This was wonderful, Omer.
非常感谢你,Ethan。
Really appreciate it, Ethan.
祝你今天剩下的时间愉快。
Have a good rest of your day.
我们很快再聊。
We'll talk soon.
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