真正重要的是什么?
Memo to:
Memo to:
Oaktree Clients
Oaktree Clients
From:
From:
Howard Marks
Howard Marks
Re:
Re:
真正重要的是什么?
What Really Matters?
我从今年写的几篇备忘录里挑了些想法,再加上最近的一些思考和对话,凑成了这篇备忘录的主题:什么对投资者来说真正重要,或者应该重要。我先从一些我认为不重要的事情说起。
什么不重要:短期事件
在《知识的幻觉》(2022 年 9 月)里,我痛批了宏观预测,在我们这一行,宏观预测主要关心的是接下来一两年的事。在《恕难苟同》(2022 年 7 月)里,我谈到了 6 月 21 日橡树伦敦会议上被问得最多的问题:通胀会多糟?美联储会加息多少来对抗通胀?这些加息会不会引发衰退?衰退有多深、持续多久?我告诉与会者,关键在于,这些事全都关乎短期,而我对短期的了解就是下面这些:
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I’ve gathered a few ideas from several of my memos this year – plus some recent musings and conversations – to form the subject of this memo: what really matters or should matter for investors. I’ll start by examining a number of things that I think don’t matter. What Doesn’t Matter: Short-Term Events In The Illusion of Knowledge (September 2022), I railed against macro forecasting, which in our profession mostly concerns the next year or two. And in I Beg to Differ (July 2022), I discussed the questions I was asked most frequently at Oaktree’s June 21 conference in London: How bad will inflation get? How much will the Fed raise interest rates to fight it? Will those increases cause a recession? How bad and for how long? The bottom line, I told the attendees, was that these things all relate to the short term, and this is what I know about the short term: • • • • •
大多数投资者都做不好这类短期现象的预测。
所以,他们不该太把关于这些话题的看法当回事(不管是自己的还是别人的)。
他们不太可能因为这些看法而对投资组合做大的调整。
就算做了调整,也难保每次都做对。
所以,这些都不是要紧的事。
Most investors can’t do a superior job of predicting short-term phenomena like these. Thus, they shouldn’t put much stock in opinions on these subjects (theirs or those of others). They’re unlikely to make major changes in their portfolios in response to these opinions. The changes they do make are unlikely to be consistently right. Thus, these aren’t the things that matter.
举个例子。2007 年第三季度,为应对全球金融危机的初次震颤,美联储开始下调联邦基金利率,到 2008 年底前后降至零,并在此水平上维持了七年。2015 年末,我几乎只被问到一个问题:“第一次加息什么时候来?”我的回答始终如一:“你们何必在意?如果我说‘2 月’,你们会怎么做?如果我改口说‘5 月’,你们的做法又会有什么不同?要是大家都知道利率马上要涨,从哪个月开始又有什么区别?”从来没有人给出过令人信服的答案。投资者或许觉得,问这类问题是一种专业的表现,但我怀疑他们自己也说不清为什么。
绝大多数投资者无法确知未来会有什么宏观事件,也难以预料市场对已发生之事作何反应。在《知识的错觉》一书中,我曾大篇幅论述不可预见的事件如何把经济与市场预测搅得一塌糊涂。简而言之,大多数预测就是外推,而大多数时候局面并未改变,所以外推通常是对的,但也谈不上有多少赚头。另一方面,对偏离趋势的准确预测可能获利丰厚,但这类预测既难做出又难依其行动。这些正是多数人无法把未来看得足够清楚、从而持续取得超额表现的部分原因。
这件事为何如此之难?难道我们大多数人不知道哪些事件可能发生吗?难道我们不能直接买入那些最可能因这些事件受益的公司的证券吗?长远来看也许可以,但我想谈谈布鲁斯·卡什近来反复强调的一个主题,它涉及短线思路难以赚钱的一大主因:很难弄清市场对事件的预期,哪些已经反映在证券价格之中了。
Consider an example. In response to the first tremors of the Global Financial Crisis, the Federal Reserve began to cut the fed funds rate in 3Q2007. They then lowered it to zero around the end of 2008 and left it there for seven years. In late 2015, virtually the only question I got was “When will the first rate increase occur?” My answer was always the same: “Why do you care? If I say ‘February,’ what will you do? And if I later change my mind and say ‘May,’ what will you do differently? If everyone knows rates are about to rise, what difference does it make which month the process starts?” No one ever offered a convincing answer. Investors probably think asking such questions is part of behaving professionally, but I doubt they could explain why. The vast majority of investors can’t know for sure what macro events lie just ahead or how the markets will react to the things that do happen. In The Illusion of Knowledge, I wrote at length about the way unforeseen events make a hash of economic and market forecasts. In summary, most forecasts are extrapolations, and most of the time things don’t change, so extrapolations are usually correct, but not particularly profitable. On the other hand, accurate forecasts of deviations from trend can be very profitable, but they’re hard to make and hard to act on. These are some of the reasons why most people can’t predict the future well enough to repeatably produce superior performance. Why is doing this so hard? Don’t most of us know what events are likely to transpire? Can’t we just buy the securities of the companies that are most likely to benefit from those events? In the long run, maybe, but I want to turn to a theme that Bruce Karsh has been emphasizing lately, regarding a major reason why it’s particularly challenging to profit from a short-term focus: It’s very difficult to know which expectations regarding events are already incorporated in security prices.
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人们常犯的一个严重错误——我们在媒体上屡见不鲜——就是认为证券价格的变动是事件的结果:利好事件导致价格上涨,利空事件导致价格下跌。我想这是大多数人的看法,尤其是一维思考者,但事实并非如此。证券价格由事件以及投资者对这些事件的反应共同决定,而反应在很大程度上取决于事件与投资者预期的对比情况。
怎么解释一家公司报告盈利增长,股价反而下跌?答案当然在于,报告的增长未达预期,因而让投资者失望。所以,在最基本的层面上,关键不在于事件本身是否正面,而在于事件与预期相比如何。
我职业生涯早期,每天会花几分钟翻阅《华尔街日报》上的盈利报告。但过了一阵子,我恍然大悟:既然我不知道市场预期的数字是多少,那么一家我并未跟踪的公司发布公告,我根本无从判断它是好消息还是坏消息。
投资者可以对少数几家公司及其证券做到精通,但没有人能对宏观事件有足够了解,从而(a)理解支撑证券价格的宏观预期,(b)预判整体事件走向,(c)预测这些证券会如何反应。潜在买家该去哪里寻找答案,看看那些设定证券价格的投资者在通胀、GDP 或失业率方面已经预期了什么?有时可以从资产价格中推断出预期,但推断出的水平往往在实际数据公布后并不被证明是对的。
再者,短期内证券价格极易受到随机和外部事件的冲击,这些冲击可能盖过基本面事件的影响。宏观事件以及公司近期命运的起落无法预测,也不一定能反映或关系到公司的长期前景。所以,对它们只需给予很少的关注。例如,公司常常刻意通过投资未来业务来压低当期盈利;因此,低的报告盈利可能意味着未来盈利高,而不是持续低迷。要分辨其中的差别,你必须对公司有深入的了解。
任何人都不该误以为证券定价是一个可靠的流程,能准确遵循一套规则。事件无法预测;它们会被不可预知的影响因素改变;投资者对已发生事件的反应也无法预测。正因为存在如此多的不确定性,大多数投资者靠关注短期无法改善自己的业绩。
从观察中可以清楚看到,证券价格的波动远大于经济产出或公司利润的波动。原因何在?必然是短期内价格的起落更多受投资者心理波动的影响,而非公司长期前景的变化。因为心理波动在近期内比基本面变化影响更大,又极难预测,所以大多数短线交易都是浪费时间……甚至更糟。
无关紧要的事:交易心态
多年来,我的备忘录里经常引用我父亲上世纪 50 年代讲的一些笑话,因为
One of the critical mistakes people are guilty of – we see it all the time in the media – is believing that changes in security prices are the result of events: that favorable events lead to rising prices and negative events lead to falling prices. I think that’s what most people believe – especially first-level thinkers – but that’s not right. Security prices are determined by events and how investors react to those events, which is largely a function of how the events stack up against investors’ expectations. How can we explain the company that reports higher earnings, only to see its stock price drop? The answer, of course, is that the reported improvement fell short of expectations and thus disappointed investors. So, at the most elementary level, it’s not whether the event is simply positive or not, but how the event compares with what was expected. In my earliest working years, I used to spend a few minutes each day looking over the earnings reports printed in The Wall Street Journal. But after a while, it dawned on me that since I didn’t know what numbers had been expected, I had no idea whether an announcement from a company I didn’t follow was good news or bad. Investors can become expert regarding a few companies and their securities, but no one is likely to know enough about macro events to (a) be able to understand the macro expectations that underlie the prices of securities, (b) anticipate the broad events, and (c) predict how those securities will react. Where can a prospective buyer look to find out what the investors who set securities prices already anticipate in terms of inflation, GDP, or unemployment? Inferences regarding expectations can sometimes be drawn from asset prices, but the inferred levels often aren’t proved correct when the actual results come in. Further, in the short term, security prices are highly susceptible to random and exogenous events that can swamp the impact of fundamental events. Macro events and the ups and downs of companies’ nearterm fortunes are unpredictable and not necessarily indicative of – or relevant to – companies’ long-term prospects. So little attention should be paid to them. For example, companies often deliberately reduce current earnings by investing in the future of their businesses; thus, low reported earnings can imply high future earnings, not continued low earnings. To know the difference, you have to have an in-depth understanding of the company. No one should be fooled into thinking security pricing is a dependable process that accurately follows a set of rules. Events are unpredictable; they can be altered by unpredictable influences; and investors’ reactions to the events that occur are unpredictable. Due to the presence of so much uncertainty, most investors are unable to improve their results by focusing on the short term. It’s clear from observation that security prices fluctuate much more than economic output or company profits. What accounts for this? It must be the fact that, in the short term, the ups and downs of prices are influenced far more by swings in investor psychology than by changes in companies’ long-term prospects. Because swings in psychology matter more in the near term than changes in fundamentals – and are so hard to predict – most short-term trading is a waste of time . . . or worse. What Doesn’t Matter: The Trading Mentality Over the years, my memos have often included some of my father’s jokes from the 1950s, based on my strong belief that humor often reflects truths about the human condition. Given its relevance here, I’m going to devote a bit of space to a joke I’ve shared before:
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两个朋友在街上相遇,乔问萨姆有什么新鲜事。“哦,”他回答,“我刚弄到一箱上好的沙丁鱼。”
乔:
Two friends meet in the street, and Joe asks Sam what’s new. “Oh,” he replies, “I just got a case of great sardines.” Joe:
太好了,我喜欢沙丁鱼。给我来一些,多少钱?
Great, I love sardines. I’ll take some. How much are they?
Sam:
Sam:
$10,000 a tin.
$10,000 a tin.
Joe:
Joe:
什么!一罐沙丁鱼怎么能卖到 1 万美元?
What! How can a tin of sardines cost $10,000?
Sam:
Sam:
这些是世界上最顶级的沙丁鱼。每一条都是血统纯正、证书齐全的纯种货。它们是用网捕而非钩钓的;手工去骨;浸泡在最上等的特级初榨橄榄油中。而且标签出自著名艺术家之手。一万美金一条,简直是捡了个大便宜。
These are the greatest sardines in the world. Each one is a pedigreed purebred, with papers. They were caught by net, not hook; deboned by hand; and packed in the finest extra-virgin olive oil. And the label was painted by a well-known artist. They’re a bargain at $10,000.
Joe:
Joe:
可谁会去吃一罐 1 万美元的沙丁鱼呢?
But who would ever eat $10,000 sardines?
Sam:
Sam:
哦,这些可不是拿来吃的沙丁鱼,是用来交易的沙丁鱼。
Oh, these aren’t eating sardines; they’re trading sardines.
我提起这个老笑话,是因为我觉得大多数人把股票和债券当成交易筹码,而不是值得拥有的东西。
如果你让沃伦·巴菲特描述他投资方法的基础,他大概会先强调一点:股票应该被看作公司的所有者权益。大多数人创办公司,目标不是短期转手卖掉,而是想经营它、享受盈利、把生意做大。当然,创始人做这些归根结底是为了赚钱,但他们多半会把钱看成经营一家成功企业的副产品。巴菲特说,买股票的人应该把自己当成合伙企业的合伙人,和对方共享目标。
但我觉得现实中很少有人这么想。大多数人买股票,目标就是高价卖出,觉得股票是用来交易的,不是用来拥有的。这意味着他们放弃了所有者心态,转而像赌徒或投机者一样,押注股价涨跌。结果往往不愉快。达尔巴研究所 2012 年的研究显示,1992 年到 2012 年间,投资者每年拿到的回报比标普 500 指数低 3 个百分点,而普通投资者的平均持股时间只有 6 个月。6 个月!当你持有一只股票不到一年,你根本没有利用股市来获取企业所有权、参与这家企业的成长。你只是在猜测短期新闻和预期,你的回报取决于别人对这些新闻信息的反应。整体来看,这种态度让你每年少赚 3 个百分点——而本来你只需要在标普 500 指数基金上做初始投资,然后什么都不用做。(《富达最优秀的投资者都是死人》,《保守型收益投资者》,2020 年 4 月 8 日)
在我看来,为了短期交易而买入,等于忘了自己支持的球队有机会夺冠,转而押注下一次进攻、这一局、这一回合谁会占上风。我们想想其中的逻辑。你买一只股票,是因为你觉得它的价值高于你得付的价格,而卖方则认为它已经充分定价。总有一天,如果一切顺利,它会变得充分定价——到那时候,
I include this old joke because I believe most people treat stocks and bonds like something to trade, not something to own. If you ask Warren Buffett to describe the foundation of his approach to investing, he’ll probably start by insisting that stocks should be thought of as ownership interests in companies. Most people don’t start companies with the goal of selling them in the short term, but rather they seek to operate them, enjoy profitability, and expand the business. Of course, founders do these things to ultimately make money, but they’re likely to view the money as the byproduct of having run a successful business. Buffett says people who buy stocks should think of themselves as partners of owners with whom they share goals. But I think that’s rarely the case. Most people buy stocks with the goal of selling them at a higher price, thinking they’re for trading, not for owning. This means they abandon the owner mentality and instead act like gamblers or speculators who bet on stock price moves. The results are often unpleasant. The DALBAR Institute 2012 study showed that investors receive three percentage points less per year than the S&P 500 generated from 1992 to 2012, and the average holding period for a typical investor is six months. Six Months!! When you hold a stock for less than a year, you are not using the stock market to acquire business ownership positions and participate in the growth of that business. Instead, you are just guessing at short-term news and expectations, and your returns are based on how other people react to that news information. In aggregate, that kind of attitude gets you three percentage points less per year than you’d get from doing nothing at all beyond making the initial investment in the index fund of the S&P 500. (“Fidelity’s Best Investors Are Dead,” The Conservative Income Investor, April 8, 2020) To me, buying for a short-term trade equates to forgetting about your sports team’s chances of winning the championship and instead betting on who’s going to succeed in the next play, period, or inning. Let’s think about the logic. You buy a stock because you think it’s worth more than you have to pay for it, whereas the seller considers it fully priced. Someday, if things go well, it’ll become fully priced, in
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你的判断是它已经到顶了,这意味着你会卖掉它。然而,接手你股票的人之所以买,是因为他觉得它还能涨得更高。我们过去常把这种过程称为依赖“博傻理论”:不管我以什么价格买入一只股票,总会有另一个人愿意以更高的价格从我手里接走,尽管我卖出的原因正是我认为它已经达到了充分估值。
每一个买家都被一种信念驱使,认为这只股票最终会比今天的价格更值钱(这种看法,卖家 presumably 并不认同)。关键问题在于,这些买入背后是哪种思考在支撑。买家买它,是因为这是一家他们愿意长期持有一部分股权的公司吗?还是仅仅在赌价格会上涨?从表面看,这些交易可能一模一样,但我琢磨的是背后的思维过程,以及逻辑是否站得住脚。
每一次股票成交,一方是错的,另一方是对的。但如果你做的事是在赌人气趋势,赌未来一个月、一个季度或一年的价格走向,那么认为自己能比交易对手方更常猜对,这现实吗?也许主动管理的衰落,可以归因于许多主动型基金经理把注押在了股价的短期方向上,而不是挑选那些他们想长期持有部分股权的公司。归根结底,全在心态。
1969 年,我在第一国民城市银行上班的头几个月,和我父亲住在一起,那时我们就这个话题进行过一场长谈。(回想那些日子,我觉得不可思议;他当时比我今天年轻得多。)我告诉他,我认为买股票的理由应该是别的什么,而不是指望价格会上涨,我提出,这个理由可能是预期股息会随着时间增加。他反驳说,没人是为了股息买股票的——他们买是因为觉得价格会涨。那又是什么触发上涨呢?
因为一家公司的商业价值和长期盈利潜力而想拥有它,这是当股东的好理由;如果这些预期得到兑现,那也有充分理由相信股价会上涨。没有这个基础,指望升值而买入,不过是试图猜测未来投资者会青睐哪些行业和公司。本·格雷厄姆有句名言:“短期来看,市场是一台投票机,但长期来看,它是一台称重机。”尽管这一切都不容易,正如查理·芒格曾对我说的那样,仔细权衡长期价值,应该比试图猜测短期人气波动带来更好的结果。
什么不重要:短期业绩
考虑到短期投资业绩的可能成因,报告出来的结果可能呈现出一幅极具误导性的图景,这里我主要说的是顺境中的超额收益。我觉得顺境中成功需要三个要素——激进、时机和技能——如果你在正确的时间足够激进,那就不需要太多技能。我们都知道,在好光景里,最高回报往往属于投资组合中承担最多风险、贝塔值和相关性的人。如果投资者是个永远看多、总是激进持仓的人,那么拥有这样的组合算不上什么卓越或洞察的标志。最后,随机事件可能对某个季度或年度的回报产生压倒性的影响——无论哪个方向。
我备忘录中反复出现的主题之一是:决策的质量不能仅凭结果来判断。即使决策经过深思熟虑、基于所有可得信息,也常常导致负面结果。另一方面,我们都认识一些人——甚至偶尔包括我们自己——他们的正确是出于错误的原因。隐藏的信息和随机的发展可能
your opinion, meaning you’ll sell it. The person you sell it to, however, will buy it because he thinks it’s worth still more. We used to talk about this process as being reliant on the Greater Fool Theory: No matter what price I pay for a stock, there will always be someone who will buy it from me for more, despite the fact that I’m selling because I’ve concluded that it has reached full value. Every buyer is motivated by the belief that the stock will eventually be worth more than today’s price (a view the seller presumably doesn’t share). The key question is what type of thinking underlies these purchases. Are the buyers buying because this is a company they’d like to own a piece of for years? Or are they merely betting that the price will go up? The transactions may look the same from the outside, but I wonder about the thought process and thus the soundness of the logic. Each time a stock is traded, one side is wrong and one is right. But if what you’re doing is betting on trends in popularity, and thus the direction of price moves over the next month, quarter, or year, is it realistic to believe you’ll be right more often than the person on the other side of the trade? Maybe the decline of active management can be attributed to the many active managers who placed bets on the direction of stock prices in the short term, instead of picking companies they wanted to own part of for years. It’s all a matter of the underlying mentality. I had a long debate on this topic with my father back in 1969, when I lived with him during my first months at First National City Bank. (It’s amazing for me to think back to those days; he was so much younger than I am today.) I told him I thought buying a stock should be motivated by something other than the hope that the price would rise, and I suggested this might be the expectation that dividends would increase over time. He countered that no one buys stocks for the dividends – they buy because they think the price will go up. But what would trigger the rise? Wanting to own a business for its commercial merit and long-term earnings potential is a good reason to be a stockholder, and if these expectations are borne out, a good reason to believe the stock price will rise. In the absence of that, buying in the hope of appreciation merely amounts to trying to guess which industries and companies investors will favor in the future. Ben Graham famously said, “In the short run, the market is a voting machine, but in the long run, it is a weighing machine.” While none of this is easy, as Charlie Munger once told me, carefully weighing long-term merit should produce better results than trying to guess at short-term swings in popularity. What Doesn’t Matter: Short-Term Performance Given the possible contributors to short-term investment performance, reported results can present a highly misleading picture, and here I’m talking mostly about superior gains in good times. I feel there are three ingredients for success during good times – aggressiveness, timing, and skill – and if you have enough aggressiveness at the right time, you don’t need that much skill. We all know that in good times, the highest returns often go to the person whose portfolio incorporates the most risk, beta, and correlation. Having such a portfolio isn’t a mark of distinction or insight if the investor is a perma-bull who’s always positioned aggressively. Finally, random events can have an overwhelming impact on returns – in either direction – in a given quarter or year. One of the recurring themes in my memos is the idea that the quality of a decision cannot be determined from the outcome alone. Decisions often lead to negative outcomes even when they’re well-reasoned and based on all the available information. On the other hand, we all know people – even occasionally ourselves – who’ve been right for the wrong reason. Hidden information and random developments can
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让最优秀的思考者也会做出错误决策。(不过,若把结果放在长时间、多次试验的维度来看,更优秀的决策者拥有更高成功比例的几率会压倒性地大。)
显然,任何人都不该对单个季度或年度的回报赋予太多意义。投资表现不过是可能实现的所有回报组合中抽出的一个结果,在短期内,它可能被随机事件严重左右。因此,一个季度的回报很可能是衡量投资者能力的非常弱的指标,甚至算不上指标。仅凭一个季度或一年的表现就判断一位经理人是否有特殊技能——或者一项资产配置是否适合长期——就像凭一次上场打击来评判一名棒球手,或凭一场比赛来评判一匹赛马。
我们知道短期表现并不重要。然而,我参加过的多数投资委员会,都会把最近一个季度的表现列在议程第一条,并在每次会议上花相当一部分时间讨论它。讨论通常很充分,但很少引发实质行动。那为什么我们还要这么做?和投资者关注预测的原因一样,正如《知识的错觉》里所描述的:“大家都这么做”,而且“不这么做会显得不负责任”。
什么不重要:波动性
关于波动性我写得不多,除了我强烈反对那些把它视为风险定义或本质的人。我讲过我的看法:上世纪 60 年代初开创芝加哥学派投资理论的那些学者,(a)想研究投资回报与风险之间的关系,(b)需要一个能放进计算里的量化风险的数字,并且(c)选择波动性作为风险的替代指标,原因很简单:那是唯一能拿到的量化指标。我把风险定义为出现糟糕结果的概率,而波动性充其量只是风险存在的一个指示器。但波动性不是风险。这个话题我就说到这儿。
我在这里想谈的是,在我入行 50 多年里,对波动性的思考和在意在多大程度上扭曲了投资世界。60 年代末,我在芝加哥大学商学院读研究生,成为最早一批学习这些新理论的学生之一,这对我是极大的优势。我学到了有效市场假说、资本资产定价模型、随机漫步、风险厌恶的重要性,以及波动性作为风险的角色。虽然我在 1969 年进入真实投资世界时,波动性还不是谈话的话题,但实践很快就赶上了理论。
特别是,夏普比率被采纳为风险调整后回报的衡量标准。它是投资组合超额回报(超出短期国债收益率的回报部分)与其波动性的比率。每单位波动性带来的回报越高,风险调整后回报就越高。风险调整是个核心概念,回报绝对应该相对于为实现它而承担的风险来评估。每个人都在引用夏普比率,包括橡树资本,因为这是这类工作中唯一可用的量化工具。(如果投资者、顾问和客户不用夏普比率,他们就完全没有指标;而如果他们试图在评估中用基本面风险来替代波动性,会发现根本没法将其量化。)夏普比率或许能在某种程度上暗示风险调整后的表现,就像波动性暗示风险一样,但既然波动性不是风险,夏普比率就是一个非常不完美的衡量标准。
举个例子,1978 年我开始涉足的一个资产类别:高收益债券。在橡树资本,我们认为,中高配以上的回报可以以大幅低于基准的风险实现,而
frustrate even the best thinkers’ decisions. (However, when outcomes are considered over a long period of time and a large number of trials, the better decision maker is overwhelmingly likely to have a higher proportion of successes.) Obviously, no one should attach much significance to returns in one quarter or year. Investment performance is simply one result drawn from the full range of returns that could have materialized, and in the short term, it can be heavily influenced by random events. Thus, a single quarter’s return is likely to be a very weak indicator of an investor’s ability, if that. Deciding whether a manager has special skill – or whether an asset allocation is appropriate for the long run – on the basis of one quarter or year is like forming an opinion of a baseball player on the basis of one trip to the plate, or of a racehorse based on one race. We know short-term performance doesn’t matter much. And yet, most of the investment committees I’ve sat on have had the latest quarter’s performance as the first item on the agenda and devoted a meaningful portion of each meeting to it. The discussion is usually extensive, but it rarely leads to significant action. So why do we keep doing it? For the same reasons investors pay attention to forecasting, as described in The Illusion of Knowledge: “everyone does it,” and “it would be irresponsible not to.” What Doesn’t Matter: Volatility I haven’t written much about volatility, other than to say I strongly disagree with people who consider it the definition or essence of risk. I’ve described my belief that the academics who developed the Chicago School theory of investment in the early 1960s (a) wanted to examine the relationship between investment returns and risk, (b) needed a number quantifying risk that they could put into their calculations, and (c) undoubtedly chose volatility as a proxy for risk for the simple reason that it was the only quantifiable metric available. I define risk as the probability of a bad outcome, and volatility is, at best, an indicator of the presence of risk. But volatility is not risk. That’s all I’m going to say on that subject. What I want to talk about here is the extent to which thinking and caring about volatility has warped the investing world over the 50-plus years that I’ve been in it. It was a great advantage for me to have attended the Graduate School of Business at the University of Chicago in the late ’60s and to have been part of one of the very first classes that was taught the new theories. I learned about the efficient market hypothesis, the capital asset pricing model, the random walk, the importance of risk aversion, and the role of volatility as risk. While volatility wasn’t a topic of conversation when I got into the real world of investing in 1969, practice soon caught up with theory. In particular, the Sharpe ratio was adopted as the measure of risk-adjusted return. It’s the ratio of a portfolio’s excess return (the part of its return that exceeds the yield on T-bills) to its volatility. The more return per unit of volatility, the higher the risk-adjusted return. Risk adjustment is an essential concept, and returns should absolutely be evaluated relative to the risk that was taken to achieve them. Everyone cites Sharpe ratios, including Oaktree, because it’s the only quantitative tool available for the job. (If investors, consultants, and clients didn’t use the Sharpe ratio, they’d have no metric at all, and if they tried to substitute fundamental riskiness for volatility in their assessments, they’d find that there’s no way to quantify it.) The Sharpe ratio may hint at risk-adjusted performance in the same way that volatility hints at risk, but since volatility isn’t risk, the Sharpe ratio is a very imperfect measure. Take, for example, one of the asset classes I started working with in 1978: high yield bonds. At Oaktree, we think moderately-above-benchmark returns can be produced with substantially less risk than the
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基准比较,这体现在更高的夏普比率上。但高收益债券中真正的风险——我们关注且历来致力于降低的风险——是违约风险。我们并不太在意降低波动性,也不会刻意为之。我们相信,较高的夏普比率可能源于——也许与——我们为降低违约所采取的行动相关。
在固定收益或“信用”领域,波动性尤其无关紧要。债券、票据和贷款代表定期付息和到期偿还本金的合同承诺。大多数时候,当你买入收益率 8% 的债券,基本会在其存续期内获得 8% 的收益率,无论期间债券价格涨跌。我说“基本”,因为如果价格下跌,你会有机会将利息收入以高于 8% 的收益率再投资,所以你的持有期回报会逐步抬升。因此,许多人深恶痛绝的下行价格波动实际上是好事——只要它不预示违约。(注意,如本段所述,“波动性”往往是用词不当。策略师和媒体常警告“未来可能有波动”,他们真正意思是“未来可能价格下跌”。没人担心或介意上行的波动。)
必须认识到,防范波动通常不是免费的。为降低波动而降低波动是次优策略:应当假定,偏好低波动资产和策略,在其他条件相同的情况下,会导致更低回报。只有具备卓越技能或阿尔法(见第 11 页)的经理人,才能克服这一负面假定,在降低波动的同时减少更少的回报。
尽管如此,由于许多客户、老板和其他相关方对剧烈起伏(嗯,主要是下跌)感到不安,资产管理人常采取措施降低波动。想想 2000 年科技泡沫破裂引发股市三年下跌后,机构投资者纷纷涌入对冲基金的情况。(这是自 1939—41 年以来的首次三年下跌。)对冲基金——此前属于家庭作坊式行业,多数基金管理的资本来自富裕个人,仅几亿美元——在下跌中表现远好于股票。机构被这些基金的低波动所吸引,投入了数十亿美元。
平均而言,对冲基金提供了机构想要的稳定性。但在喧嚣中,以低波动赚取高回报的理念却丢失了。相反,对冲基金经理将追求低波动本身作为目标,因为他们知道这是机构所追逐的。结果,在大约过去 18 年里,平均对冲基金提供了所期望的低波动,但伴随的只是个位数的微薄回报。那里并无奇迹。
我为何赘述这些?因为波动只是暂时现象(假设你在财务上能挺过去),多数投资者不应像他们看起来那样重视它。正如我在《我不同意》中所写,许多投资者拥有只专注于长期的奢侈……如果他们善加利用的话。波动对投资者而言应该没那么值得担忧:
benchmark, and this shows up in superior Sharpe ratios. But the real risk in high yield bonds – the one we care about and have a history of reducing – is the risk of default. We don’t much care about reducing volatility, and we don’t take conscious steps to do so. We believe high Sharpe ratios can result from – and perhaps are correlated with – the actions we take to reduce defaults. Volatility is particularly irrelevant in our field of fixed income or “credit.” Bonds, notes, and loans represent contractual promises of periodic interest and repayment at maturity. Most of the time when you buy a bond with an 8% yield, you’ll basically get the 8% yield over its life, regardless of whether the bond price goes up or down in the interim. I say “basically” because, if the price falls, you’ll have the opportunity to reinvest the interest payments at yields above 8%, so your holding-period return will creep up. Thus, the downward price volatility that so many revile is actually a good thing – as long as it doesn’t presage defaults. (Note that, as indicated in this paragraph, “volatility” is often a misnomer. Strategists and the media often warn that “there may be volatility ahead.” What they really mean is “there may be price declines ahead.” No one worries about, or minds experiencing, volatility to the upside.) It’s essential to recognize that protection from volatility generally isn’t a free good. Reducing volatility for its own sake is a suboptimizing strategy: It should be presumed that favoring lowervolatility assets and approaches will – all things being equal – lead to lower returns. Only managers with superior skill, or alpha (see page 11), will be able to overcome this negative presumption and reduce return less than they reduce volatility. Nevertheless, since many clients, bosses, and other constituents are uncomfortable with radical ups and downs (well, mostly with downs), asset managers often take steps to reduce volatility. Consider what happened after institutional investors began to pile into hedge funds following the three-year decline of stocks brought on by the bursting of the tech bubble in 2000. (This was the first three-year decline since 1939-41.) Hedge funds – previously members of a cottage industry where most funds had a few hundred million dollars of capital from wealthy individuals – did much better than stocks in the downdraft. Institutions were attracted to these funds’ low volatility, and thus invested billions in them. The average hedge fund delivered the stability the institutions wanted. But somewhere in the shuffle, the idea of earning high returns with low volatility got lost. Instead, hedge fund managers pursued low volatility as a goal in itself, since they knew it was what the institutions were after. As a result, over roughly the last 18 years, the average hedge fund delivered the low volatility that was desired, but it was accompanied by modest single-digit returns. No miracle there. Why do I recite all this? Because volatility is just a temporary phenomenon (assuming you survive it financially), and most investors shouldn’t attach as much importance to it as they seem to. As I wrote in I Beg to Differ, many investors have the luxury of being able to focus exclusively on the long term . . . if they will take advantage of it. Volatility should be less of a concern for investors: • • • • •
第一类:实体长存,如人寿保险公司、捐赠基金和养老金;
资本不会被大额一次性抽走;
基本业务不会因下行波动而受损;
不必担心被投资人或委托人逼着犯错;
也没有用短期必须偿还的债务加杠杆。
whose entities are long-lived, like life insurance companies, endowments, and pension funds; whose capital isn’t subject to lump-sum withdrawal; whose essential activities won’t be jeopardized by downward fluctuations; who don’t have to worry about being forced into mistakes by their constituents; and who haven’t levered up with debt that might have to be repaid in the short run.
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多数投资者缺乏其中某些特质,极少有人能兼备全部。但只要具备了这些特质,投资者就应该利用自己承受波动的能力,因为许多潜在回报很高的投资,本身就可能经历大幅波动。沃伦·巴菲特总是说得最到位,在这个话题上,他曾精辟地指出:“我们宁愿要起伏不定的 15% 回报,也不要平稳顺滑的 12% 回报。”如果投资者恰恰相反——觉得平稳的 12% 比起伏的 15% 更可取——那就该问问自己,他们对波动的厌恶,到底是财务上的,还是情绪上的。
当然,员工、投资委员会成员以及受雇的投资经理所做的选择,可能不得不考虑现实因素。负责机构投资组合的人,有充分理由去回避那些其机构或客户在财务上或许能承受、但依然会感到不适的涨跌。每个人能做的,无非是在自己的特定处境下尽力而为。但我的底线是:很多情况下,人们对波动的重视程度,远远超过了它应有的分量。
顺带一提
既然说到波动这个话题,我想转向一个近来波动不太大的领域:私募投资基金。2022 年前九个月,股票和债券都经历了有记录以来最糟糕的时期之一。然而许多私募股权和私募债权基金,今年迄今仅报告了小幅亏损。我常被问到这意味着什么,以及这是否反映现实。
也许私募基金的业绩报告是准确的。(我知道我们相信自己的是准确的。)但我最近读到一篇有趣的《金融时报》文章,作者罗宾·威格尔斯沃思,标题颇具挑衅性:“私募股权行业的波动洗白、回报操纵与‘虚假幸福’”。以下是其中部分内容:
公募与私募市场之间日益扩大的业绩差距,是当下一个热门话题。投资者常被视为愚蠢的冤大头,被狡猾的私募大亨的“回报操纵”所蒙蔽。但假如他们是共谋呢?……佛罗里达大学三位学者的新论文正是持此观点。基于近二十年的私募股权房地产基金数据,布莱克·杰克逊、戴维·林和安迪·纳兰霍得出结论:“私募基金经理操纵回报,是为了迎合他们的投资者。”
……杰克逊、林和纳兰霍的核心结论是:“普通合伙人似乎并非为了愚弄有限合伙人而操纵中期回报,而是因为有限合伙人希望他们这么做。”
与银行设计金融产品以满足追逐收益的投资者、或公司发放股息以满足投资者对分红的需求这类逻辑类似,我们认为私募基金经理抬高中期业绩报告,是为了迎合某些投资者对被操纵回报的需求。
……如果普通合伙人抬高或平滑回报,……有限合伙人机构内部的投资经理就能报出人为虚高的夏普比率、阿尔法值和顶
Most investors lack some of these things, and few have them all. But to the extent these characteristics are present, investors should take advantage of their ability to withstand volatility, since many investments with the potential for high returns might be susceptible to substantial fluctuations. Warren Buffett always puts it best, and on this topic he usefully said, “We prefer a lumpy 15% return to a smooth 12% return.” Investors who’d rather have the reverse – who find a smooth 12% preferable to a lumpy 15% – should ask themselves whether their aversion to volatility is mostly financial or mostly emotional. Of course, the choices made by employees, investment committee members, and hired investment managers may have to reflect real-world considerations. People in charge of institutional portfolios can have valid reasons for avoiding ups and downs that their organizations or clients might be able to stomach in financial terms but would still find unpleasant. All anyone can do is the best they can under their particular circumstances. But my bottom line is this: In many cases, people accord volatility far more importance than they should. An Aside While I’m on the subject of volatility, I want to turn to an area that hasn’t reported much of it of late: private investment funds. The first nine months of 2022 constituted one of the worst periods on record for both stocks and bonds. Yet many private equity and private debt funds are reporting only small losses for the year to date. I’m often asked what this means, and whether it reflects reality. Maybe the performance of private funds is being reported accurately. (I know we believe ours is.) But I recently came across an interesting Financial Times article provocatively titled, “The volatility laundering, return manipulation and ‘phoney happiness’ of private equity,” by Robin Wigglesworth. Here’s some of its content: The widening performance gap between public and private markets is a huge topic these days. Investors are often seen as the gormless [foolish] dupes falling for the “return manipulation” of cunning private equity tycoons. But what if they are co-conspirators? . . . That’s what a new paper from three academics at the University of Florida argues. Based on nearly two decades worth of private equity real estate funds data, Blake Jackson, David Ling and Andy Naranjo conclude that “private equity fund managers manipulate returns to cater to their investors.” . . . Jackson, Ling and Naranjo’s . . . central conclusion is that “GPs do not appear to manipulate interim returns to fool their LPs, but rather because their LPs want them to do so”. Similar to the idea that banks design financial products to cater to yield-seeking investors or firms issue dividends to cater to investor demand for dividend payments, we argue that PE fund managers boost interim performance reports to cater to some investors’ demand for manipulated returns. . . . If a GP boosts or smooths returns, . . . investment managers within LP organizations can report artificially higher Sharpe ratios, alphas, and top-
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类似内部收益率(IRR)这样的回报指标报告给受托人或其他监督者。在此过程中,这些投资经理的中位任职期通常为四年,往往在私募股权基金的最终回报实现之前很久就已届满,他们或许能借此改善内部的工作保障或潜在的劳动力市场前景……
这或许有助于解释,尽管今年全球股市下跌了 22%,私募股权公司在 2022 年第一季度平均仍报告了 1.6% 的收益,此后仅温和下调。(2022 年 11 月 2 日,强调为原文所加)
如果普通合伙人(GP)和有限合伙人(LP)都对看似异常优异的回报感到满意,结果是否值得怀疑?私人资产的业绩是否被如实陈述?报告的低波动性是否属实?如果当前商业环境充满挑战,难道不应该同样影响公开和私人投资的价格吗?
但还有另一系列相关问题:普通合伙人拒绝减记那些短期疲软但长期前景依然光明的公司私人投资,难道不公平吗?而且,尽管今年私人投资可能未被充分减记,但公开证券的价格波动是否确实超过了应有水平,从而夸大了长期价值的变化?我当然认为公开证券价格反映的心理波动往往过度。私人投资的价格是否应效仿这一点?
与大多数事情一样,报告中的任何不准确最终都会水落石出。终究,私人债务会到期,私募股权持仓也不得不被出售。如果今年报告的回报低估了实际的价值下跌,那么从此以后的业绩表现很可能会出人意料地糟糕。而且我确信,这将促使许多学者(或许还有少数监管者)质疑 2022 年私人投资的定价是否过高。我们拭目以待。
什么不重要:过度活跃
在我 2022 年 1 月的《出售》(Selling Out)一文中,我表达了自己的强烈观点:大多数投资者交易过于频繁。由于连续做出多个正确决策很难,交易又耗费成本,而且往往源于投资者的情绪波动,所以少做交易更好。
我小时候流行一句话:别光坐着,做点什么。但对投资而言,我会把它反过来:别光做点什么,坐着就好。培养这样一种心态:你赚钱不靠买进卖出;你(希望如此)赚钱靠的是持有。多想,少交易。做更少但更有分量的交易。过度分散投资会降低每笔交易的重要性,从而可能让投资者在没有充分研究或坚定信念的情况下贸然行动。我认为大多数投资组合都过度分散、过度交易。
在《知识的幻觉》(The Illusion of Knowledge)和《出售》中,我花了不少篇幅警告投资者,通过短期市场择时来提高回报是多么困难,并引用了伟大投资者比尔·米勒的话:“时间,而非时机,才是股市积累财富的关键。”
关于这个话题,最近有位顾问问我:“如果你不尝试适时进出市场,那你怎么赚取费用?”我的回答是,我们的工作是构建长期表现良好的投资组合,而市场择时除非能持续做对,否则不太可能改善结果。
line returns, such as IRRs, to their trustees or other overseers. In doing so, these investment managers, whose median tenure of four years often expires years before the ultimate returns of a PE fund are realized, might improve their internal job security or potential labor market outcomes. . . . This probably helps explain why private equity firms on average actually reported gains of 1.6 per cent in the first quarter of 2022 and only some modest mark downwards since then, despite global equities losing 22 per cent of their value this year. (November 2, 2022. Emphasis added) If both GPs and LPs are happy with returns that seem unusually good, might the result be suspect? Is the performance of private assets being stated accurately? Is the low volatility being reported genuine? If the current business climate is challenging, shouldn’t that affect the prices of public and private investments alike? But there’s another series of relevant questions: Mightn’t it be fair for GPs to decline to mark down private investments in companies that have experienced short-term weakness but whose long-term prospects remain bright? And while private investments might not have been marked down enough this year, isn’t it true that the prices of public securities are more volatile than they should be, overstating the changes in long-term value? I certainly think public security prices reflect psychological swings that are often excessive. Should the prices of private investments emulate this? As with most things, any inaccuracy in reporting will eventually come to light. Eventually, private debt will mature, and private equity holdings will have to be sold. If the returns being reported this year understate the real declines in value, performance from here on out will likely look surprisingly poor. And I’m sure this will lead plenty of academics (and maybe a few regulators) to question whether the pricing of private investments in 2022 was too high. We’ll see. What Doesn’t Matter: Hyper-Activity In Selling Out (January 2022), I expressed my strong view that most investors trade too much. Since it’s hard to make multiple consecutive decisions correctly, and trading costs money and is often likely to result from an investor’s emotional swings, it’s better to do less of it. When I was a boy, there was a popular saying: Don’t just sit there; do something. But for investing, I’d invert it: Don’t just do something; sit there. Develop the mindset that you don’t make money on what you buy and sell; you make money (hopefully) on what you hold. Think more. Trade less. Make fewer, but more consequential, trades. Over-diversification reduces the importance of each trade; thus it can allow investors to take actions without adequate investigation or great conviction. I think most portfolios are overdiversified and over-traded. I devoted a good portion of The Illusion of Knowledge and Selling Out to warning investors about how difficult it is to improve returns through short-term market timing, and I quoted the great investor Bill Miller: “Time, not timing, is key to building wealth in the stock market.” On this subject, I was recently asked by a consultant, “If you don’t try to get in and out of the market as appropriate, how do you earn your fees?” My answer was that it’s our job to assemble portfolios that will perform well over the long run, and market timing is unlikely to add to the outcome unless it can be done
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嗯,这件事我本来就没太大把握。“那你呢?”我问。“如果你帮客户确定了合适的资产配置,一个月后不调整,是不是就等于没赚到那份顾问费?”
同样,在《知识的幻觉》出版那天,一位老朋友问我:“可你总得对短期事件表个态吧,不是吗?”我的回答,不出所料,是:“不,如果你在表态这件事上没有优势,何必表态?你为什么要去赌一枚硬币的正反面,尤其是下注还要花钱的时候?”
关于这个话题,我想引用一段精彩的话来收尾:
最近一则备受关注的新闻,涉及富达账户的一项内部业绩评估,目的是弄清楚 2003 年至 2013 年间,哪类投资者获得了最好的回报。客户账户审计结果显示,表现最好的投资者,要么已经去世,要么就是账户长期没有操作——那些换了工作后“忘了”旧 401(k) 账户、让原有配置保持不动的人,或者是去世的人,资产在遗产处理期间被冻结。(“富达最好的投资者是死人”,《保守型收益投资者》,2020 年 4 月 8 日)
由于记者们始终找不到那份富达的研究报告,富达自己似乎也拿不出来,这个故事大概是编造的。但我还是很喜欢这个说法,因为它的结论与我的想法不谋而合。我并不是说为了提升投资业绩值得去死,但投资者或许该试着模拟那种状态——把手老老实实揣起来。
那么,什么才重要?
真正重要的是你的持仓在未来五年、十年甚至更长时间里的表现,以及这段时期结束时,这些资产的价值与你投入的本金和你的需求相比如何。
有人说,长期是由一连串短期组成的,只要每个短期做对了,长期自然成功。他们可能认为,通往成功的路子就是频繁交易,利用相对价值判断、对市场热度变化的预测,以及对宏观事件的预估来获利。我显然不这么看。
大多数个人投资者,以及任何明白跑赢市场有多难的人,从长远来看,持有指数基金可能是最好的选择。投资专业人士,以及其他觉得自己需要或者想要主动管理的人,或许能从下面几条建议中受益。
我认为,如果大多数人少关注短期趋势或宏观动向,多下功夫去获得对未来多年基本面前景的深刻洞察,他们成功的概率会大得多。他们应该:
well, which I’m not convinced is usually the case. “What about you?” I asked. “If you help a client establish an appropriate asset allocation, does it follow that you’re not earning your fees if you don’t change it a month later?” Likewise, the day The Illusion of Knowledge came out, an old friend asked me, “But you have to take a position [on short-run events], don’t you?” My answer, predictably, was, “No, not if you don’t have an advantage when doing so. Why would you bet on the outcome of a coin toss, especially if it cost money to play?” I’ll end my discussion of this subject with a wonderful citation: A news item that has gotten a lot of attention recently concerned an internal performance review of Fidelity accounts to determine which type of investors received the best returns between 2003 and 2013. The customer account audit revealed that the best investors were either dead or inactive – the people who switched jobs and “forgot” about an old 401(k) leaving the current options in place, or the people who died and the assets were frozen while the estate handled the assets. (“Fidelity’s Best Investors Are Dead,” The Conservative Income Investor, April 8, 2020) Since the journalists have been unable to find the Fidelity study, and apparently so has Fidelity, the story is probably apocryphal. But I still like the idea, since the conclusion is so much in line with my thinking. I’m not saying it’s worth dying to improve investment performance, but it might be a good idea for investors to simulate that condition by sitting on their hands. So What Does Matter? What really matters is the performance of your holdings over the next five or ten years (or more) and how the value at the end of the period compares to the amount you invested and to your needs. Some people say the long run is a series of short runs, and if you get those right, you’ll enjoy success in the long run. They might think the route to success consists of trading often in order to capitalize on relative value assessments, predictions regarding swings in popularity, and forecasts of macro events. I obviously do not. Most individual investors and anyone who understands the limitations regarding outperformance would probably be best off holding index funds over the long run. Investment professionals and others who feel they need or want to engage in active management might benefit from the following suggestions. I think most people would be more successful if they focused less on the short run or macro trends and instead worked hard to gain superior insight concerning the outlook for fundamentals over multi-year periods in the future. They should: • • • •
研究公司与证券,评估其盈利潜力等因素;
买入那些相对其潜力而言价格具有吸引力的公司;
只要公司的盈利前景和价格的吸引力保持不变,就一直持有;
只有当这些条件无法再次确认,或者出现了更优的选择时,才进行调整。
study companies and securities, assessing things such as their earnings potential; buy the ones that can be purchased at attractive prices relative to their potential; hold onto them as long as the company’s earnings outlook and the attractiveness of the price remain intact; and make changes only when those things can’t be reconfirmed, or when something better comes along.
2022 年橡树资本管理有限合伙公司(Oaktree Capital Management, L.P.)
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在第一页提到的伦敦会议上——我在讨论(并劝阻大家不要)关注短期表现时——我说过,在橡树资本,我们认为自己的工作有两项:(a)买入那些会按承诺如期兑付(或即便未兑现也能收回同等金额或更多)的债券,以及(b)投资于那些会随时间推移而价值增长的公司。我坚持这一观点。
上述对投资者工作的描述相当简单……有人可能会说过于简单了。确实如此。用宽泛的术语设定目标和流程是容易的。难的是执行得比大多数人更好:这是唯一能跑赢市场的途径。既然平均水平的决策已反映在证券价格中,并产生平均水平的业绩,那么超额结果就必须基于超群的洞察力。但我无法告诉你如何在这些方面做得比普通投资者更好。
这个过程中还有很多内容,我将概述我认为值得记住的一些关键要素。你会在这里看到一些反复出现的主题,来自其他备忘录和本备忘录的前面部分,但我并不为反复强调重要之事而道歉:
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At the London conference mentioned on page one – while I was discussing (and discouraging) paying attention to the short run – I said that at Oaktree we consider it our job to (a) buy debt that will be serviced as promised (or will return the same amount or more if not) and (b) invest in companies that will become more valuable over time. I’ll stick with that. The above description of the investor’s job is quite simple . . . some might say simplistic. And it is. Setting out the goals and the process in broad terms is easy. The hard part is executing better than most people: That’s the only route to market-beating performance. Since average decision-making is reflected in security prices and produces average performance, superior results have to be based on superior insight. But I can’t tell you how to do these things better than the average investor. There’s a lot more to the process, and I’m going to outline some of what I think are key elements to remember. You’ll recognize recurring themes here, from other memos and from earlier pages in this one, but I make no apology for dwelling on things that are important: • • •
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忘掉短期,只有长期才算数。把证券看作公司的股权,而不是交易卡片。
想清楚你是否相信市场有效。如果相信,那么你面对的市场是否低效到足以让你跑赢大盘,而你本人又是否有能力利用这一点?
想清楚你的风格更偏进攻还是防守。你会努力寻找更多、更大的赢家,还是专注于避开输家,或者两者兼顾?你会想在上涨时赚得更多,还是下跌时亏得更少,或者两者兼顾?(提示:“两者兼顾”比只选其一难得多。)总的来说,人的投资风格应该契合自己的性格。
想想你正常的风险姿态应该是什么——你在进攻与防守之间的常规平衡——这要基于你或你的客户的财务状况、需求、愿望以及承受波动的能力。再想想,你会不会根据市场的变化来调整这种平衡?
对回报和风险抱持健康的态度。要明白,“回报潜力越大越好”可能是一条危险的准则,因为回报潜力提高,通常也伴随着风险加大。另一方面,完全回避风险,通常也等于回避回报。
坚持要求足够的安全边际,或者具备扛过那些表现不如预期的时期的能力。
别再试图预测宏观,拼命研究微观,好让你的认知比旁人更深。要明白,只有拥有知识优势,你才有望成功,而且要对自己是否拥有这种优势保持清醒。要知道,光靠更加努力是不够的。
接受我儿子安德鲁的观点:仅仅掌握“眼下唾手可得的定量信息”,不会让你取得高于平均的成绩,因为别人也都掌握着同样的信息。
要认识到,心理的摆动远比基本面剧烈,而且往往摆错方向、摆错时机。要明白抵抗这些摆动有多重要。如果你能做到逆周期、反人群,就能从中获利。
研究投资环境中的状况——尤其是投资者的行为——并思考当前处于周期的什么位置。要明白,市场处在周期的哪个位置,将极大影响胜算是站在你这边还是对面。
买债券是因为你中意那个收益率,而不是为了交易。换句话说,如果你觉得 9% 的收益率足以补偿风险,而且你对 9% 心满意足,那就买 9% 的债券。不要指望靠利率下行带来的价格上涨,把 9% 的债券做出 11% 的回报。
Forget the short run – only the long run matters. Think of securities as interests in companies, not trading cards. Decide whether you believe in market efficiency. If so, is your market sufficiently inefficient to permit outperformance, and are you up to the task of exploiting it? Decide whether your approach will lean more toward aggressiveness or defensiveness. Will you try to find more and bigger winners or focus on avoiding losers, or both? Will you try to make more on the way up or lose less on the down, or both? (Hint: “both” is much harder to achieve than one or the other.) In general, people’s investment styles should fit their personalities. Think about what your normal risk posture should be – your normal balance between aggressiveness and defensiveness – based on your or your clients’ financial position, needs, aspirations, and ability to live with fluctuations. Consider whether you’ll vary your balance depending on what happens in the market. Adopt a healthy attitude toward return and risk. Understand that “the more return potential, the better” can be a dangerous rule to follow given that increased return potential is usually accompanied by increased risk. On the other hand, completely avoiding risk usually leads to avoiding return as well. Insist on an adequate margin of safety, or the ability to weather periods when things go less well than you expected. Stop trying to predict the macro; study the micro like mad in order to know your subject better than others. Understand that you can expect to succeed only if you have a knowledge advantage, and be realistic about whether you have it or not. Recognize that trying harder isn’t enough. Accept my son Andrew’s view that merely possessing “readily available quantitative information regarding the present” won’t give you above average results, since everyone else has it. Recognize that psychology swings much more than fundamentals, and usually in the wrong direction or at the wrong time. Understand the importance of resisting those swings. Profit if you can by being counter-cyclical and contrarian. Study conditions in the investment environment – especially investor behavior – and consider where things stand in terms of the cycle. Understand that where the market stands in its cycle will strongly influence whether the odds are in your favor or against you. Buy debt when you like the yield, not for trading purposes. In other words, buy 9% bonds if you think the yield compensates you for the risk, and you’ll be happy with 9%. Don’t buy 9% bonds expecting to make 11% thanks to price appreciation resulting from declining interest rates.
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至关重要的一点是,股票投资者的首要目标应当是(a)参与经济和企业的长期增长,(b)享受复利的神奇力量。想想自 1926 年以来,标普 500 指数(或其前身)每年 10.5% 的回报率,以及这一回报率将 1 美元变成如今超过 1.3 万美元的事实——尽管这段时期经历了 16 次衰退、一次大萧条、多次战争、一次世界大战、一场全球疫情,以及无数地缘政治动荡。
把参与市场平均水平的长期表现视为主要事件,而把主动提升表现的种种努力看作“锦上添花”。这或许与大多数主动型投资者的态度相反。通过超配和低配、短期交易、择时以及其他主动措施来提升结果并不容易。相信你能成功做到这些,需要假设你比一群非常聪明的人更聪明。在行动前请三思,因为成功的要求很高(见下文)。
别因为过度交易而把事情搞砸。把买卖视为一项费用支出,而不是利润中心。我喜欢未来自动化工厂的想法,里面只有一个人和一条狗;狗的工作是阻止人碰机器,人的工作是喂狗。投资者应该找到一种方法,大部分时间把手从投资组合上拿开。
结尾特别的话:不对称性
“不对称性”是我几十年来一直关注的概念,而且随着时间推移,我越来越觉得它重要。这是我用来概括投资卓越本质的词,也是衡量投资者的标准。
首先,给出一些定义:
Of critical importance, equity investors should make their primary goals (a) participating in the secular growth of economies and companies and (b) benefiting from the wonder of compounding. Think about the 10.5% yearly return of the S&P 500 Index (or its predecessors) since 1926 and the fact that this would have turned $1 into over $13,000 by now, even though the period witnessed 16 recessions, one Great Depression, several wars, one World War, a global pandemic, and many instances of geopolitical turmoil. Think of participating in the long-term performance of the average as the main event and the active efforts to improve on it as “embroidery around the edges.” This might be the reverse of most active investors’ attitudes. Improving results through over- and underweighting, short-term trading, market timing, and other active measures isn’t easy. Believing you can do these things successfully requires the assumption that you’re smarter than a bunch of very smart people. Think twice before proceeding, as the requirements for success are high (see below). Don’t mess it up by over-trading. Think of buying and selling as an expense item, not a profit center. I love the idea of the automated factory of the future, with its one man and one dog; The dog’s job is to keep the man from touching the machinery, and the man’s job is to feed the dog. Investors should find a way to keep their hands off their portfolios most of the time. A Special Word in Closing: Asymmetry “Asymmetry” is a concept I’ve been conscious of for decades and consider more important with every passing year. It’s my word for the essence of investment excellence and a standard against which investors should be measured. First, some definitions: • • • •
下面我要谈谈投资者是否拥有“超额收益”。严格来说,超额收益的定义是超出基准收益的回报,但我更愿意把它理解为卓越的投资技能。这是一种在低效存在时发现并加以利用的能力。
低效——即错误定价或失误——指的是资产价格偏离其公允价值的情形。这种偏离可能表现为便宜货,也可能相反,表现为价格虚高。
在风险调整后,便宜货长期来看必然跑赢其他投资。价格虚高的品种则恰恰相反。
“贝塔”是投资者或投资组合的相对波动性,也被称为相对敏感性或系统性风险。
I’m going to talk below about whether an investor has “alpha.” Alpha is technically defined as return in excess of the benchmark return, but I prefer to think of it as superior investing skill. It’s the ability to find and exploit inefficiencies when they’re present. Inefficiencies – mispricings or mistakes – represent instances when an asset’s price diverges from its fair value. These divergences can show up as bargains or the opposite, over-pricings. Bargains will dependably perform better than other investments over time after adjustment for their riskiness. Over-pricings will do the opposite. “Beta” is an investor’s or a portfolio’s relative volatility, also described as relative sensitivity or systematic risk.
信奉有效市场假说的人认为,组合的回报等于市场回报乘以组合的贝塔系数。仅凭这一点就足以解释业绩,因为在有效市场中不存在错误定价可供利用(因此也就不存在所谓的阿尔法)。因此,阿尔法是一种技能,它使投资者能够取得比单纯由市场回报和贝塔系数所解释的业绩更优秀的表现。换种说法,拥有阿尔法意味着投资者能享受到与亏损潜力不相称的盈利潜力:即不对称性。在我看来,当投资者能反复做到以下部分或全部事项时,不对称性便存在:
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People who believe in the efficient market hypothesis think of a portfolio’s return as the product of the market’s return multiplied by the portfolio’s beta. This is all it takes to explain results, since there are no mispricings to take advantage of in an efficient market (and so no such thing as alpha). Thus, alpha is skill that enables an investor to produce performance better than that which is explained purely by market return and beta. Another way to say this is that having alpha allows an investor to enjoy profit potential that is disproportionate to loss potential: asymmetry. In my view, asymmetry is present when an investor can repeatedly do some or all of the following: • • •
在好行情中赚的钱多于坏行情中回吐的钱,
赢的次数多于输的次数,
赢的时候赚得比输的时候亏得多,
make more money in good markets than he gives back in bad markets, have more winners than losers, make more money on his winners than he loses on his losers,
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• • •
在他的进攻或防御倾向被市场证实时表现优异,而未被证实时也不至于太糟;
在他的行业或策略受青睐时表现突出,而失宠时也不至于太差;
同时构建投资组合,让大多数意外都偏向惊喜。
do well when his aggressive or defensive bias proves timely but not badly when it doesn’t, do well when his sector or strategy is in favor but not badly when it isn’t, and construct portfolios so that most of the surprises are on the upside.
例如,我们多数人对激进或防守天生就有倾向。因此,一个激进型投资者在行情好的年份跑赢,或一个防守型投资者在行情差的年份跑赢,说明不了太多问题。要判断他们是否具备阿尔法并产生不对称性,我们得看:激进型投资者在行情差的时候,能否避免仅凭其激进风格本会遭受的全部损失;防守型投资者在行情好的时候,又能否避免错过过多涨幅。在我看来,“卓越”就体现在好年份与坏年份结果之间的不对称性。
依我看,如果某个投资者所面对的市场存在低效之处,而她又确有阿尔法,那么这种影响会体现在不对称的回报上。如果她的回报没有任何不对称性,那就说明她没有阿尔法(或者也许市场上根本没有可供她识别的低效之处)。反过来说,如果一个投资者没有阿尔法,她的回报就不会呈现不对称性。就这么简单。
为了便于理解,我说说对不对称性的看法。这一讨论基于我 2018 年出版的《掌握市场周期:让胜算站在你这边》一书中的内容。虽然我讲的时候好像是在说一个好年份和一个坏年份,但这些观察要成立,前提是这种规律要在相当多的年份里持续出现。
我们来看一位基金经理的表现:
市场表现
For example, most of us have an inherent bias toward either aggressiveness or defensiveness. For this reason, it doesn’t mean much if an aggressive investor outperforms in a good year or a defensive investor outperforms in a bad year. To determine whether they have alpha and produce asymmetry, we have to consider whether the aggressive investor is able to avoid the full loss that his aggressiveness alone would produce in a bad market and whether the defensive investor can avoid missing out on too much of the gain when the market does well. In my opinion, “excellence” lies in asymmetry between the results in good and bad times. As I see it, if inefficiencies are present in an investor’s market, and she has alpha, the impact will show up in asymmetrical returns. If her returns show no asymmetry, the investor doesn’t have alpha (or perhaps there are no inefficiencies for her to identify). Flipping that over, if an investor doesn’t have alpha, her returns won’t be asymmetrical. It’s as simple as that. To simplify, here’s how I think about asymmetry. This discussion is based on material I included in my 2018 book Mastering the Market Cycle: Getting the Odds on Your Side. While I may appear to be talking about one good year and one bad one, these observations can only be considered valid if these patterns hold over a meaningful number of years. Let’s consider a manager’s performance: Market performance
+10%
+10%
-10%
-10%
Manager A
Manager A
+10%
+10%
-10%
-10%
上述经理显然没有增加任何价值。你还不如投资于一只指数基金(或许费用要低得多)。
这两位经理同样没有增加任何价值:市场表现。
The above manager clearly adds no value. You might as well invest in an index fund (probably at a much lower fee). These two managers also add no value: Market performance
+10%
+10%
-10%
-10%
Manager B
Manager C
Manager B Manager C
+5%
+20%
+5% +20%
-5%
-20%
-5% -20%
经理 B 是一个毫无阿尔法收益、贝塔系数为 0.5 的经理,而经理 C 是一个同样无阿尔法收益、贝塔系数为 2.0 的经理。要复制经理 B 的业绩,你只需将一半资金投入指数基金,其余部分藏在床垫下即可;而要复制经理 C,你只需用借来的资本加倍投资,并将全部资金投入指数基金。
Manager B is just a no-alpha manager with a beta of 0.5, and manager C is a no-alpha manager with a beta of 2.0. You could get the same results as manager B by putting half your capital in an index fund and keeping the rest under your mattress and in the case of manager C, by doubling your investment with borrowed capital and putting it all in an index fund.
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然而,这两位经理人确实拥有超额收益,因为他们的表现呈现出不对称性:
These two managers, however, do have alpha, as they exhibit asymmetry: Market performance
+10%
+10%
-10%
-10%
Manager D
Manager E
Manager D Manager E
+17%
+9%
+17% +9%
-12%
-3%
-12% -3%
两位经理的回报更多体现的是市场上涨时的收益,而非下跌时的损失。D 经理堪称进攻型经理人,且具备阿尔法能力;市场上涨时,她能实现市场涨幅的 170%,但市场下跌时,仅承担跌幅的 120%。E 经理则是防守型经理人,同样具备阿尔法能力;市场上涨时,他的回报仅为涨幅的 90%,但市场下跌时,仅承担 30% 的跌幅。这种不对称性只能归因于阿尔法的存在。风险承受能力强的客户会倾向于投资 D,而风险厌恶型客户则会选择 E。
这位经理人确实极为出色:
市场表现
Both managers’ returns reflect more of the market’s gain in good times than they do its loss in bad ones. Manager D might be described as an aggressive manager with alpha; she achieves 170% of the market’s return when the market rises but suffers only 120% of the loss when it falls. Manager E is a defensive manager with alpha; his returns reflect 90% of the gain in an up market but only 30% of the loss in a down market. These asymmetries can only be attributed to the presence of alpha. Risk-tolerant clients will prefer to invest with D, and risk-averse ones will prefer E. This manager is truly exceptional: Market performance
+10%
+10%
-10%
-10%
Manager F
Manager F
+20%
+20%
-5%
-5%
她在涨跌两个方向上都能跑赢市场:市场上涨时,她的涨幅超过市场;市场下跌时,她的跌幅小于市场。在牛市里她的收益高得让人忍不住想用“激进”来形容她。可既然在熊市里她跌得更少,这个说法就站不住脚了。要么她在进攻和防守之间没有偏好,要么她的阿尔法收益大得足以抵消这种偏好。
最后,来看一位史上最伟大的基金经理:
市场表现
She beat the market in both directions: She’s up more than the market when it rises and down less when it falls. She’s up so much in a good market that you might be tempted to describe her as aggressive. But since she’s down less in a down market, that description won’t hold. Either she doesn’t have a bias in terms of aggressiveness versus defensiveness, or her alpha is great enough to offset it. Finally, here’s one of the greatest managers of all time: Market performance
+10%
+10%
-10%
-10%
Manager G
Manager G
+20%
+20%
+5%
+5%
G 经理在牛市和熊市中表现得同样出色。他显然没有激进或保守的偏见,因为他在两种市场环境中的表现都非常突出。他的阿尔法收益足以让他逆市而行,在下跌的年份里依然取得正回报。当你找到 G 经理时,你应该:(a)对他报告的表现进行详尽调查;(b)如果数据经得起推敲,就投入大量资金;(c)希望他不要接受太多资金,以免他的优势消失;(d)把他的电话号码给我。
Manager G is up in good and bad markets alike. He clearly doesn’t have an aggressiveness/defensiveness bias, since his performance is exceptional in both markets. His alpha is sufficient to enable him to buck the trend and achieve a positive return in a down year. When you find Manager G, you should (a) do extensive due diligence regarding his reported performance, (b) if the numbers hold up, invest a lot of money with him, (c) hope he won’t accept so much money that his edge goes away, and (d) send me his number. *
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最重要的因素是什么?不对称性。•
What matters most? Asymmetry. •
总而言之,不对称性体现在一位经理人顺境时能做得极为出色,逆境时也不至于太糟。
In sum, asymmetry shows up in a manager’s ability to do very well when things go his way and not too bad when they don’t.
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一句伟大的格言说:“永远不要把聪明才智和牛市混为一谈。”具备创造不对称性所需技能的经理人之所以特殊,是因为他们能从市场涨势之外的来源中打造出可观的收益。
细想之下,主动投资业务的核心完全在于不对称性。如果一位经理人的业绩未能超越市场回报及其相对风险立场——后者源于他对市场板块的选择、策略以及进取程度——所能解释的范围,那么他根本没有赚到自己的管理费。
A great adage says, “Never confuse brains and a bull market.” Managers with the skill needed to produce asymmetry are special because they’re able to fashion good gains from sources other than market advances. When you think about it, the active investment business is, at its heart, completely about asymmetry. If a manager’s performance doesn’t exceed what can be explained by market returns and his relative risk posture – which stems from his choice of market sector, tactics, and level of aggressiveness – he simply hasn’t earned his fees.
没有不对称性(参见第 12 页的经理 A、B、C),主动管理就不创造任何价值,也不配收取任何费用。事实上,如果主动型投资者不具备超群的技能或洞察力,他做出的所有选择都将徒劳无功。按照定义,平均水平的投资者和低于平均水平的投资者不具备阿尔法,也产生不了不对称性。
大问题在于如何实现不对称性。人们关注的大多数东西——我在第一页到第九页描述为无关紧要的那些东西——无法带来不对称性。正如我之前说过的,所有投资者思考的平均值产生了市场价格,显然也产生了平均业绩。不对称性只能由少数具备超群技能和洞察力的人来展现。关键就在于找到这些人。
2022 年 11 月 22 日
Without asymmetry (see Managers A, B, and C on page 12), active management delivers no value and deserves no fees. Indeed, all the choices an active investor makes will be for naught if he doesn’t possess superior skill or insight. By definition, average investors and below-average investors don’t have alpha and can’t produce asymmetry. The big question is how to achieve asymmetry. Most of the things people focus on – the things I describe on pages one through nine as not mattering – can’t provide it. As I’ve said before, the average of all investors’ thinking produces market prices and, obviously, average performance. Asymmetry can only be demonstrated by the relatively few people with superior skill and insight. The key lies in finding them. November 22, 2022
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