全都是大错特错
Memo to:
Memo to:
Oaktree Clients
Oaktree Clients
From:
From:
Howard Marks
Howard Marks
Re:
Re:
这完全是个天大的误会
It’s All a Big Mistake
错误是我们这个圈子里常聊的话题。投资者因为判断失误导致业绩不佳而挨批,这事儿不新鲜。但很少有人把错误当成投资过程中不可或缺的一环。我写这封信,就是想指出:卓越的投资,本质上全是关于错误。说白了,一笔交易能有一方大获成功,那另一方必然犯了大错。打牌有句老话,每桌都有个“鱼”(冤大头,或者是个八成会输的菜鸟),你玩了一个小时还没看出谁是那条鱼,那鱼就是你。同样,你参与的每一笔投资交易,八成都有某个人在犯错。成功的关键,就是别让那个人是你。
通常买家买资产,是因为他觉得这东西值他付的那个价。而卖家卖资产,是因为他觉得拿到手的钱超过了这东西的价值。说有一个人错了,基本错不了。严格来说,也未必非如此不可,因为税收状况、时间框架、投资者处境这些方面总有差异。但总的来说,双赢的交易远比一赢一输的交易少见。大多数交易尘埃落定之后,买卖双方不太可能一样开心。
我觉得认认真真聊聊投资错误这事儿特别值得。首先,它提醒我们出错的可能性无处不在,所以把少犯错当成关键目标有多重要。其次,既然每笔交易总有一方是错的,我们得琢磨琢磨,凭什么觉得自己不是那个错的。第三,这样一来,我们就会想想,怎么才能让自己成为犯错那方的概率降到最低。
Mistakes are a frequent topic of discussion in our world. It’s not unusual to see investors criticized for errors that resulted in poor performance. But rarely do we hear about mistakes as an indispensible component of the investment process. I’m writing now to point out that mistakes are all that superior investing is about. In short, in order for one side of a transaction to turn out to be a major success, the other side has to have been a big mistake. There’s an old saying in poker that there’s a “fish” (a sucker, or an unskilled player who’s likely to lose) in every game, and if you’ve played for an hour without having figured out who the fish is, then it’s you. Likewise, in every investment transaction you’re part of, it’s likely that someone’s making a mistake. The key to success is to not have it be you. Usually a buyer buys an asset because he thinks it’s worth more than the price he’s paying. But the seller sells the asset because he thinks the price he’s getting exceeds its value. It’s pretty safe to say one of them has to be wrong. Strictly speaking, that doesn’t have to be true, thanks to differences in things like tax status, timeframe and investors’ circumstances. But in general, win/win transactions are much less common than win/lose transactions. When the dust has settled after most trades, the buyer and seller are unlikely to be equally happy. I consider it highly desirable to focus on the topic of investing mistakes. First, it serves as a reminder that the potential for error is ever-present, and thus of the importance of mistake minimization as a key goal. Second, if one side of every transaction is wrong, we have to ponder why we should think it’s not us. Third, then, it causes us to consider how to minimize the probability of being the one making the mistake.
投资理论中的错误
根据有效市场假说,那些积极进取、聪明、客观且理性的投资者共同努力,会促使资产按其内在价值定价。因此不存在错误:没有被低估的便宜货供优秀投资者识别并买入,也没有被高估的资产让平庸投资者上当。既然所有资产定价公平,一旦以公平价格买入,理应获得公平的风险调整后回报,不多也不少。这正是该假说最著名论断的来源:你无法战胜市场。
我经常讨论这种市场效率定义及其谬误。事实是,尽管所有投资者都有赚钱的动机(否则他们也不会投资),但(a)远非所有人都聪明,且(b)几乎没有人能始终保持客观和理性。
Investment Theory on Mistakes According to the efficient market hypothesis, the efforts of motivated, intelligent, objective and rational investors combine to cause assets to be priced at their intrinsic value. Thus there are no mistakes: no undervalued bargains for superior investors to recognize and buy, and no overvaluations for inferior investors to fall for. Since all assets are priced fairly, once bought at fair prices they should be expected to produce fair risk-adjusted returns, nothing more and nothing less. That’s the source of the hypothesis’s best-known dictum: you can’t beat the market. I’ve often discussed this definition of market efficiency and its error. The truth is that while all investors are motivated to make money (otherwise, they wouldn’t be investing), (a) far from all of them are intelligent and (b) it seems almost none are consistently objective and rational.
2012 年橡树资本管理有限合伙公司
2012 Oaktree Capital Management, L.P.
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相反,投资者的情绪往往在极度乐观与极度悲观之间剧烈摇摆——从过度自信到惊恐万分——结果导致资产价格可能完全脱离内在价值。此外,投资者常常无法发掘全部相关信息,无法对其进行系统分析,也无法挺身而出采取无人问津的立场。正是这些因素,催生了所谓的“低效”——这是学者们给“错误”起的高大上称呼。
我坚信市场可以是高效的——即“能迅速消化信息”的意义上——但市场并非总能确保正确消化信息。定价过低和过高的情况时有发生。然而,上述段落中提到的那些缺陷,使得这些错误定价难以被转化为利润。尽管市场价格常常远非“正确”,但对大多数投资者而言,几乎不可能察觉到市场共识在资产定价上犯了错,并据此采取行动。因此,理论说市场无法被战胜——至少对绝大多数投资者而言——是完全正确的。
只有当人们确信两点时,才应参与主动投资:(a)他们考虑的市场中确实存在定价错误;(b)他们自己——或他们聘用的经理——有能力识别这些错误并加以利用。除非这两个条件都成立,否则在主动管理上投入的时间、精力、交易成本和管理费都将付诸东流。主动管理必须被视为一种寻找错误的行为。
Rather, investors swing wildly from optimistic to pessimistic – and from over-confident to terrified – and as a result asset prices can lose all connection with intrinsic value. In addition, investors often fail to unearth all of the relevant information, analyze it systematically, and step forward to adopt unpopular positions. These are some of the elements that give rise to what are called “inefficiencies,” academics’ highfalutin word for “mistakes.” I absolutely believe that markets can be efficient – in the sense of “quick to incorporate information” – but certainly they aren’t sure to incorporate it correctly. Underpricings and overpricings arise all the time. However, the shortcomings described in the paragraph just above render those mispricings hard to profit from. While market prices are often far from “right,” it’s nearly impossible for most investors to detect instances when the consensus has done a faulty job of pricing assets, and to act on those errors. Thus theory is quite right when it says the market can’t be beat . . . certainly by the vast majority of investors. People should engage in active investing only if they’re convinced that (a) pricing mistakes occur in the market they’re considering and (b) they – or the managers they hire – are capable of identifying those mistakes and taking advantage of them. Unless both of those things are true, any time, effort, transaction costs and management fees expended on active management will be wasted. Active management has to be seen as the search for mistakes.
投资错误的行为根源
如上所述,投资理论主张资产以公允价格成交,因此不存在所谓的超额风险调整收益。但现实世界的数据告诉我们,超额收益确实存在,尽管远非普遍。有些人发现,至少在某些时候,可以以低于实际价值的价钱买入资产。但这需要有人愿意以低于实际价值的价钱卖出,而这些人的配合不可或缺。是什么让他们这样做?错误为何会发生?行为金融学这个新兴领域,正是要探究源于情绪、心理和认知局限的错误。
假如市场价格由一位“定价沙皇”来制定,此人(1)不知疲倦,(2)掌握全部事实,(3)精通分析,(4)完全理性、毫无情绪,那么资产总能基于可得信息被正确定价——既不会过低,也不会过高。即便没有这位沙皇,如果市场中的投资者都符合上述描述,市场同样能把资产定价得完美无缺。
这正是有效市场理论家的设想,但现实并非如此。极少有投资者能同时满足上述四项要求。而当他们有所欠缺时,尤其在第(4)项——保持理性、不带情绪——上失守,似乎所有人都会在同一时间犯下同一方向的错误。这就是从众行为的根源,也是泡沫与崩盘——所有投资错误中最大的两类——背后的推手。
按有效市场假说的说法,人们研究资产、评估其价值,从而决定买入还是卖出。基于资产的当前价值及其变动前景,每项资产的现行价格都隐含着一个预期收益和风险水平。市场参与者据此行事。
Behavioral Sources of Investment Error As described above, investment theory asserts that assets sell at fair prices, and thus there’s no such thing as superior risk-adjusted performance. But real-world data tells us that superior performance does exist, albeit far from universally. Some people find it possible to buy things for less than they’re worth, at least on occasion. But doing so requires the cooperation of people who’re willing to sell things for less than they’re worth. What makes them do that? Why do mistakes occur? The new field of behavioral finance is all about looking into error stemming from emotion, psychology and cognitive limitations. If market prices were set by a “pricing czar” who was (1) tireless, (2) aware of all the facts, (3) proficient at analysis and (4) thoroughly rational and unemotional, assets could always be priced right based on the available information – never too low or too high. In the absence of that czar, if a market were populated by investors fitting that description, it, too, could price assets perfectly. That’s what the efficient marketers theorize, but it’s just not the case. Very few investors satisfy all four of the requirements listed above. And when they fail, particularly at number four – being rational and unemotional – it seems they all err in the same direction at the same time. That’s the reason for the herd behavior that’s behind bubbles and crashes, the biggest of all investment mistakes. According to the efficient market hypothesis, people study assets, assess their value and thereby decide whether to buy or sell. Given its current value and the outlook for change in that value, each asset’s current price implies a prospective return and risk level. Market participants engage
2012 年橡树资本管理有限合伙公司
2012 Oaktree Capital Management, L.P.
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在一个持续、即时竞价的拍卖机制中,市场价格不断更新。其目标是设定价格,使得每项资产的潜在回报与风险之间的关系——即其预期风险调整后回报——相对于所有其他资产而言是公平的。
低效率——即错误定价——表现为一项资产提供高于另一项资产的风险调整后回报。例如,A 和 B 看似风险相当,但 A 可能看起来提供比 B 更高的回报。在这种情况下,A 过于便宜,人们会卖出 B(压低其价格,抬高其潜在回报,降低其风险)并买入 A(抬高其价格,压低其潜在回报,增加其风险),直到两者的风险调整后回报趋于一致。这种状态被称为“均衡”。
功能健全的市场,其职责之一就是消除超额盈利机会。因此,市场参与者希望卖出定价过高的资产,买入定价过低的资产。只是他们做不到始终如一。
多数投资错误可归结为未能买入便宜的资产(或买入得不够多),也未能卖出昂贵的资产。人们为何会如此失误?以下仅列举几方面原因:
in a continuous, instantaneous auction through which market prices are updated. The goal is to set prices such that the relationship between each asset’s potential return and risk – that is, its prospective risk-adjusted return – is fair relative to all other assets. Inefficiencies – mispricings – are instances when one asset offers a higher risk-adjusted return than another. For example, A and B might seem equally risky, but A might appear to offer a higher return than B. In that case, A is too cheap, and people will sell B (lowering its price, raising its potential return and reducing its risk) and buy A (raising its price, lowering its potential return and increasing its risk) until the risk-adjusted returns of the two are in line. That condition is called “equilibrium.” It’s one of the jobs of a functioning market to eliminate opportunities for extraordinary profitability. Thus market participants want to sell overpriced assets and buy underpriced assets. They just don’t do so consistently. Most investment error can be distilled to the failure to buy the things that are cheap (or to buy enough of them) and to sell the things that are dear. Why do people fail in that way? Here are just a few reasons:
偏见或思维封闭——理论上,投资者会将资金转向任何便宜的东西,从而纠正定价错误。但在 1978 年,大多数投资者不会购买 B 级债券——无论价格如何——因为这样做被视为投机且不审慎。1999 年,大多数投资者也拒绝购买价值型股票——同样无论价格如何——因为他们认为这些股票缺乏科技股那种改变世界的潜力。诸如此类的偏见阻碍了估值差距的弥合。
Bias or closed-mindedness – In theory, investors will shift their capital to anything that’s cheap, correcting pricing mistakes. But in 1978, most investors wouldn’t buy B-rated bonds – at any price – because doing so was considered speculative and imprudent. In 1999, most investors refused to buy value stocks – also at any price – because they were deemed to lack the world-changing potential of technology stocks. Prejudices like these prevent valuation disparities from being closed.
资本刚性——理论上,投资者会把资金从高价资产挪向廉价资产。但有时,投资者被迫在市场上买入,即便毫无便宜货可捡,或被迫以跳楼价卖出。2000 年,风险投资领域“钱太多,盯着太少的项目追”。2008 年,收到追加保证金通知的 CLO(贷款抵押债券)别无选择,只能按破产价抛售贷款。这类刚性会制造错误定价。
Capital rigidity – In theory, investors will move capital out of high-priced assets and into cheap ones. But sometimes, investors are condemned to buy in a market even though there are no bargains or to sell even at giveaway prices. In 2000, in venture capital, there was “too much money chasing too few deals.” In 2008, CLOs receiving margin calls had no choice but to sell loans at bankruptcy prices. Rigidities like these create mispricings.
心理层面的过度——理论上,投资者会在资产因泡沫变得过于昂贵时卖出,或在崩盘时因资产足够便宜而买入。但实际操作中,投资者并非都这般冷血。他们可能因乐观压过怀疑、或贪婪盖过恐惧的不合理过度而未能卖出。贪婪、恐惧、嫉妒和傲慢这类心理力量,会让错误定价得不到纠正……或变得愈发严重。
Psychological excesses – In theory, investors will sell assets when they get too rich in a bubble or buy assets when they get cheap enough in a crash. But in practice, investors aren’t all that cold-blooded. They can fail to sell, for example, because of an unwarranted excess of optimism over skepticism, or an excess of greed over fear. Psychological forces like greed, fear, envy and hubris permit mispricings to go uncorrected . . . or become more so.
从众行为——理论上,市场参与者愿意在资产价格偏离合理范围时买入或卖出。但有时,无论价格如何,某种资产的买家多过卖家(或反之)。这种情况之所以发生,是因为大多数投资者无法脱离群体,尤其是在群体的行为短期内正获得回报之时。
Herd behavior – In theory, market participants are willing to buy or sell an asset if its price gets out of line. But sometimes there are more buyers for something than sellers (or vice versa), regardless of price. This occurs because of most investors’ inability to diverge from the pack, especially when the behavior of the pack is being rewarded in the short run.
2012 年橡树资本管理公司
2012 Oaktree Capital Management, L.P.
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以上内容在很大程度上印证了尤吉·贝拉的一句话:“理论上,理论与实践之间没有差别。但在实践中,差别是存在的。”
理论对这股力量的影响毫无对策。理论假设投资者是冷静、不感情用事且客观的,并且总是愿意用便宜的资产替换昂贵的资产。但在实践中,一个资产被错误定价的原因数不胜数——无论是在绝对意义上还是相对于其他资产——而且这种错误定价可能持续数月甚至数年。这些都是市场犯下的错误,而卓越的投资记录往往属于那些能够持续利用这些错误的投资者。
The foregoing goes a long way to support Yogi Berra’s observation that “In theory there is no difference between theory and practice. In practice there is.” Theory has no answer for the impact of these forces. Theory assumes investors are clinical, unemotional and objective, and always willing to substitute a cheap asset for a dear one. In practice, there are numerous reasons why one asset can be priced wrong – in the absolute or relative to others – and stay that way for months or years. Those are mistakes, and superior investment records belong to investors who take advantage of them consistently.
一个典型案例
布鲁斯·卡什(Bruce Karsh)和他的不良债务团队,在超过 23 年的时间里,年平均回报率在扣除费用前约为 23%,扣除费用后约为 18%,而且全程没有使用任何借入资金。他们的十八只基金全部盈利,亏损的年份相当罕见。我认为这一业绩堪称异乎寻常。按理说,你根本不可能在这么长的时间里取得这样的回报,尤其是还不借助杠杆。除了投资技巧之外,是什么让这一切成为可能?
A Case In Point Bruce Karsh and his distressed debt team have averaged returns of roughly 23% per year before fees and 18% after fees for more than 23 years without any use of borrowed capital. All eighteen of their funds have been profitable, and money-losing years have been quite scarce. I consider this record nothing short of aberrant. You’re simply not supposed to be able to make that kind of return for that long, and especially without the use of leverage. Investing skill aside, what made it possible?
难道是因为它叫“不良债务”吗?这不是理由;名称里可什么都没有。
Is it because it’s called “distressed debt”? That can’t be it; there’s nothing in a name.
是因为困境债务是一座尚未被发掘的市场金矿吗?恐怕也不是。1988 年我们募集第一只基金时,困境债务或许确实鲜为人知、不受待见。但时至今日,听说过困境债务的机构投资者应当不在少数,这早已不是秘密。
Is it because distressed debt is an undiscovered market niche? That can’t be it either; distressed debt may have been little-known and under-appreciated when we raised our first fund in 1988. But there can’t be many institutional investors who haven’t heard of distressed debt by now; certainly the secret’s out.
难道是因为人们不愿踏入违约与破产的肮脏世界?这在 20 世纪 80 年代或许如此,但如今,大多数投资者为了赚钱,什么都愿意干。
Can it be because people are unwilling to venture into the sordid world of default and bankruptcy? That might have been the case in the 1980s, but today most investors will do anything to make a buck.
那么,原因何在?我认为很大程度上源于错误。
在四月的伦敦客户会议上,我听着我们不良债务基金的联席投资组合经理鲍勃·奥利里这样描述他团队的工作:“我们的业务往往是对有缺陷的承保假设的审视。”换句话说,从别人的错误中获利正是他们存在的理由。
听到鲍勃这么说,我立刻有了写这份备忘录的灵感。主动型投资者只有在能够识别并利用他人所犯错误的情况下,才能实现超越平均水平的业绩。我们不良债务基金所投资的机会就是一个鲜明的例子。这些错误又是如何产生的呢?
So, then, why? I think it’s largely a matter of mistakes. At our London client conference in April, I listened as Bob O’Leary, a co-portfolio manager of our distressed debt funds, described his group’s work as follows: “Our business is often an examination of flawed underwriting assumptions.” In other words, it’s their raison d’être to profit from the mistakes of others. Hearing Bob put it that way gave me the immediate inspiration for this memo. The active investor only achieves above average performance to the extent that he can identify and act on mistakes others make. The opportunities invested in by our distressed debt funds are a glaring example. What’s the process through which the mistakes arise?
公司管理层的分析,或是潜在收购方的尽职调查,往往会低估企业未来将承受的压力。
The analysis performed by a company’s management, or the due diligence performed by a prospective acquirer, understates the stresses to which a business will be subjected
2012 年,橡树资本管理有限合伙企业。
2012 Oaktree Capital Management, L.P.
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并且/或者高估了自身抵御这些风险的能力。用鲍勃的话说,他们采用了过于乐观的承保假设,尤其是在市场景气时期。
and/or overstates its ability to withstand them. Using Bob’s terminology, they employ overly optimistic underwriting assumptions, particularly in good times.
结果就是,债务堆积如山,一旦形势转差,公司便会发现这些债务超出了自己的偿付能力。
As a result, debt is piled on that turns out to be more than the company can service when things turn down.
就像企业和收购方在好年景里常常过于乐观一样,债权人往往在坏年景里变得过分悲观。结果,他们愿意以夸大负面因素、因而偏低的价格出售财务困境公司的债务,这让我们有机会以不相称的低风险获取超额回报。
Just as companies and acquirers are often too optimistic in good times, debt holders tend to become too pessimistic in bad times. As a result, they become willing to sell the debt of financially distressed companies at prices that overstate the negatives and thus are too low, giving us the potential for superior returns with less-than-commensurate risk.
这三者都是不良债务投资取得成功的基石。
All three of these are foundational elements for success in distressed debt investing.
前两项因素为高回报的潜在机会创造了条件。如果没有人低估风险,进而让资本结构背负过多债务,那么违约和破产就不会那么多见。我们称这类放贷决策为“不明智的信贷扩张”,或者换个说法,“为篝火添柴”。
The first two contribute to the creation of high-potential-return situations. If no one underestimated risk and thus overloaded capital structures with debt, there wouldn’t be many defaults and bankruptcies. We call these lending decisions “the unwise extension of credit” or, alternatively, “stacking wood for the bonfire.”
如果没有人因为负面发展和可怕前景而恐慌,从而以过低价格抛售,那就没有理由指望困境债务能带来比任何其他投资更高的风险调整后回报。
And if no one panicked in response to negative developments and scary prospects, and thus sold out too cheaply, there would be no reason to expect higher riskadjusted returns from distressed debt than from anything else.
商业和投资领域里许多最大的错误都与周期有关。人们把上升趋势和下跌趋势无限外推,而真相是趋势通常会自我修正:多数事物不会永远向好或永远走差,而是回归均值。一个趋势持续的时间越长——让它看起来越像永久——往往越意味着它逆转的时刻近了。而上升趋势持续得越久,大多数人就变得越乐观、越能承受风险、越激进……恰在他们应该转向谨慎的时候。
举个例子,当经济繁荣、利润上涨时,人们会断定公司应该扩张业务、进行收购、承担更多债务。同样的看多情绪让债务提供者以更低的利率和更宽松的条款,把更大笔的钱借给更弱的借款人。于是,周期成为错误的大本营,而顺周期行为是最大的资本毁灭者之一。
这里的要点在于,不良债务投资的一大优势在于它天然带着一种反错误的商业模式。不良债务投资者……
Many of the biggest mistakes made in the business and investment worlds have to do with cycles. People extrapolate uptrends and downtrends into eternity, whereas the truth is that trends usually correct: rather than go well or poorly forever, most things regress to the mean. The longer a trend has gone on – making it appear more permanent – the more likely it usually is that the time for it to reverse is near. And the longer an uptrend goes on, the more optimistic, risktolerant and aggressive most people become . . . just as they should be turning more cautious. So, for example, when the economy is thriving and profits are rising, people conclude that company operations should be expanded, acquisitions should be undertaken, and more debt can be borne. That same bullishness causes providers of debt to bestow larger amounts of money on weaker borrowers, at lower interest rates and with looser covenants. Thus cycles are big sources of error, and pro-cyclical behavior is one of the biggest destroyers of capital. The point here is that one of distressed debt investing’s great advantages is that it embodies an anti-error business model. Distressed debt investors . . .
……我们几乎从不投资那种一切顺风顺水、投资者趋之若鹜的公司;天底下不存在一家财务陷入困境、却人见人爱的公司。
. . . almost never invest in companies where everything’s going well and investors are enthralled; there’s no such thing as a financially distressed company that everyone loves;
按定义,我们很少在重大问题出现之前就投资,希望这意味着袋子里剩下的负面意外更少了;
. . . by definition rarely invest before the emergence of significant problems, hopefully meaning fewer negative surprises are left in the bag;
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……我们的生意,就是大幅折价买进债务,买家往往是迫于压力或急于脱手的卖家。“按面值买困境债务”本身就是个矛盾的说法。至少在理论上,困境债务投资者是捡便宜的人,价格越跌他们越来劲……跟其他许多投资者正好相反,人家是越涨越追。
. . . are in business to buy debt at significant discounts, often from forced or highly motivated sellers. “Distressed debt at par” is an oxymoron and, at least in theory, distressed debt investors are bargain hunters whose ardor rises as prices fall . . . not the reverse like so many other investors.
并不是说不良债务投资者不会犯错;只是他们投资活动的性质本身就降低了犯错的概率。任何能减少投资者出错机会的因素——哪怕是一种非自愿的安全机制——都对他有利。
不良债务,从定义上讲,是一个具备以下特征的领域:
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It’s not that distressed debt investors can’t make mistakes; just that their likelihood of doing so is reduced by the very nature of their investment activity. Anything that decreases an investor’s chance of erring – even an involuntary safety mechanism – works to his advantage. Distressed debt is, by definition, an area where:
借款人和贷款人犯下了严重错误,
其中至少一些错误已经暴露,而伴随经济下行而来的压力、不快和不确定性,往往让债务持有人
在错误的时间和价格卖出。
borrowers and lenders have made grave mistakes, at least some of those mistakes have come to light, and the stress, unpleasantness and uncertainty that attend a downturn often make debt holders sell out at the wrong time and price.
换句话说,这是一个消极情绪和错误被固化、放大并加剧的领域。而最能让一项资产变得过于廉价的,莫过于极度悲观的心理。
当我们募集新基金时,投资者常常会问,人们是否已经变得明智,不再犯这些错误。迄今为止,答案是否定的。事实上,没有任何理由相信有一条学习曲线在发挥作用,人们毫无进步。证据何在?2005 年至 2007 年间积累、并在 2008 年危机中集中爆发的困境债务机会,是我们所遇到过的最好的机会之一,毫无疑问也是数量最多的。
In other words, it’s an area where negativism and error are crystallized, maximized and magnified. And nothing is more likely to make an asset too cheap than excessively negative psychology. When we’re out raising a new fund, investors often ask whether people have wised up such that they’ll no longer make these mistakes. Thus far the answer has been no, and in fact there’s no reason to believe there’s been any progress at all up the learning curve. The proof? The distressed debt opportunities that built up in 2005-07 and flowered in the crisis of 2008 were some of the best we’ve ever encountered, and certainly the most plentiful.
一个经典错误
我想借这次机会谈谈我特别钟爱的一个想法。投资其实只有一件事:选择持有哪些资产,以便在未来获利。因此,无论如何都绕不开对未来做出判断。
决定要为哪种未来做准备,你需要两样东西:(a)对可能发生之事的一个看法,(b)对你这个看法正确概率的一个判断。人人都知道前者,但我觉得真正思考后者的人相对很少。
简而言之,大多数人相信自己的看法。“他们当然相信,”你可能会说。“要是对自己的看法没有信心,他们就不会持有这些看法了。”这正是问题所在。人人都有权持有自己的看法。但橡树资本最喜欢的一句格言是:“持有看法是一回事,按它一定正确去行动是另一回事。”
显然,我们之所以有这些看法,是因为我们相信它们。(我们很少听到有人说“这是我的想法,但我很可能错了。”)但同样显而易见的是,我们对某些看法的信任程度高于另一些。判断正确的概率,
One Classic Mistake I want to take this occasion to touch on a favorite thought of mine. Investing consists of just one thing: choosing which assets to hold in order to profit in the future. Thus there’s no getting away from the need to make decisions concerning the future. In deciding which future to prepare for, you need two things: (a) an opinion about what’s likely to happen and (b) a view on the probability that your opinion is right. Everyone knows about the former, but I think relatively few think about the latter. In short, most people believe in their opinions. “Of course they do,” you might say. “If they didn’t have faith in their opinions, they wouldn’t hold them.” And that’s the point. Everyone’s entitled to his or her opinion. But one of our favorite sayings around Oaktree states that “it’s one thing to have an opinion, and something very different to act as if it’s right.” Clearly, our opinions are our opinions because we believe them. (We rarely hear anyone say “Here’s what I think, and I’m probably wrong.”) But just as clearly, we believe (or should believe) more in some of our opinions than others. The probability of being right about the
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明天加利福尼亚的天气、某 B 级债券发行人的偿付能力,以及希腊三年后是否仍是欧盟成员,这三件事的不确定性各不相同。对此,恐怕没人会提出异议。
既然如此,我们对每项预测所赋予的信任程度——以及基于这种信任采取的行动——也应当有所区别。然而,在我看来,大多数相信预测的人,先是形成自己的观点,然后以同等的信心去行动。这正是投资错误的最大根源之一。
承认自己不知道某些事,完全没问题。说自己对可能发生的事有个看法,但不确定自己是否正确,也没问题。这种情况下,你很可能会收敛自己的行动,即便最终证明你错了,也能全身而退。正如马克·吐温所言:“让你惹上麻烦的不是你不知道的事,而是你确信不疑却根本不是那么回事的事。”财政部长罗伯特·鲁宾在 1999 年宾夕法尼亚大学毕业典礼上也说过:“……理解确定性与可能性之间的区别,可能会带来天壤之别。”在没有过度自信的情况下,预测错误就不太可能成为致命伤。
我以前提到过,每当我正需要一句贴切的引语用于正在起草的备忘录时,总能碰巧遇到。因此,本节结尾,我想引用亚瑟·安瓦尔 5 月 29 日“独家通讯”中的一段话:
……虽然人人都深知自己会犯错,但很少有人……承认这样一个假设:自己深信不疑的某个观点,可能就是他们承认自己难免会犯的那种错误的例子。(约翰·斯图尔特·密尔,《论自由》,1859 年)
换言之,几乎所有人都接受自己的观点可能是错的……只不过这次不算。
weather tomorrow in California, a B-rated bond issuer paying its debts, and Greece being part of the European Union in three years is different in each case. Few people would take issue with that. If that’s true, the reliance we place on each prediction – and the action we take in that reliance – should vary. Yet, as I see it, most people who believe in forecasting come up with their opinions and then act on them with equal amounts of confidence. This is one of the greatest sources of investment error. It’s perfectly okay to say you don’t know something. It’s also okay to say you have a view on what might happen but you’re not so sure you’re right. In that case you’re likely to moderate your actions and emerge intact even if you turn out to be wrong. As Mark Twain put it, “It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.” Or as Treasury Secretary Robert Rubin told the 1999 graduating class of the University of Pennsylvania, “. . . understanding the difference between certainty and likelihood can make all the difference.” Forecasting error is much less likely to prove fatal in the absence of excess conviction. I’ve mentioned before the frequency with which I feel I come across a particularly apt quote just when I need it for a memo in the making. Thus I’ll close this section with one on the present subject from Yaser Anwar’s “Exclusivo Listserv” of May 29: . . . while every one well knows himself to be fallible, few . . . admit the supposition that any opinion, of which they feel very certain, may be one of the examples of the error to which they acknowledge themselves to be liable. (John Stuart Mill, “On Liberty,” 1859) In other words, nearly everyone accepts that his or her opinion might be wrong . . . just not this time.
新闻里的一桩大错
铺天盖地的报道正在讨论摩根大通为对冲信贷风险而损失数十亿美元的事。人们——尤其是政客们——抓住这笔损失,想证明杰米·戴蒙并不完美,银行监管也有漏洞。显然,摩根大通犯了个错——或者说不止一个。杰米·戴蒙把那笔对冲称为“设计拙劣”、“草率”以及“一个糟糕透顶、不可饶恕的错误”。在一个像对冲这样天生防守型的领域里,怎么会搞成这样——又怎么会造成如此巨大的损失?答案很简单:正如查理·芒格有次跟我谈投资时说的,“这事本就不该容易。谁觉得容易,谁就是傻瓜。”事实是,想每回都对,很难;对冲如此,投资也一样。
对冲听起来容易:你持有某样东西,于是卖出另一样来减轻投资表现不佳时的影响。但出错的方式却有千万种。
A Big Mistake in the News A vast amount of ink and airtime is being devoted to the subject of JP Morgan’s loss of multiple billions of dollars in its effort to hedge credit risk. People – and especially politicians – have seized on the loss to prove that Jamie Dimon isn’t perfect and bank regulation is inadequate. Clearly, JP Morgan made a mistake – or more than one. Jamie Dimon has described the hedge as “poorly designed,” “sloppy” and “a terrible, egregious mistake.” How could that be the case – and how could the result be such an enormous loss – in a field as inherently defensive as hedging? The answer’s simple: as Charlie Munger once said to me about investing, “It’s not supposed to be easy. Anyone who finds it easy is stupid.” The truth is, it’s hard to get it all right all the time, and that’s just as true of hedging as it is of investing. Hedging sounds easy: you own something, so you sell something to lessen the impact if your investment performs badly. But there are lots of ways to be wrong.
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用错误的东西来对冲。假设你持有 A 资产,但不想承受价格下跌的全部冲击。为什么不直接做空等量的 A 来对冲呢?答案是,持有 A 的同时做空 A,等同于什么都没持有。多头和空头头寸完全相互抵消,意味着你赚不到(也亏不了)一分钱。那不是对冲,那是抵消。
你想要的是平抑波动,而不是消除波动。所以你要做空一种你认为会与 A 联动、但又不完全同步的资产来对冲。希望在于,只要做得好,你消除的亏损风险就能多于牺牲的潜在收益。这就是“正套利”的含义。
买入福特股票,同时做空福特,毫无意义。所以也许你可以买入福特,做空通用汽车——你认为通用汽车表现会更差,涨幅小于福特或跌幅更大。但在两种不同资产上交易,本身就引入了不利背离的可能性。这叫作“基差风险”。简而言之,就是两种资产相对彼此的表现与你预期不符的风险。比如,福特下跌让你亏损,但通用汽车非但没有跟着下跌(那会在空头上给你带来对冲收益),反而因为某个利好而上涨,对冲跟你对着干,亏损雪上加霜。
Hedging with the wrong thing. Let’s say you own some A but don’t want to suffer the full impact if its price declines. Why not just sell short an equal amount of A to hedge? The answer is that owning A and simultaneously shorting A is the same as not owning anything. The long and short positions exactly offset each other, meaning you can’t make (or lose) any money. That’s not hedging, that’s negating. You want to dampen fluctuations, not eliminate them. So you hedge by selling short something you think will move in sympathy with A, but not exactly. The hope is that by doing it very well, you can eliminate more of the risk of loss than you do of the potential for gain. That’s the meaning of a “positive arbitrage.” Buying Ford stock and simultaneously shorting Ford accomplishes nothing. So perhaps you buy Ford and short General Motors, which you think will perform less well, going up less than Ford or down more. But by transacting in two different assets, you by definition introduce the possibility of an unfavorable divergence. This is called “basis risk.” In short, it’s the risk that the behavior of the two assets relative to each other will differ from what you expected. For example, Ford goes down, giving you a loss, but rather than go down in sympathy (which would give you an offsetting gain on the short position), a favorable development at GM makes it go up, compounding your loss as the hedge goes against you.
对冲数量不当。你持有 1000 股福特股票,并认为——鉴于它们可能出现的相对表现——你应该做空 500 股通用汽车股票来对冲风险。但结果却是,虽然两者走势相反,其相对波动幅度却不符合你的预期。于是,你要么对冲过度(对冲上的亏损超过持仓上的盈利),要么对冲不足(你寻求的保护未能实现)。要选定正确的“对冲比率”,并无万全之策。
Hedging in the wrong amount. You hold 1,000 Ford shares, and you think that – given their likely relative performance – you should short 500 GM shares to hedge your risk. But it turns out that while they move in opposite directions, their relative movements aren’t what you expected. Thus you either hedged too much (and thus you lose more on the hedge than you make on the underlying position) or you hedged too little (so the protection you sought doesn’t materialize). There’s no sure way to choose the right “hedge ratio.”
时间风险。持仓的两端可能按你预期运行,但时间点并非如此。因此,对冲可能在短期内失效,意味着对冲一端的损失可能先于另一端的收益出现,这种情况下,你会在一段时间内看起来完全错了。而如果你在那时被迫(因监管要求、追加保证金、资本撤出等原因)平仓,结果可能会相当糟糕。
Time risk. The two sides of the position may work as you expect, but not when you expect. Thus the hedge may fail to work in the short run, meaning the loss on one side of the hedge may occur before the gain on the other, in which case you’ll look flat-out wrong for a while. And if you’re required (by regulation, margin call, capital withdrawals, etc.) to close out the position at that point, the result could be quite negative.
流动性不足。如果条件或目标发生变化,您可能想调整或解除对冲。但市场在流动性方面的发展可能使调整或解除头寸的任一方或双方变得不可能。
Insufficient liquidity. If conditions or goals change, you might want to adjust or remove your hedge. But market developments in terms of liquidity might make it impossible to alter one or both sides of the position.
换句话说,对冲就是试图放弃一部分潜在收益,以换取潜在损失的更大减少。这是非常合理的做法,但不一定总能奏效。
在尝试建立有效的对冲时,几乎没有选择余地,只能对事物间的过往关系进行推断。如果这些关系能被指望保持稳定不变,那么对冲失败的风险就会很小。
In other words, hedging consists of an attempt to cede some potential gain in exchange for a greater reduction in potential loss. It’s a very reasonable course of action. But it doesn’t necessarily have to work. In attempting to set up effective hedges, there’s little choice but to extrapolate past relationships between things. If they could be counted on to persist unchanged, there’d be little risk of being
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在对冲资产的选择、对冲规模,或者对冲两边能否同步变动上,都可能判断失误。但和投资界的其他人一样,想对冲的人必须明白,过去成立的关系,未来未必靠得住。
另外,别忘了《纽约时报》5 月 26 日的报道:“没错,摩根亏大了——但正如米特·罗姆尼指出的,有人赢了。”这就是所有投资的底线。每笔投资通常都有对错两面。你会站在哪一边?
wrong about which asset to hedge with, how much to hedge, or whether the two sides of the hedge will move simultaneously. But, just like everyone else in the investment world, would-be hedgers must understand that relationships that held in the past can’t be counted on to hold in the future. And let’s remember, as The New York Times wrote on May 26, “Yes, Morgan lost big – but, as Mitt Romney has pointed out, someone else won.” That’s the bottom line on all investing. There’s generally a right side and a wrong side to every investment. Which will you be on?
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风险控制与其说是一种行动,不如说是一种心态。它主要源于对避免错误的重视,至少不亚于对成就卓越的追求。
风险控制——以及在投资中持续取得成功——要求我们明白一个道理:高回报并非随手可摘;它们必须由他人犯错,我们才能从中获益。从这个角度看,如果我们强迫自己去理解我们认为别人正在犯的错误及其原因,我们的表现会更好。
风险控制要求我们避开他人所屈服的分析和心理上的错误。
特别是,风险控制要求我们以承认自身可能犯错的态度,来节制对自己观点的自信。
归根结底,卓越的投资全关乎错误……以及成为从中获利的人,而非酿成错误的人。
Risk control isn’t an action so much as it is a mindset. It stems largely from putting at least as much emphasis on avoiding mistakes as on doing great things. Risk control – and consistent success in investing – requires an understanding of the fact that high returns don’t just come along for the picking; others must create them for us by making mistakes. And looked at that way, we’ll do a better job if we force ourselves to understand the mistake we think is being made, and why. Risk control requires that we avoid the analytical and psychological errors to which others succumb. In particular, risk control requires that we temper our belief in our opinions with acceptance of our fallibility. In the end, superior investing is all about mistakes . . . and about being the person who profits from them, not the one who commits them.
June 20, 2012
June 20, 2012
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