预备声明——众议院监督与政府改革委员会:对冲基金与金融市场

2008 · 证词 · 原文约 3805 词
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乔治·索罗斯在美国众议院监督和政府改革委员会的证词 2008 年 11 月 13 日 感谢您,主席先生,以及各位委员会成员。

STATEMENT OF GEORGE SOROS BEFORE THE U.S. HOUSE OF REPRESENTATIVES COMMITTEEE ON OVERSIGHT AND GOVERNMENT REFORM NOVEMBER 13, 2008 Thank you Mr. Chairman and members of the Committee.

当前这场金融危机的显著特征是,它并非由某个外部冲击引发——比如欧佩克提高油价,或某个国家或金融机构违约。这场危机是金融体系自己制造的。缺陷内生于体系本身——这一事实与主流理论相矛盾。主流理论认为:金融市场趋向均衡,偏离要么随机发生,要么由市场难以适应的突发外部事件造成。这场危机的严重程度和波及范围提供了令人信服的证据,表明这套主流理论,以及与之配套的市场监管思路,存在根本性错误。要理解已经发生的一切,并为避免未来再出现如此灾难性的危机而采取行动,我们需要一套关于市场如何运作的新思维方式。

The salient feature of the current financial crisis is that it was not caused by some external shock like OPEC raising the price of oil or a particular country or financial institution defaulting. The crisis was generated by the financial system itself. This fact-that the defect was inherent in the system-eontradicts the prevailing theory, which holds that financial markets tend toward equilibrium and that deviations from the equilibrium either occur in a random manner or are caused by some sudden external event to which markets have difficulty adjusting. The severity and amplitude of the crisis provides convincing evidence that there is something fundamentally wrong with this prevailing theory and with the approach to market regulation that has gone with it. To understand what has happened, and what should be done to avoid such a catastrophic crisis in the future, will require a new way of thinking about how markets work.

回顾这场危机在过去十八个月的演变过程,直接原因要追溯到房地产泡沫——更准确地说,是次贷市场的泛滥成灾。房价以两位数涨幅持续的时间越久,贷款操作就越松懈。到最后,人们能以零首付借到房价全额(当时房价已被吹高),借的还是按套内面积虚估的价格。业内人士把次贷贷款称作“忍者贷款”——不问收入、不问工作、不问任何问题。

Consider how the crisis has unfolded over the past eighteen months. The proximate cause is to be found in the housing bubble or more exactly in the excesses of the subprime mortgage market. The longer a double-digit rise in house prices lasted, the more lax the lending practices became. In the end, people could borrow 100 percent of inflated house prices with no money down. Insiders referred to subprime loans as ninja loans-no income, no job, no questions asked.

2006 年房价见顶,2007 年 3 月左右次贷机构开始宣告破产,这些过度行为就变得显而易见。2007 年 8 月,问题升级为危机。美联储和其他金融当局原本以为次贷危机只是一个孤立现象,可能造成约 1000 亿美元的损失。结果,危机以惊人的速度蔓延到其他市场。一些高杠杆的对冲基金倒闭,一些监管宽松的金融机构也宣布破产。

The excesses became evident after house prices peaked in 2006 and subprime mortgage lenders began declaring bankruptcy around March 2007. The problems reached crisis proportions in August 2007. The Federal Reserve and other financial authorities had believed that the subprime crisis was an isolated phenomenon that might cause losses of around $100 billion. Instead, the crisis spread with amazing rapidity to other markets. Some highly leveraged hedge funds collapsed and some lightly regulated financial institutions declared bankruptcy.

许多金融机构的信用可靠性遭到怀疑,银行间借贷陷入瘫痪。紧接着,各种晦涩难懂的信用市场——从债务抵押债券(CDO)到拍卖利率市政债券——一个接一个地崩溃。在经历了相对平静和部分复苏的阶段后,危机在 2008 年 1 月因法国兴业银行的一名流氓交易员而再次爆发;4 月,伴随贝尔斯登的倒闭;随后在 7 月,洛杉矶地区最大的储蓄银行 IndyMac Bank 被接管,成为美国历史上第四大银行倒闭案。最严重的冲击发生在 9 月,雷曼兄弟的无序破产导致其发行的商业票据(例如短期无担保本票)持有者血本无归。

Confidence in the creditworthiness of many financial institutions was shaken and interbank lending was disrupted. In quick succession, a variety of esoteric credit marketsranging from collateralized debt obligations [CDOs] to auction-rated municipal bonds-broke down one after another. After periods of relative calm and partial recovery, crisis episodes recurred in January 2008, precipitated by a rogue trader at Societe Generale; in April, associated with the demise of Bear Stearns; and then in July, when IndyMac Bank, the largest savings bank in the Los Angeles area, went into receivership, becoming the fourth-largest bank failure in US history. The deepest fall of all came in September, caused by the disorderly bankruptcy of Lehman Brothers in which holders of commercial paper-for example, short-term, unsecured promissory notes-issued by Lehman lost their money.

随后不可思议的一幕发生了:金融体系真的崩溃了。一家大型货币市场基金因持有雷曼兄弟发行的商业票据而“跌破净值”——即其资产价值跌至低于存入金额,打破了这类基金存款绝对安全且具有流动性的隐性承诺。这引发了货币市场基金的挤兑潮,基金纷纷停止购买商业票据。由于它们是商业票据的最大买家,这个市场随之瘫痪。商业票据的发行方被迫动用信贷额度,导致银行间借贷陷入停滞。信用利差——即高于无风险利率的风险溢价——飙升至史无前例的水平,最终股市也被恐慌情绪淹没。这一切发生在一周之内。

Then the inconceivable occurred: the financial system actually melted down. A large money market fund that had invested in commercial paper issued by Lehman Brothers "broke the buck," i.e., its asset value fell below the dollar amount deposited, breaking an implicit promise that deposits in such funds are totally safe and liquid. This started a run on money market funds and the funds stopped buying commercial paper. Since they were the largest buyers, the commercial paper market ceased to function. The issuers of commercial paper were forced to draw down their credit lines, bringing interbank lending to a standstill. Credit spreads-i.e., the risk premium over and above the riskless rate of interest-widened to unprecedented levels and eventually the stock market was also overwhelmed by panic. All this happened in the space of a week.

当金融系统心脏病发作时,抢救它比考虑道德风险——即救助陷入困境的金融机构会奖励并鼓励未来鲁莽行为的危险——更为优先,于是当局注入了越来越多的资金。美联储的资产负债表在几周内从 8000 亿美元膨胀到 1.8 万亿美元。当这还不够时,美国和欧洲的金融当局承诺不允许任何其他大型金融机构倒闭。

With the financial system in cardiac arrest, resuscitating it took precedence over considerations of moral hazard-i.e., the danger that coming to the rescue of a financial institution in difficulties would reward and encourage reckless behavior in the future-and the authorities injected ever larger quantities of money. The balance sheet of the Federal Reserve ballooned from $800 billion to $1,800 billion in a couple of weeks. When that was not enough, the American and European financial authorities committed themselves not to allow any other major financial institution to fail.

这些前所未有的措施已开始见效:银行间借贷恢复,伦敦银行间同业拆借利率(LIBOR)有所改善。金融危机显现出缓解迹象。但确保全球金融体系核心的银行不会倒闭,却引发了一场让当局措手不及的新危机:外围国家——无论是东欧、亚洲还是拉美——无法提供同样可信的担保,金融资本开始从外围逃向核心。所有货币兑美元和日元均告贬值,其中部分货币暴跌。大宗商品价格一落千丈,新兴市场利率飙升。信用违约保险的保费也跟着暴涨。对冲基金及其他杠杆投资者蒙受巨额损失,引发追加保证金通知和强制抛售,这股风潮也蔓延到了核心市场。

These unprecedented measures have begun to have an effect: interbank lending has resumed and the London Interbank Offered Rate (LIB OR) has improved. The financial crisis has showed signs of abating. But guaranteeing that the banks at the center of the global financial system will not fail has precipitated a new crisis that caught the authorities unawares: countries at the periphery, whether in Eastern Europe, Asia, or Latin America, could not offer similarly credible guarantees, and financial capital started fleeing from the periphery to the center. All currencies fell against the dollar and the yen, some of them precipitously. Commodity prices dropped like a stone and interest rates in emerging markets soared. So did premiums on insurance against credit default. Hedge funds and other leveraged investors suffered enormous losses, precipitating margin calls and forced selling that have also spread to markets at the center.

不幸的是,当局总是落后于形势。国际货币基金组织正在设立一个新的信贷机制,允许财务状况良好的外围国家无条件借款,额度最高可达其年度配额的 5 倍,但这不过是杯水车薪,为时已晚。要安抚市场,需要一笔大得多的资金池。就算顶层的外围国家得救了,底层国家又该怎么办?拯救国际金融体系的竞赛仍在进行中。即便最终成功,消费者、投资者和企业正在经历的创伤,其对全球经济活动的全面影响尚未显现。一场深度衰退已不可避免,经济萧条的可能性也不能排除。今年早些时候,我预测我们正面临自 1930 年代以来最严重的金融危机时,我并没有预料到情况会恶化到如此地步。

Unfortunately the authorities are always lagging behind events. The International Monetary Fund is establishing a new credit facility that allows financially sound periphery countries to borrow without any conditions up to five times their annual quota, but that is too little too late. A much larger pool of money is needed to reassure markets. And if the top tier of periphery countries is saved, what happens to the lower-tier countries? The race to save the international financial system is still ongoing. Even if it is successful, consumers, investors, and businesses are undergoing a traumatic experience whose full impact on global economic activity is yet to be felt. A deep recession is now inevitable and the possibility of a depression cannot be ruled out. When I predicted earlier this year that we were facing the worst financial crisis since the 1930s, I did not anticipate that conditions would deteriorate so badly.

要想理解这一连串非凡的事件,我们必须抛弃当前主流的市场行为理论。作为金融市场的解释框架,我提出一个替代范式,它在两个方面与现有理论不同。第一,金融市场并不能准确反映现实状况;它们呈现的图景总是带有某种偏向或扭曲。第二,市场参与者持有的扭曲观点会通过市场价格表达出来,而在特定条件下,这些观点又可能反过来影响所谓的“基本面”——也就是市场价格本该反映的那些东西。这种市场价格与基础现实之间的双向循环关系,我称之为反身性。

This remarkable sequence of events can be understood only if we abandon the prevailing theory of market behavior. As a way of explaining financial markets, I propose an alternative paradigm that differs from the current one in two respects. First, financial markets do not reflect prevailing conditions accurately; they provide a picture that is always biased or distorted in one way or another. Second, the distorted views held by market participants and expressed in market prices can, under certain circumstances, affect the so-called fundamentals that market prices are supposed to reflect. This two-way circular connection between market prices and the underlying reality I call reflexivity.

虽然双向关联始终存在,但只有在特殊情况下,它才会偶尔引发金融危机。通常市场会自行纠正错误,但偶尔会出现某种误解或误判,它设法强化现实中已有的趋势,并通过这种方式也强化了自身。这种自我强化过程可能将市场带入远离均衡的领域。除非有某种因素更早地打断这种反身性互动,否则它可能会持续下去,直到误解变得如此明显,以至于不得不被承认。当这种情况发生时,趋势变得不可持续,一旦逆转,自我强化过程便开始朝相反方向起作用,导致急剧下跌。

While the two-way connection is present at all times, it is only occasionally, and in special circumstances, that it gives rise to financial crises. Usually markets correct their own mistakes, but occasionally there is a misconception or misinterpretation that finds a way to reinforce a trend that is already present in reality and by doing so it also reinforces itself. Such self-reinforcing processes may carry markets into far-from-equilibrium territory. Unless something happens to abort the reflexive interaction sooner, it may persist until the misconception becomes so glaring that it has to be recognized as such. When that happens the trend becomes unsustainable and when it is reversed the self-reinforcing process starts working in the opposite direction, causing a sharp downward movement.

典型的繁荣—萧条周期在形态上是不对称的。繁荣缓慢发展,逐步加速;而一旦萧条来临,往往短促而猛烈。这种不对称性源于信贷在其中扮演的角色——随着价格上涨,同一笔抵押品可以支撑更大规模的信贷;上涨的价格还会催生乐观情绪,鼓励人们更多地使用杠杆(借钱投资)。在繁荣顶峰时,抵押品价值和杠杆程度同时达到峰值。一旦价格趋势逆转,参与者就会面临追加保证金的通知,而正如我们在 2008 年所见,抵押品的强制清算会导致下行方向出现灾难性的加速。

The typical sequence of boom and bust has an asymmetric shape. The boom develops slowly and accelerates gradually. The bust, when it occurs, tends to be short and sharp. The asymmetry is due to the role that credit plays. As prices rise, the same collateral can support a greater amount of credit. Rising prices also tend to generate optimism and encourage a greater use of leverage-borrowing for investment purposes. At the peak of the boom both the value of the collateral and the degree of leverage reach a peak. When the price trend is reversed participants are vulnerable to margin calls and, as we've seen in 2008, the forced liquidation of collateral leads to a catastrophic acceleration on the downside.

因此,泡沫有两个组成部分:一个在现实中占主导的趋势,以及一个与该趋势相关的错误观念。最典型也最常见的例子是房地产。趋势表现为贷款意愿增强和房价上涨。错误观念则认为,房地产的价值独立于贷款意愿。这种错误观念鼓励银行家在房价上涨、房贷违约减少时变得更加松懈。这就是房地产泡沫——包括最近的次贷泡沫——是如何诞生的。令人惊讶的是,尽管房地产泡沫破裂的历史悠久,这种错误观念却总能以各种伪装不断卷土重来。

Bubbles thus have two components: a trend that prevails in reality and a misconception relating to that trend. The simplest and most common example is to be found in real estate. The trend consists of an increased willingness to lend and a rise in prices. The misconception is that the value of the real estate is independent of the willingness to lend. That misconception encourages bankers to become more lax in their lending practices as prices rise and defaults on mortgage payments diminish. That is how real estate bubbles, including the recent housing bubble, are born. It is remarkable how the misconception continues to recur in various guises in spite of a long history of real estate bubbles bursting.

泡沫并非金融市场中反身性的唯一表现形式,却最为引人注目。泡沫总是伴随着信用的扩张与收缩,并往往带来灾难性后果。由于金融市场容易催生泡沫,而泡沫又会制造麻烦,金融市场便受到了金融当局的监管。在美国,这些机构包括美联储、财政部、证券交易委员会,以及许多其他机构。

Bubbles are not the only manifestations of reflexivity in financial markets, but they are the most spectacular. Bubbles always involve the expansion and contraction of credit and they tend to have catastrophic consequences. Since financial markets are prone to produce bubbles and bubbles cause trouble, financial markets have become regulated by the financial authorities. In the United States they include the Federal Reserve, the Treasury, the Securities and Exchange Commission, and many other agencies.

关键要认识到,监管者做决策时和市场主体一样依赖扭曲的现实——甚至有过之而无不及,因为监管者不仅是凡人,而且身处官僚体系还受政治影响。因此监管者与市场主体之间的互动也具有反身性特征。与偶尔发生的泡沫不同,监管者与市场之间的猫鼠游戏无时无刻不在进行。由此反身性持续发挥作用,忽视其影响是个错误。然而主流金融市场理论恰恰犯了这种错误,这个错误归根结底是当前危机如此严重的根源。

It is important to recognize that regulators base their decisions on a distorted view of reality just as much as market participants-perhaps even more so because regulators are not only human but also bureaucratic and subject to political influences. So the interplay between regulators and market participants is also reflexive in character. In contrast to bubbles, which occur only infrequently, the cat-and-mouse game between regulators and markets goes on continuously. As a consequence reflexivity is at work at all times and it is a mistake to ignore its influence. Yet that is exactly what the prevailing theory of financial markets has done and that mistake is ultimately responsible for the severity of the current crisis.

在我的著作《金融市场新范式》中,我主张当前危机与之前发生的各种金融危机存在本质区别。这一论断基于一个假设:美国房地产泡沫的爆发,充当了自 1980 年代以来不断膨胀的更大的“超级泡沫”的导火索。超级泡沫的潜在趋势,是信贷和杠杆的持续升级。自二战结束以来,信贷——无论是发放给消费者、投机者还是银行——其增长速度一直远超 GDP。但在 1980 年,当罗纳德·里根当选美国总统、玛格丽特·撒切尔出任英国首相时,一种错误观念占据了主导地位,在此强化下,信贷增速进一步加快,呈现出泡沫特征。

In my book The New Paradigm for Financial Markets,* I argue that the current crisis differs from the various financial crises that preceded it. I base that assertion on the hypothesis that the explosion of the US housing bubble acted as the detonator for a much larger "super-bubble" that has been developing since the 1980s. The underlying trend in the superbubble has been the ever-increasing use of credit and leverage. Credit-whether extended to consumers or speculators or banks-has been growing at a much faster rate than the GDP ever since the end of World War II. But the rate of growth accelerated and took on the characteristics of a bubble when it was reinforced by a misconception that became dominant in 1980 when Ronald Reagan became president and Margaret Thatcher was prime minister in the United Kingdom.

这种错误观念源于金融市场的主流理论,如前所述,该理论认为金融市场趋向均衡,其偏离是随机的,可归因于外部因素。这一理论被用来证明以下信条的合理性:应放任自利行为自由发展,市场应当去监管化。我将这种信条称为市场原教旨主义,并认为它运用了错误的逻辑。仅仅因为监管及所有其他形式的政府干预已被证明存在缺陷,并不能据此推断市场就是完美的。

The misconception is derived from the prevailing theory of financial markets, which, as mentioned earlier, holds that financial markets tend toward equilibrium and that deviations are random and can be attributed to external causes. This theory has been used to justify the belief that the pursuit of self-interest should be given free rein and markets should be deregulated. I call that belief market fundamentalism and claim that it employs false logic. Just because regulations and all other forms of governmental interventions have proven to be faulty, it does not follow that markets are perfect.

尽管市场原教旨主义建立在错误前提之上,但它很好地服务于金融资本所有者和经理人的利益。金融市场的全球化使得金融资本可以自由流动,并使单个国家难以对其征税或监管。金融交易的去监管化同样服务于金融资本经理人的利益;而创新自由则提升了金融企业的盈利能力。金融行业不断壮大,以至于其市值占到美国股市总市值的 25%,在其他一些国家占比甚至更高。

Although market fundamentalism is based on false premises, it has served well the interests of the owners and managers of financial capital. The globalization of financial markets allowed financial capital to move around freely and made it difficult for individual states to tax it or regulate it. Deregulation of financial transactions also served the interests of the managers of financial capital; and the freedom to innovate enhanced the profitability of financial enterprises. The financial industry grew to a point where it represented 25 percent of the stock market capitalization in the United States and an even higher percentage in some other countries.

由于市场原教旨主义建立在错误假设之上,1980 年代它被采纳为经济政策的指导原则,这必然会产生负面后果。事实上,自那时起我们经历了一系列金融危机,但不利后果主要落在处于全球金融体系外围的国家,而非核心国家。该体系由发达国家控制,尤其是美国,它在国际货币基金组织中享有否决权。

Since market fundamentalism is built on false assumptions, its adoption in the 1980s as the guiding principle of economic policy was bound to have negative consequences. Indeed, we have experienced a series of financial crises since then, but the adverse consequences were suffered principally by the countries that lie on the periphery of the global financial system, not by those at the center. The system is under the control of the developed countries, especially the United States, which enjoys veto rights in the International Monetary Fund.

每当危机威胁到美国的繁荣——例如 1980 年代末的储蓄和贷款危机,或 1998 年对冲基金长期资本管理公司的倒闭——当局就会干预,为倒闭的机构寻找合并对象,并在经济活动步伐受到威胁时提供货币和财政刺激。因此,周期性的危机实际上起到了成功测试的作用,既强化了信贷不断扩张的潜在趋势,也巩固了金融市场应放任自流这一盛行的错误观念。

Whenever a crisis endangered the prosperity of the United States-as for example the savings and loan crisis in the late 1980s, or the collapse of the hedge fund Long Term Capital Management in 1998-the authorities intervened, finding ways for the failing institutions to merge with others and providing monetary and fiscal stimulus when the pace of economic activity was endangered. Thus the periodic crises served, in effect, as successful tests that reinforced both the underlying trend of ever-greater credit expansion and the prevailing misconception that financial markets should be left to their own devices.

当然,使这些测试成功的是金融当局的干预,而非金融市场自我纠正过度行为的能力。但对投资者和政府而言,自我欺骗是方便的。与外围国家相比,美国相对的安全和稳定,使其能够吸收世界其他地区的储蓄,并维持经常账户赤字——该赤字在 2006 年第一季度达到峰值,接近国民生产总值的 7%。最终,连美联储和其他监管机构也屈服于市场原教旨主义意识形态,放弃了监管职责。他们本应更明智,因为正是他们的行动才使美国经济保持稳定。特别是艾伦·格林斯潘,他相信放任金融创新(如衍生品)的使用者自由发展,会带来巨大好处,以至于偶尔清理金融事故是值得付出的微小代价。在超级泡沫持续期间,他对放任政策的成本效益分析并非完全错误。只是到现在,他才被迫承认自己的论点存在缺陷。

It was of course the intervention of the financial authorities that made the tests successful, not the ability of financial markets to correct their own excesses. But it was convenient for investors and governments to deceive themselves. The relative safety and stability of the United States, compared to the countries at the periphery, allowed the United States to suck up the savings of the rest of the world and run a current account deficit that reached nearly 7 percent of GNP at its peak in the first quarter of 2006. Eventually even the Federal Reserve and other regulators succumbed to the market fundamentalist ideology and abdicated their responsihility to regulate. They ought to have known better since it was their actions that kept the United States economy on an even keel. Alan Greenspan, in particular, believed that giving users of financial innovations such as derivatives free rein brought such great benefits that having to clean up hchind the occasional financial mishap was a small price to pay. And his analysis of the costs and benefits of his permissive policies was not totally wrong while the super-bubble lasted. Only now has he been forced to acknowledge that there was a flaw in his argument.

金融工程涉及创建日益复杂的工具或衍生品,用于放大信贷和“管理”风险,以增加潜在利润。一堆字母汤般的合成金融工具被炮制出来:CDO、CDO 平方、CDS、ABX、CMBX 等等。这种工程达到了极高的复杂性,以至于监管者无法再计算风险,转而依赖金融机构自身的风险管理模型。评级公司在评级合成金融工具时也遵循了类似路径,从其泛滥中获得了可观的额外收入。那些晦涩难懂的金融工具和风险管理技术都基于一个错误前提:在市场行为中,偏离均值是随机发生的。但金融工程应用的增加,启动了一个繁荣与萧条的循环。因此,最终必然付出惨痛代价。起初,偶发的金融危机起到了成功测试的作用。但次贷危机扮演了不同的角色:它成为超级泡沫的顶点或反转点。

Financial engineering involved the creation of increasingly sophisticated instruments, or derivatives, for leveraging credit and "managing" risk in order to increase potential profit. An alphabet soup of synthetic financial instruments was concocted: CDOs, CD02s, CDSs, ABXs, CMBXs, etc. This engineering reached such heights of complexity that the regulators could no longer calculate the risks and came to rely on the risk management models of the financial institutions themselves. The rating companies followed a similar path in rating synthetic financial instruments, deriving considerable additional revenues from their proliferation. The esoteric financial instruments and risk management techniques were based on the false premise that, in the behavior of the market, deviations from the mean occur in a random fashion. But the increased use of financial engineering set in motion a process of boom and bust. So eventually there was hell to pay. At first the occasional financial crises served as successful tests. But the subprime crisis came to playa different role: it served as the culmination or reversal point of the super-bubble.

应当强调的是,对当前形势的这种解读并非必然源于我的繁荣-萧条模型。如果金融当局成功遏制了次贷危机——正如他们当时认为能做到的那样——它只会被视为又一次成功的测试,而非反转点。我曾三次发出“狼来了”的警告:第一次是 1987 年的《金融炼金术》,第二次是 1998 年的《全球资本主义危机》,现在是第三次。只有这次,狼真的来了。

It should be emphasized that this interpretation of the current situation does not necessarily follow from my model of boom and bust. Had the financial authorities succeeded in containing the subprime crisis-as they thought at the time they would be able to do-this would have been seen as just another successful test instead of the reversal point. I have cried wolf three times: first with The Alchemy of Finance in 1987, then with The Crisis of Global Capitalism in 1998, and now. Only now did the wolf arrive.

我基于反身性对金融市场的解释,在解释事件方面比预测事件更有效。它不如之前的理论那样雄心勃勃。它不像均衡理论那样声称能确定结果。它可以断言繁荣最终必然导致萧条,但无法确定繁荣的程度或持续时间。事实上,我们这些认识到存在房地产泡沫的人,曾预期它会更早破裂。如果它真的更早破裂,损害会小得多,超级泡沫也可能保持完整。大部分损害是由房地产繁荣最后两年发行的抵押贷款相关证券造成的。

My interpretation of financial markets based on reflexivity can explain events better than it can predict them. It is less ambitious than the previous theory. It does not claim to determine the outcome as equilibrium theory does. It can assert that a boom must eventually lead to a bust, but it cannot determine either the extent or the duration of a boom. Indeed, those of us who recognized that there was a housing bubble expected it to burst much sooner. Had it done so, the damage would have been much smaller and the super-bubble may have remained intact. Most of the damage was caused by mortgage-related securities issued in the last two years of the housing boom.

新范式并未声称能预测未来,这一事实解释了它为何直到现在才取得进展,但鉴于近期的经验,它已不能再被忽视。我们必须正视一个事实:反身性给金融市场引入了一个不确定性因素,而之前的理论并未将其考虑在内。该理论曾被用来建立风险计算的数学模型,并将抵押贷款组合及其他形式的债务转化为可交易证券。不确定性,按其定义,是无法量化的。对这些数学模型的过度依赖造成了难以估量的损害。

The fact that the new paradigm does not claim to predict the future explains why it did not make any headway until now, but in the light of recent experience it can no longer be ignored. We must come to terms with the fact that reflexivity introduces an element of uncertainty into financial markets that the previous theory didn't take into account. That theory was used to establish mathematical models for calculating risk and converting bundles of mortgages into tradable securities, as well as other forms of debt. Uncertainty by definition cannot be quantified. Excessive reliance on those mathematical models did untold harm.

新范式对金融市场监管具有深远影响。由于市场容易产生资产泡沫,美联储、财政部和美国证券交易委员会等监管机构必须承担起防止泡沫过度膨胀的责任。直到现在,金融当局都明确拒绝承担这一责任。

The new paradigm has far-reaching implications for the regulation of financial markets. Since they are prone to create asset bubbles, regulators such as the Fed, the Treasury, and the SEC must accept responsibility for preventing bubbles from growing too big. Until now financial authorities have explicitly rejected that responsibility.

无法阻止泡沫形成,但应有可能将其控制在可容忍的范围内。仅靠控制货币供应量是做不到这一点的。监管者还必须考虑信贷状况,因为货币和信贷并非同步变动。市场有其情绪和偏见,监管者必须加以平衡。这需要运用判断力,而监管者也是凡人,必然犯错。然而,他们的优势在于能从市场获得反馈,这应能使他们纠正错误。如果提高保证金和最低资本要求未能戳破泡沫,他们可以进一步收紧。但这个过程并非万无一失,因为市场也可能是错的。寻找最优均衡必须是一个永无止境的试错过程。

It is impossible to prevent bubbles from forming, but it should be possible to keep them within tolerable bounds. It cannot be done by controlling only the money supply. Regulators must also take into account credit conditions because money and credit do not move in lockstep. Markets have moods and biases and it falls to regulators to counterbalance them. That requires the use of judgment and since regulators are also human, they are bound to make mistakes. They have the advantage, however, of getting feedback from the market and that should enable them to correct their mistakes. If a tightening of margin and minimum capital requirements does not deflate a bubble, they can tighten them some more. But the process is not foolproof because markets can also be wrong. The search for the optimum equilibrium has to be a never-ending process of trial and error.

监管者与市场参与者之间的猫鼠游戏已在持续,但其真实性质尚未得到承认。艾伦·格林斯潘是利用其德尔斐式言论进行操纵的高手,但他并不承认自己的所作所为,反而假装只是被动的事实观察者。反身性一直是一个国家机密。这就是为什么在他的任期内超级泡沫能膨胀到如此地步。

The cat-and-mouse game between regulators and market participants is already ongoing, but its true nature has not yet been acknowledged. Alan Greenspan was a past master of manipulation with his Delphic utterances, but instead of acknowledging what he was doing he pretended that he was merely a passive observer of the facts. Reflexivity remained a state secret. That is why the super-bubble could develop so far during his tenure.

由于货币和信贷并非同步变动,资产泡沫不能单纯通过货币手段来控制,因此必须采用其他工具,或者更准确地说,重新激活它们,因为它们在 1950 年代和 1960 年代曾被积极使用。我指的是可变保证金要求和最低资本要求,其目的是控制市场参与者所能使用的杠杆率。中央银行过去甚至向银行发布指导,指示它们如何向特定经济部门分配贷款。在应对特定部门(如信息技术或房地产)的“非理性繁荣”时,这类指令可能优于货币政策等生硬工具。

Since money and credit do not move in lockstep and asset bubbles cannot be controlled purely by monetary means, additional tools must be employed, or more accurately reactivated, since they were in active use in the 1950s and 1960s. I refer to variable margin requirements and minimal capital requirements, which are meant to control the amount of leverage market participants can employ. Central banks even used to issue guidance to banks about how they should allocate loans to specific sectors of the economy. Such directives may be preferable to the blunt instruments of monetary policy in combating "irrational exuberance" in particular sectors, such as information technology or real estate.

我提到的那种复杂的金融工程,可能使保证金和资本要求的计算变得极其困难,甚至不可能。为了激活这些要求,金融工程本身也必须受到监管,新产品在投入使用前必须由相应机构注册和批准。这类监管应成为新奥巴马政府的高度优先事项。这一点尤为必要,因为金融工程往往旨在规避监管。

Sophisticated financial engineering of the kind I have mentioned can render the calculation of margin and capital requirements extremely difficult if not impossible. In order to activate such requirements, financial engineering must also be regulated and new products must be registered and approved by the appropriate authorities before they can be used. Such regulation should be a high priority of the new Obama administration. It is all the more necessary because financial engineering often aims at circumventing regulations.

以信用违约互换(CDS)为例,这类工具本意是为债券及其他债务违约风险提供保险,其价格反映了市场对该风险可能发生的感知程度。这些工具如同野草般疯长,因为相比持有或做空标的债券,它们所需的资本要少得多。最终其名义规模膨胀至超过 50 万亿美元,是标的债券的许多倍,相当于美国整个国债的五倍。然而,信用违约互换市场始终完全不受监管。保险公司 AIG 因出售作为保险形式的信用违约互换而损失惨重,不得不接受救助,迄今已让财政部付出 1260 亿美元的代价。尽管 CDS 市场或许最终能从其他许多市场已发生的崩盘中幸存下来,但一个不受监管、规模如此之大的市场的存在本身,就是增加整个金融体系风险的主要因素。

Take for example credit default swaps (CDSs), instruments intended to insure against the possibility of bonds and other forms of debt going into default, and whose price captures the perceived risk of such a possibility occurring. These instruments grew like Topsy because they required much less capital than owning or shorting the underlying bonds. Eventually they grew to more than $50 trillion in nominal size, which is a many-fold multiple of the underlying bonds and five times the entire US national debt. Yet the market in credit default swaps has remained entirely unregulated. AIG, the insurance company, lost a fortune selling credit default swaps as a form of insurance and had to be bailed out, costing the Treasury $126 billion so far. Although the CDS market may be eventually saved from the meltdown that has occurred in many other markets, the sheer existence of an unregulated market of this size has been a major factor in increasing risk throughout the entire financial system.

由于迄今为止使用的风险管理模型忽略了反身性固有的不确定性,信贷和杠杆的上限必须设定得远低于近段时间所能容忍的水平。这意味着整个金融行业的总体盈利能力将低于超级泡沫时期,一些依赖过度杠杆的业务模式将变得不经济。金融业占整体市值的比重已从 25% 降至 16%。这一比例不太可能恢复到接近此前的高位,实际上,它很可能会进一步走低。从某种意义上说,这可能被视为一次健康的调整,但那些正丢掉饭碗的人可不这么看。

Since the risk management models used until now ignored the uncertainties inherent in reflexivity, limits on credit and leverage will have to be set substantially lower than those that were tolerated in the recent past. This means that financial institutions in the aggregate will be less profitable than they have been during the super-bubble and some business models that depended on excessive leverage will become uneconomical. The financial industry has already dropped from 25 percent of total market capitalization to 16 percent. This ratio is unlikely to recover to anywhere near its previous high; indeed, it is likely to end lower. This may be considered a healthy adjustment, but not by those who are losing their jobs.

关于对冲基金,必须认识到它们也是已经破裂的泡沫中不可或缺的一部分。对冲基金的资本规模曾膨胀到约 2 万亿美元,这些资金有时控制着高达 10 万亿美元甚至更多的资产。但现在泡沫已经破裂,对冲基金将遭受重创。我猜测,它们管理的资金规模将缩水 50% 到 75%。在这次金融危机期间,许多对冲基金经理忘记了投资对冲基金的根本法则——在市场下行时保护投资者的本金。不幸的是,近年来对冲基金募集的大部分资金,都来自那些原本通常风格稳健的养老基金和捐赠基金,它们不过是追逐所谓的“阿尔法”收益罢了。

Regarding hedge funds, it has to be recognized that hedge funds were also an integral part of the bubble which now has burst. Hedge funds grew to approximately $2 trillion of capital which at times controlled as much as $10 trillion or more in assets. But the bubble has now burst and hedge funds will be decimated. I would guess that the amount of money they manage will shrink by between 50 and 75 percent. During the current financial crisis, many hedge fund managers forgot the cardinal rule of hedge fund investing which is to protect investor capital during down markets. It is unfortunate that much of the money raised by hedge funds in recent years has come from the typically staid pension funds and endowment funds in their pursuit of "alpha."

鉴于普通公众遭受了巨大损失,确实存在一个危险:过度的放松监管之后,接踵而至的将是惩罚性的重新监管。这将是令人遗憾的,因为监管很可能比市场机制更加漏洞百出。正如我所提到的,监管者不仅是凡人,而且带有官僚习气,容易受到游说和腐败的影响。希望本文概述的改革措施能先发制人,避免监管过度。

In view of the tremendous losses suffered by the general public, there is a real danger that excessive deregulation will be succeeded by punitive reregulation. That would be unfortunate because regulations are liable to be even more deficient than the market mechanism. As I have suggested, regulators are not only human but also bureaucratic and susceptible to lobbying and corruption. It is to be hoped that the reforms outlined here will preempt a regulatory overkill.

希望我的证词能帮助委员会理解这些问题,我会尽力回答各位提出的任何问题。* 《金融市场新范式:2008 年信贷危机及其启示》(PublicAffairs,2008 年)

I hope that my testimony has aided the Committee in understanding these issues, and I will do my best to answer any questions you may have. * The New Paradigm for Financial Markets: The Credit Crisis of2008 and What It Means (PublicAffairs, 2008).