Showing posts with label Policy. Show all posts
Showing posts with label Policy. Show all posts

Monday, September 27, 2010

Paul Volcker Invalidates Modern Portfolio Theory

US Federal Reserve ex-Chairman Paul Volcker, whose policies under President Carter in the later 1970s and early 1980s single-handedly stuffed the inflation genie back into its bottle, and laid the foundation for the world's longest period of uninterrupted growth, set aside his prepared remarks at a Federal Reserve of Chicago event yesterday and instead delivered a "blistering, off-the-cuff critique leveled at nearly every corner of the the US financial system", according to the Wall Street Journal. In addition to rants about "relentless corporate lobbying by banks and politicians to soften the rules" and candid remarks about how the "financial system is ... absolutely broken", Volcker had this to say about financial markets:
"Normal distribution curves - if I would submit to you - do not exist in financial markets. It's not that they are fat tails - they do not exist. I keep hearing about fat tails, and Jesus, it's only supposed to occur every 100 years, and it appears every 10 years!"

This statement is a startlingly frank denouncement of the very foundation of contemporary investment theory. The primary assumption of Modern Portfolio Theory, and its corollaries, the Efficient Markets Hypothesis, and the Black-Scholes Merton model, is that financial market returns conform to a normal distribution. If we acknowledge the possibility that financial market returns do not conform to a normal distribution, we must by extension reject the validity of MPT.

Readers might be familiar with this chart, which plots the distribution of actual monthly stock market returns from 1870 through 2009. Note the spikes on the curve far out to the left and right. If you look closely (or click to bring up a larger version of the chart), you can see the statistical likelihood of these monthly returns occurring if we assume returns ARE normally distributed. Note the month at the far left which, under MPT assumptions, would be expected to occur just once since the big bang - how unlucky for us that it happened to occur in our lifetime.

Source: Shiller (2009), Butler|Philbrick & Associates

Of course, this is not news to clients of Butler|Philbrick & Associates and readers of this blog. We have posted often about the fallacy of MPT and the normal distribution, and how this fallacy affects investors (see here, here, here, here, here...). However, Mr. Volcker's statement should inspire substantial anxiety among the 'Thundering Herd' of Advisors and Consultants to the world's wealthy, who allocate billions of dollars of pension and wealthy investor capital to funds, managers and strategies which depend entirely on the veracity of MPT.


If you have observed a gap between the actual growth experienced by your portfolio, and the growth you expected to see in your portfolio, we may have discovered the culprit. Here's a 'back-of-the-napkin' theory:


Source: Butler|Philbrick & Associates

Thursday, April 23, 2009

The Escherization of Bank Profits

Yep, even more bankster chicanery.

We knew that many of the banks have been taking advantage of the inscrutable fair value accounting rules by channelling reductions in the market values of their outstanding debt through income statements where they show up as earnings. If the value of outstanding liabilities declines while asset values are constant (under the revised fair value accounting rules introduced a few days ago), this can be recognized as an accounting gain.

This practice allows a bank to pad earnings on the basis that the risk implicit in its outstanding credit obligations has increased, likely due to the bank's deteriorating financial position. (All things equal, as interest rate spreads on a bond increase, the price of the bond (or debt) decreases). The mind-bending implication is that, should the bank's financial situation improve, spreads on its outstanding debt will narrow and the bank will have to book a loss.

Now we discover that, not only are the banks playing strange accounting games with the value of their outstanding liabilities, but many of the banks are actually booking profits from credit insurance written against their own debt! You just can't make this stuff up!

Apparently the CDSs are subject to fair value accounting even though they will ultimately mature with no value unless the company defaults on its own debt.

Don't worry if this didn't make any sense on first pass. It is the accounting equivalent of an M. C. Escher drawing.



Source: M.C. Escher via Wikipedia


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From Financial Times' Alphaville Blog:

Banking credit catch-22 in action?
Posted by Tracy Alloway on Apr 22 13:56.

On Monday we wrote about Citi's Q1 gains on credit value adjustments of its CDS.

We're still not sure whether this is an actual CDS position against itself. Citi's Q1statement has the following:

- A net $2.5 billion positive CVA on derivative positions, excluding monolines, mainly due to the widening of Citi's CDS spreads

- A net $30 million positive CVA of Citi's liabilities at fair value option

However, we do note this bit from Morgan Stanley's recently released Q1 results.

In fact, Morgan Stanley would have been profitable this quarter if not for the dramatic improvement in our credit spreads - which is a significant positive development, but had a near-term negative impact on our revenues.

There's a tiny bit more detail in the footnote of on the bank's $1.69bn of Q1 net revenue in Insitutional Securities.

(1) Results for the quarters ended Mar 31, 2008, Dec 31, 2008 and Mar 31, 2009 include positive / (negative) revenues of $1.8 billion, $(5.7) billion and $(1.5) billion, respectively, related to the movement in Morgan Stanley's credit spreads on certain long term debt.

The banking credit catch-22 in action? We wrote this on Monday in relation to Citi.

If the market thinks Citi is doing well, the bank's shares could rise, its CDS could tighten, its CVA gains could well reverse, hitting its earnings, and vice versa. If the market thinks it's doing badly, Citi's CVA gain will increase, but it could still possibly be in need of more capital.

Which today, turns into…

If the market thinks Morgan Stanley is doing well, the bank's shares could rise, its CDS could tighten, its CVA gains could well reverse, hitting its earnings…

This is something of a problem for financials and should serve to highlight the ephemeral nature of certain bank profits in general.

Holding to Account blogger Luca Pacioli (H/T reader JN) for instance, also points us in the direction of 2008 CVA gains from banks including Barclays, RBS, HSBC and Bank of America, totalling at least $13bn. In his words:

Together with Citi, that means approximately $17.9bn will have to be charged back to bank P&Ls. Or put another way - in the last few months, the above banks have reported $17.9bn of profit they probably will never actually realise (this is on top of the general MTM issues on illiquid assets).

Sunday, March 15, 2009

The Looting of America's Coffers

I am increasingly convinced that the looting of fiscal coffers by the international transactional class is one of the great defining issues of our time. I have observed this phenomenon with increasing frustration since the Bear Stearns intervention in early 2008. This type of looting is not new, of course.

We have become a society of looters. The transactional classes feel it is their noble right to perpetuate their status by looting the productive classes. This occurs in three ways:

1. The transfer of tax revenues to entities whose only productive effort is lobbying. This is nothing more than a form of graft and is the enemy of democratic society.

2. The incursion of sovereign debt, which is a tax on the productivity of future generations, in order to offset the natural loss in wealth of the current transactional classes as a result of capitalistic attrition. This looting occurs via 'bail-outs'. Whenever you hear the term 'bail-out' remember that this is a synonym for 'looting'.

3. The continuous creation of fiat money, which dilutes the purchasing power of savers via the hidden tax of inflation. The transactional classes protect themselves from this tax via the ownership of 'assets', the prices of which increase at a rate that exceeds the rate of inflation. It is the fear of asset price deflation that the transactional class fears most of all, and this fear is the motivation for looting.

Importantly, the transactional class is distinguished from the productive class in that the transactional class receives income from capital while the productive class receives income from productivity. Note that those who profit disproportionately from the productivity of others, such as a large fraction of corporate CEOs and other executives are also members of the transactional class, and are by definition 'looters'.

The recent announcement of $165 million in bonuses set aside for payment to executives of AIG provides the perfect example of a transfer of wealth from the productive class (taxpayers) to the transactional class (looters). AIG’s fourth-quarter loss of $61.7 billion was the biggest ever recorded for any U.S. company, and taxpayers are on the hook for several hundred billion dollars in 'bail-outs' to AIG.

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The Looting of America’s Coffers

By DAVID LEONHARDT

Sixteen years ago, two economists published a research paper with a delightfully simple title: “Looting.”

The economists were George Akerlof, who would later win a Nobel Prize, and Paul Romer, the renowned expert on economic growth. In the paper, they argued that several financial crises in the 1980s, like the Texas real estate bust, had been the result of private investors taking advantage of the government. The investors had borrowed huge amounts of money, made big profits when times were good and then left the government holding the bag for their eventual (and predictable) losses.
In a word, the investors looted. Someone trying to make an honest profit, Professors Akerlof and Romer said, would have operated in a completely different manner. The investors displayed a “total disregard for even the most basic principles of lending,” failing to verify standard information about their borrowers or, in some cases, even to ask for that information.

The investors “acted as if future losses were somebody else’s problem,” the economists wrote. “They were right.”

On Tuesday morning in Washington, Ben Bernanke, the Federal Reserve chairman, gave a speech that read like a sad coda to the “Looting” paper. Because the government is unwilling to let big, interconnected financial firms fail — and because people at those firms knew it — they engaged in what Mr. Bernanke called “excessive risk-taking.” To prevent such problems in the future, he called for tougher regulation.

Now, it would have been nice if the Fed had shown some of this regulatory zeal before the worst financial crisis since the Great Depression. But that day has passed. So people are rightly starting to think about building a new, less vulnerable financial system.

And “Looting” provides a really useful framework. The paper’s message is that the promise of government bailouts isn’t merely one aspect of the problem. It is the core problem.

Promised bailouts mean that anyone lending money to Wall Street — ranging from small-time savers like you and me to the Chinese government — doesn’t have to worry about losing that money. The United States Treasury (which, in the end, is also you and me) will cover the losses. In fact, it has to cover the losses, to prevent a cascade of worldwide losses and panic that would make today’s crisis look tame.

But the knowledge among lenders that their money will ultimately be returned, no matter what, clearly brings a terrible downside. It keeps the lenders from asking tough questions about how their money is being used. Looters — savings and loans and Texas developers in the 1980s; the American International Group, Citigroup, Fannie Mae and the rest in this decade — can then act as if their future losses are indeed somebody else’s problem.

Do you remember the mea culpa that Alan Greenspan, Mr. Bernanke’s predecessor, delivered on Capitol Hill last fall? He said that he was “in a state of shocked disbelief” that “the self-interest” of Wall Street bankers hadn’t prevented this mess.

He shouldn’t have been. The looting theory explains why his laissez-faire theory didn’t hold up. The bankers were acting in their self-interest, after all.

The term that’s used to describe this general problem, of course, is moral hazard. When people are protected from the consequences of risky behavior, they behave in a pretty risky fashion. Bankers can make long-shot investments, knowing that they will keep the profits if they succeed, while the taxpayers will cover the losses.

This form of moral hazard — when profits are privatized and losses are socialized — certainly played a role in creating the current mess. But when I spoke with Mr. Romer on Tuesday, he was careful to make a distinction between classic moral hazard and looting. It’s an important distinction.

With moral hazard, bankers are making real wagers. If those wagers pay off, the government has no role in the transaction. With looting, the government’s involvement is crucial to the whole enterprise.

Think about the so-called liars’ loans from recent years: like those Texas real estate loans from the 1980s, they never had a chance of paying off. Sure, they would deliver big profits for a while, so long as the bubble kept inflating. But when they inevitably imploded, the losses would overwhelm the gains. As Gretchen Morgenson has reported, Merrill Lynch’s losses from the last two years wiped out its profits from the previous decade.

What happened? Banks borrowed money from lenders around the world. The bankers then kept a big chunk of that money for themselves, calling it “management fees” or “performance bonuses.” Once the investments were exposed as hopeless, the lenders — ordinary savers, foreign countries, other banks, you name it — were repaid with government bailouts.

In effect, the bankers had siphoned off this bailout money in advance, years before the government had spent it.

I understand this chain of events sounds a bit like a conspiracy. And in some cases, it surely was. Some A.I.G. employees, to take one example, had to have understood what their credit derivative division in London was doing. But more innocent optimism probably played a role, too. The human mind has a tremendous ability to rationalize, and the possibility of making millions of dollars invites some hard-core rationalization.

Either way, the bottom line is the same: given an incentive to loot, Wall Street did so. “If you think of the financial system as a whole,” Mr. Romer said, “it actually has an incentive to trigger the rare occasions in which tens or hundreds of billions of dollars come flowing out of the Treasury.”

Unfortunately, we can’t very well stop the flow of that money now. The bankers have already walked away with their profits (though many more of them deserve a subpoena to a Congressional hearing room). Allowing A.I.G. to collapse, out of spite, could cause a financial shock bigger than the one that followed the collapse of Lehman Brothers. Modern economies can’t function without credit, which means the financial system needs to be bailed out.

But the future also requires the kind of overhaul that Mr. Bernanke has begun to sketch out. Firms will have to be monitored much more seriously than they were during the Greenspan era. They can’t be allowed to shop around for the regulatory agency that least understands what they’re doing. The biggest Wall Street paydays should be held in escrow until it’s clear they weren’t based on fictional profits.

Above all, as Mr. Romer says, the federal government needs the power and the will to take over a firm as soon as its potential losses exceed its assets. Anything short of that is an invitation to loot.

Mr. Bernanke actually took a step in this direction on Tuesday. He said the government “needs improved tools to allow the orderly resolution of a systemically important nonbank financial firm.” In layman’s terms, he was asking for a clearer legal path to nationalization.

At a time like this, when trust in financial markets is so scant, it may be hard to imagine that looting will ever be a problem again. But it will be. If we don’t get rid of the incentive to loot, the only question is what form the next round of looting will take.

Mr. Akerlof and Mr. Romer finished writing their paper in the early 1990s, when the economy was still suffering a hangover from the excesses of the 1980s. But Mr. Akerlof told Mr. Romer — a skeptical Mr. Romer, as he acknowledged with a laugh on Tuesday — that the next candidate for looting already seemed to be taking shape.

It was an obscure little market called credit derivatives.