No More Bull.

Michael Lewis, in the December issue of Portfolio, schools us necessarily on what went down with Wall Street. Here's a clip:

By the spring of 2005, FrontPoint was fairly convinced that something was very screwed up not merely in a handful of companies but in the financial underpinnings of the entire U.S. mortgage market. In 2000, there had been $130 billion in subprime mortgage lending, with $55 billion of that repackaged as mortgage bonds. But in 2005, there was $625 billion in subprime mortgage loans, $507 billion of which found its way into mortgage bonds. Eisman couldn’t understand who was making all these loans or why. He had a from-the-ground-up understanding of both the U.S. housing market and Wall Street. But he’d spent his life in the stock market, and it was clear that the stock market was, in this story, largely irrelevant. “What most people don’t realize is that the fixed-income world dwarfs the equity world,” he says. “The equity world is like a fucking zit compared with the bond market.”

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Here’s where financial technology became suddenly, urgently relevant. The typical mortgage bond was still structured in much the same way it had been when I worked at Salomon Brothers. The loans went into a trust that was designed to pay off its investors not all at once but according to their rankings. The investors in the top tranche, rated AAA, received the first payment from the trust and, because their investment was the least risky, received the lowest interest rate on their money. The investors who held the trusts’ BBB tranche got the last payments—and bore the brunt of the first defaults. Because they were taking the most risk, they received the highest return. Eisman wanted to bet that some subprime borrowers would default, causing the trust to suffer losses. The way to express this view was to short the BBB tranche. The trouble was that the BBB tranche was only a tiny slice of the deal.

But the scarcity of truly crappy subprime-mortgage bonds no longer mattered. The big Wall Street firms had just made it possible to short even the tiniest and most obscure subprime-mortgage-backed bond by creating, in effect, a market of side bets. Instead of shorting the actual BBB bond, you could now enter into an agreement for a credit-default swap with Deutsche Bank or Goldman Sachs. It cost money to make this side bet, but nothing like what it cost to short the stocks, and the upside was far greater.

The arrangement bore the same relation to actual finance as fantasy football bears to the N.F.L.


Hat tip to Angela.