The Big Short_ Inside the Doomsday Machine - Michael Lewis [16]
As early as 2004, if you looked at the numbers, you could clearly see the decline in lending standards. In Burry's view, standards had not just fallen but hit bottom. The bottom even had a name: the interest-only negative-amortizing adjustable-rate subprime mortgage. You, the home buyer, actually were given the option of paying nothing at all, and rolling whatever interest you owed the bank into a higher principal balance. It wasn't hard to see what sort of person might like to have such a loan: one with no income. What Burry couldn't understand was why a person who lent money would want to extend such a loan. "What you want to watch are the lenders, not the borrowers," he said. "The borrowers will always be willing to take a great deal for themselves. It's up to the lenders to show restraint, and when they lose it, watch out." By 2003 he knew that the borrowers had already lost it. By early 2005 he saw that lenders had, too.
A lot of hedge fund managers spent time chitchatting with their investors and treated their quarterly letters to them as a formality. Burry disliked talking to people face-to-face and thought of these letters as the single most important thing he did to let his investors know what he was up to. In his quarterly letters he coined a phrase to describe what he thought was happening: "the extension of credit by instrument." That is, a lot of people couldn't actually afford to pay their mortgages the old-fashioned way, and so the lenders were dreaming up new instruments to justify handing them new money. "It was a clear sign that lenders had lost it, constantly degrading their own standards to grow loan volumes," Burry said. He could see why they were doing this: They didn't keep the loans but sold them to Goldman Sachs and Morgan Stanley and Wells Fargo and the rest, which packaged them into bonds and sold them off. The end buyers of subprime mortgage, he assumed, were just "dumb money." He'd study up on them, too, but later.
He now had a tactical investment problem. The various floors, or tranches, of subprime mortgage bonds all had one thing in common: The bonds were impossible to sell short. To sell a stock or bond short, you needed to borrow it, and these tranches of mortgage bonds were tiny and impossible to find. You could buy them or not buy them, but you couldn't bet explicitly against them; the market for subprime mortgages simply had no place for people in it who took a dim view of them. You might know with certainty that the entire subprime mortgage bond market was doomed, but you could do nothing about it. You couldn't short houses. You could short the stocks of home building companies--Pulte Homes, say, or Toll Brothers--but that was expensive, indirect, and dangerous. Stock prices could rise for a lot longer than Burry could stay solvent.
A couple of years earlier, he'd discovered credit default swaps. A credit default swap was confusing mainly because it wasn't really a swap at all. It was an insurance policy, typically on a corporate bond, with semiannual premium payments and a fixed term. For instance, you might pay $200,000 a year to buy a ten-year credit default swap on $100 million in General Electric bonds. The most you could lose was $2 million: $200,000 a year for ten years. The most you could make was $100 million, if General Electric defaulted