Making a living off the idiocy of big Wall Street firms

Michael Lewis explains how Goldman Sachs made a pile of money shorting the subprime mortgage market... even though its own traders were locked into very painful and costly long positions:

The only difference between Goldman and everyone else was that Goldman had, in effect, an entirely separate enterprise, sitting on top of the firm, with the power to reverse the judgment of its own supposed experts in various markets. They were able to do this, apparently, without ever saying a word about it to their own traders. Instead of telling the fools trading subprime mortgages that they are wrong, and that they should unwind their positions, they simply offset their trades.

Rolling Heads

All across Wall Street risk managers are being fired, reassigned or hovering under a cloud of contempt and suspicion. Heads must roll, and after the CEO, these guys are the most plausible to guillotine.

But at the same time it's pretty clear that a lot of these so-called risk managers never really had the power to manage risk. They had to consider the feelings, for example, of the guys who ran subprime mortgages. Morgan Stanley conceded as much when it said recently it was considering changing things around so that the risk manager reported to the CFO, rather than the heads of individual businesses.

But at Goldman there were two intelligences at work: one, the ordinary Wall Street intelligence, which was allowed to get itself in trouble, just as at every other Wall Street firm; the other, more like an extremely smart hedge fund that made its living off the idiocy of big Wall Street firms, including its own people.

Bloomberg.com: What Does Goldman Know That We Don't? (Michael Lewis)

via Kottke