Showing posts with label derivatives. Show all posts
Showing posts with label derivatives. Show all posts

Monday, March 16, 2009

Just smile and wave, boys - cause we are sinking...

The relationship between the relaxing of usury laws (laws that prohibit the charging of unreasonable or relatively high rates of interest) in the United States and the loss of our manufacturing base is explored well in a recent article in Harpers by Thomas Geoghegan. Read and weep.

It may be hard to grasp how the dismantling of usury laws might lead to the loss of our industrial base. But it's true: it led to the loss of our best middle class jobs. Here's a little primer on how it happened. First, thanks to the uncapping of interest rates, we shifted capital into the financial sector, with its relatively high returns. Second, as we shifted capital out of globally competitive manufacturing, we ran bigger trade deficits. Third, as we ran bigger trade deficits, we required bigger inflows of foreign capital. We had 'cheap money' flooding in from China, Saudi Arabia and even the Fourth World. May God forgive us - we even had capital coming in from Honduras. Fourth, the banks got even more money, and they didn't even consider putting it back to manufacturing. They stuffed it into derivatives and other forms of gambling, because that's the kind of thing that got the 'normal' big return; i.e., not 5 percent but 35 percent or even more. Go back to the top and repeat the sequence. It was what scientists call an autocatalytic reaction. It just kept going. All that cheap money would have been a good thing if it had gone into manufacturing. But it didn't. The capital inflows from big trade deficits couldn't go into manufacturing because the returns in banking were just too high. And because this autocatalytic reaction just kept going - as long as there was imbalance between finance and industry - the system could not readjust or stabilize. The bigger the deficit, the bigger the capital inflow; and the bigger the capital inflow, the bigger the financial sector became; and the bigger the financial sector became (relative to manufacturing), the bigger the trade deficit became.

And what did we as a nation gamble and bet on?

I don’t mind futures on the weather, or futures on interest rates, or even futures on the fluctuations of the price of bleacher seats for Cubs games, but I really have trouble with futures on futures, bets on the outcomes of all bets. … By 2007, the ‘notional’ values of all these bets came to $516 trillion – a number that even theoretically is hard to ponder. And that is all the capital that could have gone into real things we could have sold abroad. The money we bet in Chicago is the money we should have been investing in Detroit. And I know they’re lunkheads in Detroit, but the lunkheads ended up running the auto industry because the smart people, the Harvard dropouts and the autodidacts from Texas Tech, decided that the real money wasn’t in starting software companies or running telcos but in derivatives.

Saturday, February 28, 2009

Chronicles in clueless financial engineering

Mathematician David X. Li's 'Gaussian copula' function allowed financial engineers to model risks on securities and CDOs with faux ease and accuracy. A tale of clueless bankers and traders in financial firms following half baked math in their search for the lucre.

Li's copula function was used to price hundreds of billions of dollars' worth of CDOs filled with mortgages. And because the copula function used CDS prices to calculate correlation, it was forced to confine itself to looking at the period of time when those credit default swaps had been in existence: less than a decade, a period when house prices soared. Naturally, default correlations were very low in those years. But when the mortgage boom ended abruptly and home values started falling across the country, correlations soared. Bankers securitizing mortgages knew that their models were highly sensitive to house-price appreciation. If it ever turned negative on a national scale, a lot of bonds that had been rated triple-A, or risk-free, by copula-powered computer models would blow up. But no one was willing to stop the creation of CDOs, and the big investment banks happily kept on building more, drawing their correlation data from a period when real estate only went up.

Of course, one might ask - where is the good Dr. Li?

Li has been notably absent from the current debate over the causes of the crash. In fact, he is no longer even in the US. Last year, he moved to Beijing to head up the risk-management department of China International Capital Corporation.