Interesting article on Jim Simons and his Renaissance Technologies LLC group of hedge funds.
Mr. Simons is otherwise known as "God" among the quant crowd.
The laws of the financial markets present a special challenge, Simons says. Unlike the laws governing physics or chemistry, they tend to change over time. ``One can predict the course of a comet more easily than one can predict the course of Citigroup's stock,'' he says. ``The attractiveness, of course, is that you can make more money successfully predicting a stock than you can a comet.''