FYI- Rex had a degree in mathematics and showed me many books of computer printouts, the big book kind with holes at each end of the paper, the early printing type! I think it was dot matrix printers that he had access to when he worked at these large corporations! When I said I never lost, I never lost a weekend or a weeklong session playing this very aggressive system! I suggest that you realize that first and foremost, you don't know everything! You haven't been where I have been, and if I told you that there was a company that for the last 30 years has averaged 70% returns on their money, you would come out and say that is hokus pokus and sooner or later this firm will lose big time, too!
Ya see, mate, there are people who know way more about math than you or I and one of them was Rex!
As for the company, Renaissance Technologies hires Phd.'s in Math and Science, as well as computer experts to run different systems, derivative trading, historical forecasting and other systems to beat the market! Last year, Mr. Simmons made 1.8 billion and he's been retired for 10 years! But his firm still crushes the market year after year, some years better than others! But averaging 70% return over a 30 year period is mind blowing! And no, you can't invest in their firm, it's by invitation only!