OK, in the 90's I interviewed at this company, and had not thought of them since. Basically (according to a guy I interviewed with) they looked for patterns in stock prices and then tried to predict when to buy based on similarity to past patterns, independent of knowledge of world events etc. I don't know if that was all they did at the time, or just a part of it. Anyway, I had been a SCO Unix and Linux admin and they were looking for someone to manage their laptops, which they had Solaris on at the time (but were unhappy with). I had done some fractal analysis in my grad work and they were at least passingly interested in that ... I'm really happy I didn't go that route.