Columbia's math department will be ranked top 15 in the country in any rankings you can find (top 10 in a lot) so to say it's not highly regarded is silly (unless no US universities other than Berkeley, MIT, Stanford, Princeton, and Harvard count)

Does anyone know anything about this company? I have a friend who is starting there in the fall and I was curious what the reputation/culture is like? Sort of like a DE Shaw kind of place? Not as big and (maybe) not as prestigious? Any input would be appreciated.Cheers.