How Wall Streetâs best traders shrink their way to success Save Share Steve Cohen, the founder of hedge fund Point72, is best described to anyone whoâs not familiar with the Mets owner as the guy that the hit HBO TV show Billions is based on. Thatâs primarily because Cohen played a high stakes cat and mouse game with authorities. But the other similarity is that Cohen used therapists and psychologists to make him and his portfolio managers better traders. The cast of "Billions", which is loosely based on the legal battle between Steve Cohen and Preet Bharara.Â