Quant firms at least are one of the few places where noncompetes can make sense. It's an extremely IP sensitive industry with stupendously high pay where the employee is going to someone probably competing very directly with you, for the same/similar opportunities. Actual code + NDAs banning literal reimplementations of stuff aren't that valuable, the knowledge and ideas will stay in the head of the employees. The tw…
Cry me a river. If knowledge of some particular employees worth so much to the quant firms, then they should pay them not to leave accordingly.