Quant Models Have a Half Life

There's no one correct way of doing things set in ston. Periodically, managers should be open to trying different approaches. There is no such thing as a quant model that just works always. Anything you find will suffered from alther decay. All through our time ar there are probably some signals they've been trading that have worked for a very long time, but that's extremely rare. The vast majority of things you have to do, you just have to refine them and work on them.