According to Bloomberg, the mega quant fund AQR is down huge already this year:
AQR Hedge Fund Fell Almost 15% Through Mid-February
Why do these guys who have hired the most brilliant PHD's and built the biggest model continue to fail?
The past is not indicative of the future...especially when you never had credit markets or personal balance sheets like the ones we are facing today.
Don’t need to get any more complicated than that in my mind.