There has been a shake-up in trading at the world's largest hedge fund

There has been a shake-up in the trading department at Bridgewater Associates, the world's largest hedge fund.
Jose Marques, head of trading at the firm, is in the process of leaving the firm, according to people familiar with the matter. 
Meanwhile, Jeff Wecker, head of front office transformation, has left, according to people familiar with the matter. 
Bridgewater has identified replacements for Marques and Wecker, according to one person. The people asked not to be identi