One of the most senior women in the hedge fund business identified the problem almost every fund has

Dominique Mielle was one of the hedge-fund industry's most senior women, working at $20 billion Canyon Capital for 20 years. She was the firm's only investment partner, and is one of the few senior female investors in hedge funds. Hedge funds are facing a performance problem – one that could be improved if hedge funds included more diversity in their top ranks, Mielle argues in an op-ed. In 1991, on my first day as an investment banking analyst at Lehman Brothers, HR called me into...