By Jake Simpson (September 12, 2014, 6:55 PM EDT) -- Despite the recent turnover in the leadership ranks at many BigLaw firms, minorities still make up less than 5 percent of the leaders at the biggest U.S. firms. And experts say many firms have struggled to retain talented minorities who see more opportunities for leadership in the corporate world.

Since the beginning of 2014, 14 firms ranked in the top 100 of the Law360 400 have either completed or announced a change in leadership, with 15 new firm heads in total. All 15 are white, extending a disturbing streak of nearly three years without a leading U.S. law firm appointing a...