Blackstone Down 0.8%, Franklin Resources Down 1.1%, Janus Henderson Down 1%

U.S. Stock Indexes Erase Opening Losses; Nasdaq up 0.5%, S&P 500 up 0.2%

Exclusive-Citadel Securities, Jane Street and Optiver May Be the First to Benefit From the Opening up of China's ETF Market Maker Sector, Sources Say