Russell reconstitution adds to U.S. market's volume, volatility

FTSE Russell reconfigured its indexes at the close in an annual event that triggered the highest trading volume for any session in almost five years and added to Friday's high volatility in the U.S. stock market. Trades in about 933 million shares representing $20.6 billion were executed in Nasdaq's "closing cross" in 0.8 seconds across some 2,464 Nasdaq-listed stocks, according to bourse. The closing cross brings together the buy and sell interest in specific Nasdaq, NYSE and NYSE MKT stocks an