S&P 500 Movers: CTSH, WRK
July 15, 2016 at 10:16 AM EDT
In early trading on Friday, shares of WestRock (WRK) topped the list of the day's best performing components of the S&P 500 index, trading up 5.3%. Year to date, WestRock has lost about 7.2% of its value.