Ace Limited (NYSE: ACE) will join the S&P 500, replacing Millipore Corp. (NYSE: MIL) which is being acquired by Merck KGaA. Shares of Ace surged $3.08 to $55.31 while Millipore stock eased a penny to $106.94.
Ace To Join S&P 500
July 09, 2010 at 13:47 PM EDT
