W.R. Berkley Set to Join S&P 500; RLI to Join S&P MidCap 400; The St. Joe Company to Join S&P SmallCap 600


S&P MidCap 400 constituent W.R. Berkley Corp. (NYSE:WRB) will replace Viacom Inc. (NASD:VIAB) in the S&P 500, S&P SmallCap 600 constituent RLI Corp. (NYSE:RLI) will replace W.R. Berkley in the S&P MidCap 400, and The St. Joe Co. (NYSE:JOE) will replace RLI in the S&P SmallCap 600 prior to the open of trading on Thursday, December 5. S&P 500 constituent CBS Corp. (NYSE:CBS) is acquiring Viacom in a deal expected to be completed soon pending final conditions. Post acquisition, CBS will change its name to ViacomCBS Inc. and will trade on the NASDAQ stock exchange under ticker VIAC.