DiamondRock REIT Slated for SmallCap 600

DiamondRock Hospitality Co., a constituent of the Standard & Poor's REIT Composite Index, will replace Energen in the S&P SmallCap 600 Index after the close of trading Nov. 7, S&P has announced.The reason for the change is that Energen, an oil and gas company, will be moving from the SmallCap 600 to the S&P MidCap 400. DiamondRock, based in Bethesda, Md., is a real estate investment trust that owns and operates upscale hotels and resorts.