Michael Kors Holdings Ltd. KORS will join the S&P 500 SPX after the close of trade Friday, S&P Dow Jones Indices said late Monday. The jewelry retailer will replace stock-exchange operator NYSE Euronext NYX, which is being acquired by IntercontinentalExchange Inc. ICE in a deal expected to be completed on or about that date, the index publisher said. Kors shares rose 3.7% after hours. The stock is up nearly 50% this year. Source: http://www.marketwatch.com