Visa to enter S&P 500 index, shares higher By: MarketWatch December 11, 2009 at 18:57 PM EST Shares of Visa Inc. and Mead Johnson Nutrition Co. rise Friday evening following a decision to add them to a key U.S. equity index. Read More >> Related Stocks: Bristol-Myers Squibb Comcast Corp Dow Jones Industrial Average (EOD) MBIA Inc Mead Johnson Nutrition Visa