Wall Street gives up gains as Coke, weak oil drag

Wall Street gave up early gains after disappointing earnings from Coca-Cola and weak oil prices offset a boost from Apple. Coke's revenue miss and forecast cut sent its stock down 3.4 percent, making it the biggest drag on the S&P and the Dow. Investors are also awaiting the U.S. Federal Reserve's decision on interest rate hikes later in the day.