NEW YORK, Dec 16 (Reuters) - S&P 500 stock index futures turned negative on Thursday after FedEx Corp posted second-quarter earnings and gave an outlook for fiscal 2011.
S&P 500 futures were down 0.4 points but slightly above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures rose 10 points, while Nasdaq 100 futures added 4.75 points.