U.S. stock index futures extended losses on Wednesday as investors waited for key retail sales data for an indication of the mood of the U.S. consumer.
* S&P 500 futures SPc1 fell 6.9 points and were below 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 DJc1 shed 48 points, and Nasdaq 100 NDc1 futures were off 15 points. (Reporting by Edward Krudy; editing by Jeffrey Benkoe)
