Stock index futures lost strength on Wednesday with S&P 500 futures briefly turning negative after a German government official said there had been no decision on providing aid for debt-troubled Greece.

S&P 500 futures rose 0.3 points but 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 were up 11 points, and Nasdaq 100 futures added 1 point.

(Reporting by Leah Schnurr)