Stock index futures pared gains and S&P 500 futures turned negative shortly after a government report showed the economy created more jobs than expected in February.

Stronger numbers notwithstanding, the data disappointed investors after upbeat job market indicators earlier in the week boosted expectations for Friday's payrolls data.

S&P 500 futures edged down 1.1 points and were slightly 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 gained 9 points and Nasdaq 100 futures shed 3.5 points.