Stock index futures turned negative on Thursday after Labor Department data showed new U.S. claims for unemployment benefits rose more than expected.

S&P 500 futures lost 2.2 points and were 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 shed 7 points, and Nasdaq 100 futures dipped 1 point.

(Reporting by Chuck Mikolajczak)