S&P 500 stock index futures edged lower on Thursday after new U.S. claims for jobless benefits fell less then expected last week ahead of Friday's closely watched non-farm payrolls report.

S&P 500 futures fell 2.2 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 added 4 points and Nasdaq 100 futures slid 2.5 points.

(Editing by Kenneth Barry)