NEW YORK, Sept 17 (Reuters) - S&P 500 stock index futures lost ground on Thursday following reports on weekly jobless claims and August housing starts.
* S&P 500 futures SPc2 were off 1.10 points and were a tad 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 DJc2 were up 2 points, while Nasdaq 100 NDc2 futures dipped 2.50 points.
* Futures suggested that Wall Street would likely open little changed following a 3-day run-up.
(Reporting by Ellis Mnyandu; editing by Jeffrey Benkoe)