NEW YORK (Reuters) - Stock index futures cut losses further on Thursday following reports on weekly jobless claims and fourth-quarter productivity, but a warning from General Motors of substantial doubts about its ability to continue as a going concern weighed on sentiment.
S&P 500 futures fell 14.50 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 fell 104 points, and Nasdaq 100 futures dipped 6.25 points.
(Reporting by Ellis Mnyandu; Editing by James Dalgleish)