RTRS: US STOCKS-Futures add losses on GDP data; banks tumble
U.S. stock index futures extended losses on Friday, suggesting the benchmark S&P 500 .SPX may open below its Nov. 21 bear market low, as government data showed the economy contracted more sharply than initially estimated in the fourth quarter.
* Financial shares were a top drag following news the U.S. government is taking a large common equity stake in embattled lender Citigroup (C.N), down 35 percent before the bell.
* Investors fretted over which other banks might see similar action as Washington grapples to stabilize the banking sector and worries persist about dilution of current shareholders.
* S&P 500 futures SPc1 fell 21 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 DJc1 tumbled 155 points, and Nasdaq 100 NDc1 futures lost 24.25 points.
