NEW YORK, Dec 18 (Reuters) - U.S. stocks rose on Friday as quarterly results from Oracle Corp ORCL.O and Research In Motion RIM.TORIMM.O boosted optimism about a recovery in technology spending.
* Trading was choppy as Friday marked the expiration of December options and futures, a convergence known as quadruple witching that often means increased volatility as big investors adjust or exercise derivatives positions.
* Both the Dow and the S&P 500 spent most of the day shuttling between gains and losses, but then mounted a strong push late in the session as the U.S. dollar .DXY gave up some of its earlier gains. Both indexes end off their worst levels.
* The Dow Jones industrial average .DJI gained 20.63 points, or 0.20 percent, to end unofficially at 10,328.89. The Standard & Poor’s 500 Index .SPX rose 6.31 points, or 0.58 percent, to finish unofficially at 1,102.39. The Nasdaq Composite Index .IXIC climbed 31.64 points, or 1.45 percent, to close unofficially at 2,211.69.
* For the week, the Dow slipped 1.3 percent, the Nasdaq inched up 0.98 of a percent and the S&P 500 shed 0.34 of a percent. (Reporting by Ellis Mnyandu; Editing by Jan Paschal)