The Dow Jones industrial average <.DJI> briefly turned positive on Friday as technology stocks extended gains and financials reversed an earlier drop.

The Nasdaq <.IXIC> and the S&P 500 <.SPX> indexes also traded in positive territory, with sentiment on technology shares lifted by results from BlackBerry maker Research In Motion that surpassed expectations.

Federal Reserve Chairman Ben Bernanke on Friday said the Fed will use all tools to stabilize markets and set the stage for an economic recovery.

The Dow Jones industrial average <.DJI> dropped 2.15 points, or 0.03 percent, to 7,975.93. The Standard & Poor's 500 Index <.SPX> gained 2.09 points, or 0.25 percent, to 836.47. The Nasdaq Composite Index <.IXIC> gained 10.06 points, or 0.63 percent, to 1,612.69.

Ben Bernanke