Mumbai, May 23 -- The key equity indices benchmarks traded in narrow range with robust gains in mid-afternoon trade. The Nifty traded above 24,850 mark. The market remained firm despite lingering worries about increasing U.S. interest rates and a growing federal deficit. Investors are likely to keep a close watch on bond yields and global economic indicators.

Private bank stocks rebound after previous session's decline.

At 14:25 IST, the barometer index, the S&P BSE Sensex, zoomed 809.64 points or 1% to 81,761.63. The Nifty 50 index jumped 260.95 points or 1.06% to 24,875.25.

In the broader market, the S&P BSE Mid-Cap index advanced 0.57% and the S&P BSE Small-Cap index rallied 0.53%.

The market breadth was positive. On the BSE, 2,314...