Mumbai, Jan. 21 -- The key equity benchmarks traded with major losses in mid-morning trade as persistent foreign fund outflows, uneven corporate earnings, and lingering concerns over global trade and geopolitics weighed on investor sentiment. The Nifty traded below the 25,050 mark. Private bank stocks witnessed selling pressure for the third consecutive trading session.

At 11:30 ST, the barometer index, the S&P BSE Sensex, dropped 645.67 points or 0.79% to 81,527.66. The Nifty 50 index lost 199.65 points or 0.79% to 25,035.10.

The broader market underperformed the frontline indices. The S&P BSE Mid-Cap index tumbled 1.66% and the S&P BSE Small-Cap index fell 1.70%.

The market breadth was weak. On the BSE, 872 shares rose and 3,114 shar...