The benchmark indices firmed up once again in afternoon trade. The Nifty reclaimed 15,100 mark again. Positive global cues boosted investors' sentiment. Trading was volatile as the February 2021 F&O contracts expire today, 25 February 2021. At 13:20 IST, the barometer index, the S&P BSE Sensex, soared 386.07 points or 0.76% at 51,167.76. The Nifty 50 index added 149.35 points or 1% at 15,131.35. Reliance Industries (up 3.31%), Axis Bank (up 3.75%) and HDFC Bank (up 0.94%) supported the uptrend. The broader market outperformed the benchmark indices. The S&P BSE Mid-Cap index rose 1.12%. The S&P BSE Small-Cap index gained 1.25%. Buyers outpaced sellers. On the BSE, 1,792 shares rose and 1,052 shares fell. A total of 148 shares were unchanged.