The key indices firmed up in afternoon trade. At 13:20 IST, the barometer index, the S&P BSE Sensex, jumped 418.25 points or 0.86% at 49,200.76. The Nifty 50 index gained 105 points or 0.73% at 14,452.25. The broader market was trading lower. The S&P BSE Mid-Cap index fell 0.56%. The S&P BSE Small-Cap index lost 0.37%. Sellers outpaced buyers. On the BSE, 1,283 shares rose and 1,707 shares fell. A total of 163 shares were unchanged. In Nifty 50 index, 29 stocks advanced while 21 stocks declined. Foreign portfolio investors (FPIs) bought shares worth Rs 6,029.83 crore, while domestic institutional investors (DIIs), were net sellers to the tune of Rs 2,372.54 crore in the Indian equity market on 8 January 2021, provisional data showed.