Read more about Barometers trade with small gains; Nifty holds 15,750 mark on Business Standard. The benchmark indices were trading with small gains in afternoon trade. At 13:20 IST, the barometer index, the S&P BSE Sensex, rose 140.04 points or 0.27% at 52,440.51. The Nifty 50 index gained 26.70 points or 0.17% at 15,764.45.