Read more about Nifty regains 15,000; breadth strong on Business Standard. Key benchmark indices are trading firm in early trade on buying demand in index pivotals. At 9:25 IST, the barometer index, the S&P BSE Sensex, was up 330.86 points or 0.66% at 50,736.18. The Nifty 50 index was up 112.65 points or 0.75% at