Benchmark indices Sensex and Nifty opened on a firm note on Monday after the completion of the first phase of Gujarat polls. Most Asian markets were trading positive, which added to the positive sentiment. At 9.25 am, the 30-share Sensex was trading 126.62 points, or 0.38 per cent, higher at 33,376. The index rose 194 points to hit a high of 33,444.98 in early trade. The NSE barometer Nifty50 index was trading 31.90 points, or 0.31 per cent, higher at 10,297.55.