Equity benchmarks Sensex and Nifty opened on a choppy note on Tuesday, tracking weak cues from global markets. After dropping over 100 points in the opening session, the 30-share index turned positive to trade 64.21 points or 0.12 per cent higher at 55,646.79, while the broader NSE Nifty advanced 14.95 points or 0.09 per cent to 16,578. Tech Mahindra was the top gainer in the Sensex pack, rising over 3 per cent, followed by Asian Paints, Sun Pharma and Nestle India.
