Indian equity markets turned bullish on the first day of the new year, with key indexes gaining 2-3%. The Sensex index rose 2.66% and the Nifty index gained 2.51% as 2001 stocks advanced against 493 declining. All sectoral indices ended higher led by realty and metal stocks. Analysts cautioned that one should not take occasional spurts as a particular trend and that January would see many company results that could impact markets.