Indian stock market investors breathed a sigh of relief as the market continued to gain for the fourth straight day on March 20. The benchmark indices closed in the green as the Sensex gained over 1 per cent at the close. The Sensex closed at 76,348.06 levels up by 899.01 points or 1.19 per cent. The Nifty closed 23,190.65 level up by 283.05 points or 1.24 per cent.