Mumbai, Aug 25 - Indian equities made marginal gains Tuesday amid volatile trading, with a key index ending 52 points higher than its previous close.

The 30-scrip sensitive index (Sensex) of the Bombay Stock Exchange (BSE), which opened lower 15,573.91 points, ended at 15,881.01 points (provisional), up 52.26 points or 0.33 percent.

The broader-based Nifty of the National Stock Exchange (NSE) also closed marginally higher at 4,656.95 points, up 0.3 percent.

Broader market indices also ended in the green, with the BSE midcap index closing 0.58 percent higher and the BSE smallcap index ending 1.49 percent up.