A benchmark index of Indian equities markets Tuesday gained 128.14 points or 0.50 percent up as auto and metal stocks surged.

Good buying was observed in auto, metal, capital goods and banking sectors, while selling pressure was seen in IT sector.

The 30-scrip Sensitive Index (Sensex) of the S&P Bombay Stock Exchange (BSE), which opened at 25,469.94 points, was trading at 25,541.92 points in the pre-noon session, up 128.14 points or 0.50 percent from the previous day's close at 25,413.78 points.

The Sensex touched a high of 25,546.99 points and a low of 25,466.77 points in trade.

The S&P BSE auto index surged by 400.40 points, metal index gained 331.24 points, capital goods index got augmented by 213.94 points and bankex increased by 110.14 points. However, IT index dipped by 66.09 points.

The wider 50-scrip Nifty of the National Stock Exchange (NSE) also surged and was trading 30.70 points or 0.40 percent up at 7,642.05 points.