A benchmark index of Indian equities markets Thursday was trading 58.49 points or 0.20 percent up as auto stocks surged.Good buying was observed in auto and capital goods sectors, while selling pressure was seen in metal sector.The 30-scrip Sensitive Index (Sensex) of the S&P Bombay Stock Exchange (BSE), which opened at 28,650.25 points, was trading at 28,592.46 points (at 09.22 a.m.) in the early session, up 58.49 points or 0.20 percent from the previous day's close at 28,533.97 points.The Sensex has touched a high of 28,685.88 points and a low of 28,588.94 points in the trade so far.The S&P auto index surged by 214.99 points and capital goods index got augmented by 72.97 points. However, metal index went down by 24.14 points.The wider 50-scrip Nifty of the National Stock Exchange (NSE) also was trading 31.75 points or 0.37 percent up at 8,659.15 points.