A benchmark index of Indian equities markets, the 30-scrip Sensitive Index (Sensex), on Wednesday was trading 65.57 points or 0.23 percent up as healthcare stocks rose.The wider 50-scrip Nifty of the National Stock Exchange (NSE) also trading 22.60 points or 0.26 percent up at 8,565.55 points.The Sensex of the S&P Bombay Stock Exchange (BSE), which opened at 28,216.09 points, was trading at 28,227.29 points (at 9.15 a.m.) in the early session, up 65.57 points or 0.23 percent from the previous day's close at 28,161.72 points.The Sensex touched a high of 28,235.71 points and a low of 28,211.24 points in the trade so far.Good buying was observed in healthcare, auto and consumer durables sectors, while marginal selling pressure was seen in realty sector.