At the stock markets, after a positive opening, the Sensex at the Bombay Stock Exchange remained firm, and gained about 85 points in early trade today or 0.28 percent, to 29,494.The Nifty at the National Stock Exchange also advanced by 33 points, to 9,134. And at the forex market, the rupee advanced 9 paise, to be at 64.95 against the dollar in the early deals.