The BSE Sensex today gained over 85 points in early trade as funds and investors made fresh buying ahead of RBI policy meeting amid a firm trend in other Asian bourses. The 30-share barometer rose to around 19,379, led by stocks of realty, auto and banking sectors. The Sensex had lost over 277 points in the previous two sessions.Similarly, the wide-based National Stock Exchange Nifty edged up by over 28 points, to around 5,864.