The BSE benchmark Sensex was trading 324 points up at 18,673 points, a shortwhile ago. It recovered by almost 149 points in early trade today on buying by funds and retail investors after the government notified its decision to allow FDI in the multi-brand retail sector. The 30-share barometer had lost nearly 193 points in the past two sessions.The wide-based National Stock Exchange index Nifty was also trading 106 points up at 5,660 points a shortwhile ago.