The Sensex at the Bombay Stock Exchange, which had fallen 37 points ahead of the Reserve Bank's monetary policy review, this morning, later rebounded and had gained a modest 42 points, or 0.2 percent, to 20,398, in afternoon trade, after the policy's announcement. However, realty stocks fell after the RBI tightened provisioning norms for home loans.Other Asian markets in Japan, China, Singapore, Hong Kong and South Korea rose between 0.1 percent and 0.5 percent, today, ahead of the policy meetings by the US and Japanese central banks.