The BSE benchmark Sensex gained 198 points in the previous session, rose further by 81 points, or 0.47 per cent, to 17,163 in the first five minutes of trade today, with stocks of auto, banking, realty and metal companies leading the rally.Likewise, the wide-based National Stock Exchange Nifty Index moved up by 19 points, or 0.37 per cent, to 5,151.In the Asian region, Hong Kong's Hang Seng Index rose by 1.76 per cent and Japan's Nikkei Index by 1.53 per cent in morning trade today.The US Dow Jones Industrial Average closed 1.45 per cent higher in Friday's trade.