The BSE benchmark Sensex gained over 80 points in early trade today. The 30-share barometer recovered by 80.43 points, or 0.46 per cent, to 17,509.99.Similarly, the wide-based National Stock Exchange Nifty moved up by 31.75 points, or 0.60 per cent, to 5,290.25. In Asia, Hong Kong's Hang Seng rose by 0.44 per cent, while the Japan's Nikkei by 0.16 per cent in early trade today.