The BSE benchmark Sensex today gained 28 points in early trade on fresh buying by funds and retailers ahead of industrial output data, amid a firming trend on other Asian Bourses. The 30-share barometer, up by 28 points to 19,967, led consumer durables, auto and realty sector stocks. The index had lost 51 points yesterday on profit-booking.Similarly, the wide-based National Stock Exchange index Nifty moved up by 6 points to 6,056.In the Asian region, Japan's Nikkei was sharply up by 2.75 per cent, while Hong Kong's Hang Seng rose by 0.26 per cent in early trade. The US Dow Jones Industrial Average ended 0.15per cent lower yesterday.