The BSE benchmark Sensex fell 39 points in early trade today as selling by funds and retail investors amid a weak trend in global markets. The 30-share barometer fell by 39 points, or 0.20 per cent, to 19,458.Similarly, the wide-based National Stock Exchange index Nifty fell by 19 points, or 0.32 per cent, to 5,878.In the Asian region, Japan's Nikkei Index was down 0.88 per cent, while Hong Kong's Hang Seng index shed 0.55 per cent in early trade.The US Dow Jones Industrial Average ended 0.07 per cent down in yesterday's trade.