Extending losses for the second session, the BSE benchmark Sensex lost 82 points to 19,438 in early trade today.Metal, realty, banking, FMCG and auto sector stocks fell on sustained selling by participants, tracking a weak trend in the Asian region.Similarly, the wide-based National Stock Exchange Nifty declined by 34 points to 5,888.In Asia, Hong Kong's Hang Seng index down by 1.15 per cent, while Japan's Nikkei fell 1.94 per cent in early trade.The US Dow Jones Industrial Average ended 0.53 per cent higher in yesterday's trade.