The Sensex at the Bombay Stock Exchange, which rose by 92 points in opening trade today, later lost some ground and was trading 49 points in positive territory at 15,863 in late morning deals, when reports last came in.After gaining more than 600 points in the past two sessions, the 30-share index rose further by 92 points to 15,906 in the first few minutes of trade today.In Asia, Hong Kong's Hang Seng Index rose by 1.10 per cent. The Dow Jones Industrial Average ended 0.51 per cent higher in yesterday's trade. The stock market in Japan was closed.