The Bombay Stock Exchange benchmark Sensex was trading in red in the afternoon trade today. The Sensex was at 17,151 down by 72 points when reports last came in. The wide-based National Stock Exchange index Nifty dipped by 18 points to 5,095 points.Brokers said markets fell on continued profit-taking by unds and general investors. The Hong Kong's Hang Seng was down 0.27 per cent, while apan's Nikkei shed 0.11 per cent in the morning trade. The US own Jones Industrial Average ended 0.50 per cent down Yesterday.