The Sensex at the Bombay Stock Exchange rose for the seventh day in a row by adding 43 points in early trade today on sustained buying by funds and retailers amid a firm trend in Asian markets. The 30-share barometer, which had gained over 688 points in the past six sessions, added 42 points, to 18,024 with PSU, capital goods and auto sectors leading the gains.In a Similar Fashion, the wide-based National Stock Exchange index Nifty traded marginally up by 1.65 points to 5,432.65.In Asia, Japan's Nikkei was up by 0.46 per cent and Hong Kong's Hang Seng index by 0.10 per cent. The US Dow Jones Industrial Average ended 0.07 per cent higher in yesterday's trade.