The Sensex at the Bombay Stock Exchange lost 120 points, or 0.7 per cent, below 18,000-mark to 17,957 today. The Nifty, at the National Stock Exchange slipped 33 points, or 0.6 percent, below 5400-mark, to 5,398. Stock markets in Japan, China, Singapore, Hong Kong and South Korea ended higher between 0.2 and 2.7 percent.