The Sensex at the Bombay Stock Exchange, which had slipped 98 points in opening trade, this morning, later continued weak, and stood 23 points, or 0.1 percent in the red, at 19,961, a short while ago. The Sensex fell on profit-booking, shifting of funds to the primary market for subscription to the Coal India IPO, and subdued Asian markets. Other stock markets in China, Japan, Hong Kong, South Korea and Taiwan were mixed, amid choppy trade, today, after a surprise 25 basis point interest rate hike by China. US Dow Jones Industrial Averaged had slumped 1.5 per cent, overnight, after Apple's earnings forecast missed estimates.