The Sensex at the Bombay Stock Exchange fell 18 points, or 0.1 per cent, to 19,483 in early trade, today, as funds and retail investors booked profits. Later, the Sensex remained subdued, and stood 35 points, or 0.2 per cent in the red, at 19,466 in afternoon trade, a short while ago.Stock markets in Japan, China, Hong Kong, Indonesia, Singapore, South Korea and Taiwan were trading mixed, today.