The Sensex at the Bombay Stock Exchange opened with a small loss of 15 points, at 18,741, this morning, on mild selling by investors, amid weak Asian bourses. Later, in afternoon deals, the Sensex lost some more ground, and stood 60 points, or 0.3 percent in the red, at 18,695, amid volatile trade, a short while ago. The 30-share Sensex had gained 324 points in the previous three trading sessions.Key stock indices in Japan, China,Hong Kong, Indonesia, South Korea, Taiwan and Singapore were down by between 0.3 and 0.7 per cent, today. MM/1330