The Sensex at the Bombay Stock Exchange rose 151 points, or 0.9 per cent, to again cross the key 16,000 mark, at 16,097, in opening trade, today, on renewed buying at prevailing low levels, and covering up of short positions by speculators. Later, the Sensex gained more ground, and stood 216 points, or 1.4 percent in positive territory, at 16,162 a short while ago. The 30-share Sensex has lost more than 1,600 points in the past eight trading sessions.But other Asian markets in Japan, China, Taiwan, Hong Kong, and Singapore were all modestly lower, today, on continued concerns about European government finances, and gridlock on the US deficit. Wall Street's Dow Jones Industrial Average had slumped 2.1 percent, overnight.