The Sensex at the Bombay Stock Exchange jumped 188 points, to a nearly 33-month high of 20,633, in opening trade on Monday, on the back of strong foreign fund inflows, and firm Asian markets. After paring some of its initial gains, the Sensex still stood 93 points, or 0.5 percent in the green, at 20,538, a short while ago. Other Asian markets in Singapore, Hong Kong, Taiwan, South Korea and Indonesia rose between 0.1 percent and 1.4 percent.