The Sensex at the Bombay Stock Exchange surged a whopping 404 points, or 2.2 percent, to close at a one-year high of 18,753, today, as the market gave the thumbs up to the UPA government's resolve to push ahead with economic reforms. Positive Asian markets also help lift sentiment. During the session, the Sensex had zoomed 518 points. The Nifty at the National Stock Exchange jumped 137 points, or 2.5 percent, to 5,691.Stock markets in Japan, China, Hong Kong, South Korea and Singapore rose between 0.1 percent and 0.7 percent.