Snapping a six-day losing streak, the Sensex at the Bombay Stock Exchange zoomed 507 points, or 3.2 percent, to close at 15,912, today, as sentiment was lifted after Finance Minister Pranab Mukherjee said the government would not withdraw economic stimulus measures. The Nifty at the National Stock Exchange surged 147 points, or 3.2 per cent, to 4,711. Other markets in Japan, China, Hong Kong, Singapore, and South Korea rose between 0.5 percent and 2 percent.