Market benchmark Sensex today zoomed over 460 points its biggest single-session gain in nearly four weeks to end at 25,688.86 and the broader NSE Nifty recaptured the 7,800-mark on a flurry of buying by foreign funds and retail investors amid a firm trend overseas. Besides, a string of encouraging earning numbers so far, raising hopes of an improvement in the country's economy, buoyed trading sentiment. Buying also kicked up after a soft US jobs report gave investors hope that the Federal Reserve would keep any future interest rate hikes small and slow. The Sensex opened strong at 25,321.83 and continued to rise to hit the day's high of 25,709.68. Finally, it settled at almost two-week high of 25,688.86, gain of 460.36 points or 1.82 per cent -- its biggest single-day gain since April 13.