Sensex today jumped up by 520 points, its biggest single-day gain in 22 months, to close above the 19,000-mark. The record surge was led by a rally in energy sector stocks, after the government approved nearly doubling of natural gas prices, amid sharp recovery in rupee.

The 30-share index started the day on a firm note and continued rising further and ended the day 519.86 points, or 2.75 per cent higher at 19,395.81. This is Sensex's biggest single day rise since 567.5 on August 29, 2011 and the first time in 10 days that it closed above the 19,000 mark.