India’s benchmark stock index headed for the biggest gain in 18 months after the government agreed to increase natural-gas prices and as the rupee rallied. Oil & Natural Gas Corp. jumped to a four-week high.
The S&P BSE Sensex soared 2.9 percent to 19,417.74 at 3:13 p.m. in Mumbai, the sharpest gain since Dec. 21, 2011. Volume on the gauge was 53 percent more than the 30-day average for this time of day. Reliance Industries Ltd., the owner of the world’s largest oil-refining complex, surged 3.9 percent. Coal India Ltd. jumped the most in two years after the government approved setting up of a regulator to help settle disputes.