Mumbai: The Bombay Stock Exchange benchmark Sensex closed up by 111 points with PSU and oil and gas sector stocks attracting good buying support. Bouncing back from Wednesday's massive 467-point loss, the index touched the day's high of 16,617.80 in intra-day. The chart showing the 52 week performance of Sensex is on the left. The 30-share index ended the day with a gain of 111.19 points at 16,519.68. The National Stock Exchange index Nifty too rose by 27.95 points to 4,947.60. Exploration major ONGC led the rally with a hefty gain 8.72 percent, a day after the government doubled the prices of natural gas, reports PTI. Brokers said with spectrum auction coming to end the uncertainty for telecom companies is over and it helped improve the sentiment. Moreover, it is expected that the revenue earned from 3G auction would be utilised to improve economic growth. The PSU index was the best performer of the day among sectoral indices at 1.87 percent. Oil and gas index was a close second at 1.79 percent.