The stock slumped 4.51 per cent to Rs 313.30 on BSE and was the top Sensex loser.
On NSE, the stock went down 4.48 per cent to Rs 313.20.
The net profit of Oil and Natural Gas Corporation (ONGC) in January-March came in at Rs 3,935 crore, lower than Rs 4,889 crore in the same period previous fiscal, ONGC Chairman and Managing Director Dinesh K Sarraf said yesterday.
This is mainly due to higher operating cost and write-off on dry wells drilled.
For the full 2014-15, the company wrote off about Rs 10,000 crore, of which Rs 2,700 crore was on account of dry wells, Sarraf said.