After rising 2.61 per cent to Rs 1,039 in intra-day trade on BSE, the stock lost ground and ended at Rs 1,004.25, down 0.82 per cent.
On NSE, it fell by 0.58 per cent to end at Rs 1,006.25.
It had gained nearly 3 per cent during the day after the company reported a bigger-than-expected 18 per cent jump in June quarter profit.
On the volume front, 6.68 lakh shares of the company were traded on BSE and over 73 lakh changed hands on NSE during the day.
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Consolidated net profit at Rs 7,113 crore, or Rs 24.1 per share, in April-June was 18.1 per cent higher than Rs 6,024 crore in the same period last fiscal, RIL had said in a statement.
This was the ninth straight quarter for which the company posted the highest segment profit for refining and petrochemical business.
Revenue fell 13.4 per cent to Rs 71,451 crore, hurt by a sharp fall in prices of crude oil and petroleum products.