Cairn India's shares ended at Rs 322.65, down 6.67 per cent on the BSE. During the day, it had plunged 7 per cent to Rs 321.50.
At the NSE, the stock settled 6.68 per cent lower at Rs 322.45.
Following the decline in the stock price, the company's market value fell by Rs 3,134.8 crore to Rs 61,655.20 crore.
In terms of volume, 14.26 lakh shares of Cairn changed hands at the BSE, while over 87 lakh shares were traded at the NSE during the day.
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Its net profit was down Rs 1,093 crore, or Rs 5.76 a share, from Rs 3,127 crore, or Rs 16.36 a share, in the same period a year ago, the company had said in a statement.
This is the lowest profit for Cairn, the operator of India's biggest oil field on land, in 11 quarters.
The drop in net profit is "primarily due to change in method of depreciation from Straight line method (SLM) to Unit of production", it had said.