The scrip went up by 3.30 per cent to end at Rs 422.40 on BSE. During the day, it soared 4.84 per cent to Rs 428.70 -- 52-week high.
On NSE, the shares moved up by 3.21 per cent to close at Rs 422.40.
IOC apart, shares of HPCL gained 3.07 per cent and BPCL rose by 1.85 per cent on BSE.
With this the company became the ninth most-valued firm in terms of market capitalisation (m-cap). TCS remains the country's most-valued firm followed by RIL, HDFC Bank, ITC, ONGC, SBI, HDFC and Infosys.
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In terms of volume, 6.19 lakh shares of the company were traded on BSE and over 77 lakh shares changed hands at NSE during the day.
Besides, IOC eight companies have a market valuation of more than Rs 2 lakh crore.
State-owned fuel retailers IOC, Bharat Petroleum Corp Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL), which own over 95 per cent of nearly 58,000 petrol pumps in the country, will launch a pilot for daily price revision in five select cities from May 1 and gradually extend it to all over the country.