Mumbai: Tata Group software services company Tata Consultancy Services today became the country's most valued firm with a market capitalization of over 2.87 lakh crore, surpassing energy major ONGC's value of more than 2.84 lakh crore.

At the end of trade today, TCS commanded a market cap of 2,87,320 crore. This is about 2,508 crore more than the ONGC's m-cap of 2,84,812 crore.

Shares of TCS ended without change, while ONGC fell by 2.09 percent on the BSE.

Last week, state-owned energy major ONGC had pushed IT giant TCS to the second slot in the list of top-10 most-valued companies. Reliance Industries with a market capitalisation of 2,68,910 crore was at third place, followed by ITC (2,64,434 crore) and Coal India (1,89,964 crore).

Market capitalization or the value of a listed company is arrived at by multiplying the total number of its shares with its stock price on a particular day or time. This figure changes daily with the change in the stock price.

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