State-owned energy major ONGC on Thursday surpassed Reliance Industries Ltd (RIL) to become the country’s most valued company, with a market capitalisation of Rs 2,90,587 crore. RIL’s m-cap stood at Rs 2,86,845 crore. TCS, with a market value of Rs 2,62,805 crore, was at third place while ITC (Rs 2,42,178 crore) was at fourth spot and Coal India Ltd (Rs 2,23,315 crore) at fifth position.