ONGC Boosts Stake in OPaL to 81.28%, Making it a Subsidiary Aug. 23, 2024, 8:02 p.m. Oil and Natural Gas Corporation Limited (ONGC) has increased its stake in ONGC Petro additions Limited (OPaL) to 81.28%.The company paid ₹86.281 crore to convert share warrants into … Unlock the Full Filing And Lot More Access premium insights and stay ahead of the market with Dzambhala Pro. Learn More