[ad_1] Benign valuations, lower crude prices, and stronger Gross Refining Margins (GRMs) will fuel a rally in state-run oil marketing companies (OMCs), with stocks having the potential to rise by as much as 50%. Brokerage firm Avendus Spark has upgraded Indian Oil Corporation (IOC) Ltd., the country’s largest state-run downstream oil refiner to ‘Buy’ rating. […]