Shares of Mangalore Refinery and Petrochemicals Ltd (MRPL) have rallied 100 per cent in the last three months. The stock, which closed at Rs 39.55 on February 25, 2022, rose to a high of Rs 78.30 on the BSE today (May 27). An amount of Rs 1 lakh invested in the shares of Mangalore Refinery three months ago would have turned into Rs 2 lakh today.