Mahindra & Mahindra (M&M) has sold its entire 3.53% stake in RBL Bank via a block deal in the pre-market window, CNBC-TV18 reported. M&M, in an exchange filing, said it sold the stake in the lender for ₹678 crore. With this transaction, M&M has earned an over 62.5% return on its ₹417 crore investment made in July 2023.