With a gain of 139 per cent, defence firm Bharat Dynamics emerged as the top gainer in the BSE PSU index in 2022 so far. It was followed by Hindustan Aeronautics (up 105 per cent), Bank of Baroda (up 72 per cent), Mazagon Dock Shipbuilders (up 64 per cent), MRPL (up 61 per cent) and Bharat Electronics (up 58 per cent).