Adar Poonawalla-controlled Rising Sun Holdings Pvt Ltd along with two other individuals have made an open offer to buy an additional 26 per cent stake in non-banking financial company Magma Fincorp for a consideration of more than Rs 1,391 crore. Earlier this month, the Poonawalla Group and Magma Fincorp announced that the group will acquire a controlling 60 per cent stake in the company by way of a Rs 3,456-crore-worth preferential issue of shares. Besides Rising Sun, Magma Fincorp will allot preferential shares to two members of the promoter group -- Sanjay Chamria and Mayank Poddar -- for Rs 250 crore, taking the total capital infusion in th company to Rs 3,456 crore.