Five global private equity firms, including Warburg Pincus, Permira, EQT, Bain, and TPG, are interested in bidding for Bharat Serums and Vaccines (BSV), which is seeking over $1 billion. The firms will sign expressions of interest soon and start due diligence on the Mumbai-based biopharmaceutical company. Advent International, the current owner, acquired BSV in 2019 and now wants to sell it. Some contenders may partner with pharmaceutical companies for the bid. Advent has engaged Jefferies and JP Morgan for the sale process.