Business Insider reports that Jack Ma's Ant Group is looking to raise its funding target to $35 billion through its initial-public-offering.<br />Ant is Alibaba's fintech arm and China's dominant mobile-payments service.<br />Ant raised its valuation to $250 billion from $225 billion. Previously, the company expected to raise $30 billion.<br />When Ant goes public, its listing will likely be the largest IPO in the world.