One of London's biggest fintech unicorns is aiming to become Europe's most valuable fintech startup with an ambitious new funding round led by JPMorgan. Revolut is looking to bring in a $1.5 billion fundraise from JPMorgan, having hired the bank to manage a deal for the challenger bank over the coming months, sources close to the fintech firm told Business Insider. That fundraise could take the form of a $500 million equity raise and a $1 billion convertible loan — which would give the startup a valuation of between $5 to $10 billion.