Bengaluru-based fintech startup Razorpay has more than doubled its valuation from $3 billion in April this year to $7.5 billion after it raised $375 million in its Series F round of funding. This marks the largest fundraise to date for the seven-year-old startup, CEO Harshil Mathur said. The new round was co-led by Lone Pine Capital, Alkeon Capital and TCV.