Bengaluru-based Vistaar Finance, an MSME-focused financing firm, has raised Rs 250 crore in funding from existing investors. WestBridge Capital led the round while Omidyar Network and Elevar Equity also participated, making the total funds raised till date to Rs 475 crore. The company will use the investment to increase its portfolio to Rs 2,500 crore in the next three years.