U.K.-based fintech Tide has entered the unicorn club with a fresh funding of $120 million led by TPG, as the startup now serves over 1.6 million micro and small enterprises globally — with more than half of them based in India, the company’s largest and fastest-growing market. The new round — a mix of primary and secondary investment, though the startup declined to confirm the exact split — values the eight-year-old startup at $1.5 billion. It includes share sales by employees, early angels, and...