California-based fintech company Flex has raised $70 million in a B1 funding round led by Halo Fund. The investment aims to support the expansion of Flex Global, its stablecoin-based cross-border banking platform. Flex Global offers multi-currency accounts in 32 currencies across 170 countries, catering primarily to businesses in construction, wholesale, and import/export sectors with annual revenues ranging from $3 million to $200 million.