Forex settlement startup XFX has successfully raised $17 million in a Series A funding round led by Castle Island Ventures, with participation from Haun Ventures, Coinbase Ventures, and others. This follows a previous $9 million seed funding round. Co-founded by former Bitso employees, XFX is based in Miami and specializes in high-speed fiat-to-stablecoin foreign exchange and payment infrastructure for institutional clients. The firm supports currency conversions between USD, Mexican peso, Colombian peso, and various stablecoins, focusing on deep liquidity in select pairs. The new capital will be used to expand XFX's quantitative team and strengthen partnerships with trading desks and banks.