The bank agreed to resolve the FCA case, qualifying for a 30% discount on its fine."Citi is pleased to put this matter behind us," a spokesperson said. In a separate case, the FCA's own data engine picked up potentially suspicious trading by a Citigroup credit trader in late 2017 before the bank's own compliance teams fired him for spoofing. Citigroup houses one of the world's biggest trading businesses, which makes billions of dollars every year from buying and selling everything from stocks and government bonds to complex derivatives. The division reported almost $15bn of revenue in 2017, about the same as the total revenue of global drinks retailer Diageo Plc that year. The division, which traces its roots to former Wall Street powerhouse Salomon Brothers Inc., has a troubled recent history. Citigroup has paid billions of dollars in fines since the financial crisis after allegations that its traders helped to rig interest rates, abuse currency markets and sell shoddy mortgage-backed securities.