Guaranty Trust Holding Company Plc (GTCO) is a diversified financial services company providing commercial banking and non-banking financial services. It operates through subsidiaries in Nigeria, West Africa, East Africa, and the United Kingdom, offering a range of products including loans, deposits, asset management, and payment solutions. The company generates revenue primarily from interest income and fees, leveraging its banking and non-banking verticals to serve individual and corporate clients across multiple markets.