Guaranty Trust Holding Company PLC also known as GTCO PLC is a multinational financial services group, that offers retail and investment banking, pension management, asset management and payments services, headquartered in Victoria Island, Lagos, Nigeria. GTCO Plc was created in July 2021 following the corporate reorganization of Guaranty Trust Bank PLC into a Holding Company. GTCO Plc's reorganisation means it will now offer more services beyond banking; with a payments business being top of mind for the group. Under its old structure, it could not have run non-lending businesses because a 2010 regulation by the Central Bank of Nigeria mandated banks to stop operating their non-banking subsidiaries. They either had to divest from non-core lending service or restructure as a holdings company. Its new businesses include payments, pension management, asset management, and its existing banking business. GTCO's banking subsidiary in Nigeria, Guaranty Trust Bank Limited is Nigeria’s most valuable bank by market value with its most recent market valuation at N840.26 billion. Wikipedia