A country’s voting shares and level of board representation are based on the size of its economy and its financial contributions to the institution. The United States is the single largest shareholder in the IDB and the EBRD. At the ADB, the United States is tied with Japan for the largest financial commitment. At the AfDB, the United States is the second largest shareholder after Nigeria. Among regional members, China and India are large contributors to the ADB; Egypt and South Africa are large contributors to the AfDB; Argentina, Brazil, and Venezuela are large contributors to the IDB; and Russia is a large contributor to the EBRD.