UBS CEO Ralph Hamers has defended the bank’s size against critics who argue that it is too large and poses a risk to the financial system. Hamers argued that UBS is a global bank with a diverse range of businesses, and that its size allows it to provide a range of services to its clients.The debate about UBS’s size has been ongoing for several years, with some arguing that the bank is too large and poses a risk to the financial system. However, Hamers and other UBS executives have argued that the bank is well-capitalized and that its size allows it to provide a range of services to its clients.