UBS Group AG (stylized simply as UBS) is a Swiss multinational investment bank and financial services firm founded and based in Switzerland, with headquarters in both Zurich and Basel. It holds a strong foothold in all major financial centres as the largest Swiss banking institution and the world's largest private bank. UBS manages the largest amount of private wealth in the world, counting approximately half of The World's Billionaires among its clients, with over US$6 trillion in assets (AUM). Based on international deal flow and political influence, the firm is considered one of the "biggest, most powerful financial institutions in the world". UBS is also a leading market maker and one of the eight global 'Bulge bracket' investment banks. Due to its large presence across the Americas, EMEA and Asia–Pacific markets, the Financial Stability Board considers it a global systemically important bank and UBS is widely considered to be the largest and most sophisticated "truly global investment bank" in the world, given its market-leading positions in every major financial centre globally.
UBS investment bankers and private bankers are known for their strict bank–client confidentiality and culture of banking secrecy. Apart from private banking, UBS provides wealth management, asset management and investment banking services for private, corporate and institutional clients with international service. The bank also maintains numerous underground bank vaults, bunkers and storage facilities for gold bars around the Swiss Alps and internationally. UBS acquired rival Credit Suisse in an emergency rescue deal brokered by the Swiss government and its Central bank in 2023, following which UBS' AUM increased to over $5 trillion along with an increased balanced sheet of $1.6 trillion.