Citigroup Inc. is a multinational financial services corporation headquartered in New York City, operating in over 100 countries and jurisdictions. It provides a broad spectrum of banking and financial solutions through five primary segments: services, markets, banking, U.S. personal banking, and wealth management. Key offerings include cross-border banking for multinational corporations, investment banking, trading, treasury and trade solutions, securities services, retail banking via Citibank, and credit card issuance, making it the third-largest credit card issuer in the United States. As one of the Big Four U.S. banks alongside JPMorgan Chase, Bank of America, and Wells Fargo, Citigroup holds systemically important status and ranks among the world's leading investment banks in the Bulge Bracket. With approximately 229,000 employees, it manages substantial assets exceeding $2.4 trillion and serves institutional clients, corporations, governments, and individual consumers globally. Citigroup Inc. plays a pivotal role in facilitating international finance, corporate lending, and wealth preservation amid evolving regulatory and economic landscapes.