Smith Barney was a prominent financial services firm in the United States, known for providing investment banking, wealth management, and financial advisory services. Founded in 1938, it became a significant player in the financial industry, catering to individual and institutional clients. In 2009, Smith Barney merged with Citigroup and was rebranded as Morgan Stanley Smith Barney. This merger allowed the firm to expand its reach and resources, ultimately becoming part of Morgan Stanley, a leading global financial services company.