PaineWebber & Co. was an American investment bank and stock brokerage firm that was acquired by the Swiss bank UBS in 2000. The company was founded in 1880 in Boston, Massachusetts, by William A. Paine and Wallace G. Webber. Operating with two employees, they leased premises at 48 Congress Street in May 1881. The company was renamed Paine, Webber & Co. when Charles Hamilton Paine became a partner. Members of the Boston Stock Exchange, in 1890 the company acquired a seat on the New York Stock Exchange. Wallace G. Webber retired after the business weathered a major financial crisis of 1893.