D.A. Davidson & Co. is a boutique investment banking firm that offers financial advisory and brokerage services. The firm provides corporate finance, security trading, public financing, retirement, and pension planning services. It also offers regional and national financial research services. The company was founded in 1935 and is based in Great Falls, Montana with additional offices in California, Colorado, Florida, Idaho, Illinois, Kansas, Minnesota, Missouri, Nebraska, Oklahoma, Oregon, Utah, Washington, and Wyoming. D.A. Davidson & Co. operates as a subsidiary of D.A. Davidson Companies.