David Duncan started in the brokerage business with Prudential-Bache in 1986. He then moved to Stifel-Nicolaus in 1990 as the assistant manager of their downtown office. In 1995 David became the manager of Capital West Securities-Edmond and a broker for Capital West in 2003. David partnered with T.S. Phillips Investments in 2010 as an independent broker in his Edmond office. David and his wife have three daughters and a dog named Lucky.