Bill began his career in the financial services industry in 1990 and quickly became a top producer within the industry. In 1995, he began a fee-only practice now known as Sowell Management, which services a broad spectrum of some of the top Independent Advisor Representatives (IARs), and Registered Investment Advisors (RIAs) in the United States. He and his wife, Cindy, have worked as a team for more than 20 years.

Bill has strong roots in the community. He has served as past president of the Rotary Club of Little Rock and was named a Paul Harris Fellow. He has been a board member and is past chair of Leadership Greater Little Rock and is a past board member of numerous other nonprofit organizations. He was recognized by AY Magazine as a 2021 Man of Distinction.