W arren Stephens is an American billionaire who is the chairman, president, and CEO of Stephens Inc., one of the largest privately owned financial services firms in the United States. He is the son of Jackson T. "Jack" Stephens Jr. and the nephew of Witt Stephens, the two brothers who, in the post-war era, built their father's small municipal bond firm into a full-service investment banking powerhouse based in Little Rock, Arkansas. The firm became famous for its role in taking major American companies, most notably Walmart, public.

Warren joined the family business in the 1980s and took over the leadership from his father in 1986. He has since been the sole leader of the firm for over three decades, guiding its strategy and expanding its national presence. In addition to its investment banking and wealth management businesses, the family's holdings are diverse, with interests in energy, real estate, and hospitality. He is also a prominent political donor to the Republican party and a major philanthropist in his home state of Arkansas. He is known for his conservative, long-term approach to both business and investing.