D aniel Gilbert is a self-made American billionaire and the founder and chairman of Rocket Companies, the parent company of Rocket Mortgage (formerly Quicken Loans), the largest mortgage lender in the United States. He founded the company in 1985 and was a pioneer in moving the mortgage industry online, disrupting the traditional, branch-based model. His company's focus on technology and centralized processing allowed it to grow rapidly.

In addition to his mortgage empire, Gilbert is a major figure in his hometown of Detroit. Through his real estate firm, Bedrock, he has invested billions of dollars to acquire and redevelop a vast portfolio of properties in downtown Detroit, playing a central role in the city's revitalization efforts. He is also the majority owner of the National Basketball Association's Cleveland Cavaliers. He took Rocket Companies public in 2020, and he is a signatory of the Giving Pledge, committing to donate the majority of his wealth.