Forbes estimated Dan Gilbert's net worth at $19.9 billion in May 2025. That ranked him 88th richest person in the world.
Most of the wealth comes from mortgage lending. Gilbert co-founded Rock Financial in 1985 with his brother Gary. It became an early online mortgage lender. Intuit bought it in 2000 and renamed the web operation Quicken Loans.
Gilbert and investors bought the business back in 2002. It later went public as Rocket Companies in 2020. In 2005 he bought the Cleveland Cavaliers for $375 million, then a record price for an NBA team.
Gilbert co-founded StockX, the resale marketplace for sneakers and other limited-edition goods. He invested after buying Campless in 2015, and StockX launched in February 2016. It was valued at over $3.8 billion in April 2021.