Daniel Gilbert (born January 17, 1962) is an American billionaire, businessman, and philanthropist. He is the co-founder and majority owner of Rocket Mortgage, founder of Rock Ventures, and owner of the National Basketball Association's Cleveland Cavaliers. Gilbert owns several sports franchises, including the American Hockey League's Cleveland Monsters, and the NBA G League's Cleveland Charge. He operates the Rocket Mortgage FieldHouse in Cleveland, Ohio, home to the Cavaliers and Monsters. As of January 2023, Forbes estimated his net worth at US$18.3 billion. Early life and education Gilbert was born to a Jewish family in Detroit, Michigan. He grew up in Southfield, Michigan, where he attended Southfield-Lathrup High School. He earned his bachelor's degree from Michigan State University and a Juris Doctor from Wayne State University Law School, and he is a member of the State Bar of Michigan. While in college he earned a real estate agent's license, and while in law school, he worked part-time at his parents' Century 21 Real Estate agency. Business career Rocket Mortgage Gilbert founded Rock Financial in 1985 with Ron Berman, Lindsay Gross and his younger brother Gary Gilbert. In the late 1990s, the company launched its internet strategy, becoming an early online direct mortgage lender. In the fourth quarter of 2017, the company became the largest retail mortgage lender by volume in the United States. In 2000, software maker Intuit Inc. purchased Rock Financial and renamed the national web operation Quicken Loans. In 2002, Gilbert and a group of private investors purchased Quicken Loans and its affiliated national title company, Title Source, Inc., from Intuit. As of 2021, Gilbert served as the chairman of Quicken Loans, Inc. In 2007, Gilbert and the city of Detroit announced an agreement to move the company's headquarters to downtown Detroit. All 3,600 Michigan-based employees moved into Detroit's urban core by the end of 2010. In August 2020, Quicken Loans went public under the name Rocket Companies and made its debut on the New York Stock Exchange under the ticker symbol “RKT.” As of 2020, Gilbert remained the majority owner, controlling 79% of the company's shares. Sports franchise ownership NetworthIn 2005, Dan Gilbert bought the Cleveland Cavaliers for $375 million, which was then a record price for an NBA team. Since then, he has overseen significant improvements to the team's facilities and helped bring in top players like LeBron James. In 2016, Gilbert also purchased the Cleveland Monsters,