=3: Micky Arison — Miami Heat ($7.8 billion)

Age: 70

Nationality: Israeli/American

How he made his fortune: Arison dropped out of University to become a sales rep for his father's cruise ship company, Carnival Corporation, as a youngster, before later assuming the role of CEO in 1979.

At the time Arison took over as head of the organization, Carnival Corp. had a mere two ships to its name, but by the time he stepped down in 2013, it had become the world's largest cruise ship operator.

Titles won as owner: NBA Championship (2006, 2012, 2013), Western Conference (2006, 2011, 2012, 2013, 2014), Atlantic Division (1997, 1998, 1999, 2000), Southeast Division (2005, 2006, 2007, 2011, 2012, 2013, 2014, 2016, 2018).