Jerry Reinsdorf, 89, purchased a controlling stake in the White Sox in 1981, but has never publicly revealed what percentage of the team he owns.

The young private equity mogul already has major stakes in three other professional sports teams — and he's building what's thought to be the most expensive home in Illinois history.

ESPN's Jesse Rogers reported Thursday the White Sox, who are currently owned by 89-year-old Jerry Reinsdorf, came to terms on a long-term investment agreement with Justin Ishbia.