Mark Cuban net worth sits at about $6 billion according to Forbes, which last updated the figure on August 25, 2026. No filing confirms that number. Cuban publishes no balance sheet, and the aggregators that track the Mark Cuban net worth 2026 figure disagree with each other by roughly a billion dollars.
Key facts about Mark Cuban’s net worth
| Detail | Figure |
|---|---|
| Reported net worth | About $6 billion (Forbes, August 2026) |
| Born | July 31, 1958, Pittsburgh, Pennsylvania (age 68) |
| College | Indiana University, Kelley School of Business, 1981 |
| Primary income source | Proceeds from the 1999 Broadcast.com sale, later reinvested |
| Largest single payday | Dallas Mavericks stake sold December 2023 |
| Marital status | Married to Tiffany Stewart since 2002; three children |
Three sources, three different answers
What is Mark Cuban net worth, depending on who is counting
How much is Mark Cuban worth, and where did the money start
The base of the fortune is one 1999 transaction. Cuban and Todd Wagner sold Broadcast.com to Yahoo, whose own market value peaked above $125 billion in 2000, for $5.7 billion in stock.
Cuban then hedged the Yahoo shares and cashed out before the dot-com crash, a move worth a reported $2.5 billion. Everything since has been reinvestment, including an Amazon position reported at close to $1 billion in 2019.
What the Dallas Mavericks sale actually paid Mark Cuban
Cuban bought a majority stake in the Mavericks from H. Ross Perot Jr. on January 4, 2000, for $285 million. In December 2023 the NBA approved a sale of control to Miriam Adelson and Patrick Dumont at a $3.5 billion valuation.
Forbes puts the slice sold at 58% and the pre-tax proceeds near $2 billion. Press reports at the time described a larger 73% transfer worth roughly $3.5 billion to Cuban, and the two accounts have never been reconciled publicly.
The Mavericks trade, 2000 to 2023
Purchase price, sale valuation, and the number nobody outside the deal knows
Cuban kept a minority stake, reported at about 27%, and told reporters in March 2026 that selling was a decision Cuban regrets. That regret is the reason a Mark Cuban net worth Reddit thread usually turns into an argument about whether the sale left Cuban richer or poorer in real terms.
Cost Plus Drugs is the piece nobody can price
Cuban co-founded the Mark Cuban Cost Plus Drug Company with Alex Oshmyansky in January 2022. The company sells generics at acquisition cost plus a 15% margin, a $5 pharmacy fee, and shipping.
It is private, so no revenue line is public. Cuban said in March 2024 that Cost Plus was “not making money yet” while serving a couple million patients across roughly 2,500 drugs from an $11 million Dallas facility.
The business grew anyway. A deal with the health insurer Humana landed in April 2026, and on May 18, 2026 Cost Plus joined TrumpRx, adding more than 600 generics to a site with around 10 million visitors.
Mark Cuban today: Dallas, family, and one court win
Cuban lives in a 24,000-square-foot house in Preston Hollow, Dallas, with a $19 million Laguna Beach property bought in December 2018. The exact address is not publicly disclosed.
Cuban married Tiffany Stewart in Barbados in September 2002, and the couple have two daughters and a son. The one significant lawsuit in the record ended on October 16, 2013, when a federal jury cleared Cuban of the SEC’s insider trading charge over Mamma.com shares after three and a half hours of deliberation.
Frequently asked questions
What is Mark Cuban net worth in 2026?
Forbes reported about $6 billion in August 2026. Celebrity Net Worth lists $6.5 billion, and neither figure comes from a disclosure Cuban has verified.
What does Reddit say about Mark Cuban’s net worth?
Reddit threads on the subject mostly argue that the published numbers lag reality, since the tax bill on the 2023 Mavericks sale is unknown and Cost Plus Drugs has no public valuation. The Mark Cuban net worth 2025 and 2026 estimates circulating there trace back to the same two aggregators rather than to independent reporting.
What is Mark Cuban doing now?
Cuban runs Cost Plus Drugs full time after leaving Shark Tank at the end of season 16 in May 2025, having appeared on the show since 2011. Cuban has also ruled out a presidential run.
Has Mark Cuban written any books?
Two: Let’s Go, Mavs! in 2007 and the 30,000-word e-book How to Win at the Sport of Business in 2011.
