$6.8 billion. That is Forbes’ real-time estimate of Mark Cuban’s net worth as of November 1, 2026, good for No. 587 in the world. The bottom line: he built it himself, and the biggest piece of it came from one internet deal.
The deal was Broadcast.com. Cuban founded the video portal in 1995 with Todd Wagner, a fellow Indiana University alum, partly so the two of them could watch Hoosier basketball while living in Dallas. They sold it to Yahoo in 1999 for $5.7 billion.
Bags, disco and a firing
The early résumé is less glamorous. Cuban grew up in Pittsburgh and, according to GOBankingRates, worked as a door-to-door garbage bag salesman at 12. In college at Indiana he gave disco lessons to help pay tuition, and for a stretch he co-owned a popular bar near campus, funded with student loan money.
His break into business came after he was fired from a software shop. The offence, per Forbes: closing a $15,000 sale instead of cleaning up the store. Cuban founded a computer consulting firm, MicroSolutions, and sold it to CompuServe in 1990. The profits fed what came next.
Teams, TV and drugs
Cuban bought the Dallas Mavericks for $285 million, and the NBA team went on to win its first and only championship in 2011. In December 2023 he sold 58% of the franchise for an estimated $2 billion before tax. He still holds a minority stake.
Television was a separate track. He and Wagner sold the Landmark Theatres chain in 2018, and Cuban sold majority ownership of HDNet, parent of AXS TV and HDNet Movies, the following year. On ABC’s “Shark Tank” he has judged 13 of the show’s 15 seasons and put in more than $22 million of his own money.
His current project is Cost Plus Drugs, which he cofounded and launched in January 2022 to push down prescription prices. Forbes lists him at 68, living in Dallas.
Sources
- Mark Cuban – Forbes profile
- Mark Cuban Net Worth: A Look at 'Shark Tank' Investor's Incredible Fortune (GOBankingRates, via Yahoo Finance)
