Mark Cuban, the billionaire who spent two decades as one of the NBA’s most prominent owners, just bought his way into baseball. The franchise he chose has yet to play a single game in what will eventually become its permanent home city.
His firm, Harbinger Sports Partners, announced on July 23 that it had acquired a minority stake in the Athletics. The team plays at a Triple-A ballpark in West Sacramento while its $2 billion domed stadium rises on the Las Vegas Strip ahead of a 2028 opening.
“We are minority investors looking to make our investors a lot of money,” Cuban said in a statement.
As institutional money pours into baseball, everyday investors are left wondering: Is this a chance to get in, or is the opportunity still reserved for those with exclusive access?
Harbinger brings heavyweight sports experience to its first Athletics deal
The group around Cuban has deep operational roots in professional sports, major league governance, and large-scale venue management. Cuban serves as general partner and president of the Atlanta-based firm, which he helped launch in May 2025.
Rashaun Williams, a minority owner of the NFL‘s Atlanta Falcons, founded Harbinger and serves as chief investment officer.
Steve Cannon, co-founder and chief executive, serves as vice chairman at AMB Sports and Entertainment, which oversees the NFL‘s Atlanta Falcons, MLS’s Atlanta United, and Mercedes-Benz Stadium.
Jonathan Mariner, the firm’s managing partner, previously served as chief financial officer for Major League Baseball and led the negotiations.
The Athletics deal marks Harbinger’s first completed investment since the firm launched in May 2025, the group confirmed. Harbinger has raised more than $460 million toward a $750 million target and plans 10 to 12 franchise investments total.
A $2 billion stadium and Las Vegas anchor the Athletics’ investment thesis
The Athletics’ impending relocation to Las Vegas sits at the center of Harbinger’s rationale for choosing this particular franchise.
The domed ballpark on the former Tropicana Hotel site along Las Vegas Boulevard broke ground in June 2025. ESPN reported in May 2026 that the lower bowl and suite levels are taking shape, with upper-deck construction underway.
Rashaun Williams, Falcons minority owner, said stadium funding was secured and their investment isn’t a rescue.
All of the money required to build the stadium was already committed two years ago…Fisher definitely doesn’t need our money. We’re not coming to bail anyone out by any means
