As construction on the Athletics’ new ballpark in Las Vegas has progressed over the past year, owner John Fisher has more than once said he has sold pieces of the team to various investors. But Fisher has rarely offered details of a process that was intended to raise about $550 million.Now, though, that rather murky picture is growing a bit clearer. At least three of the investment groups that have bought into the A’s have been identified publicly, including the latest on Thursday, which had a familiar name attached.That group, Harbinger Sports Partners, is a private-equity firm dedicated to sports and backed by Mark Cuban, who gained fame as the owner of the NBA’s Dallas Mavericks and on the television show “Shark Tank.” Harbinger didn’t specify how much of the team it had acquired in its announcement of the transaction.The firm, which was launched last year and said in April it had raised more than $450 million, was founded by Rashaun Williams, a limited partner in the NFL’s Atlanta Falcons, who also makes regular appearances on “Shark Tank.” Jonathan Mariner, formerly Major League Baseball’s chief financial officer, and Steve Cannon, a former Falcons executive, are principals as well.Aramark, which will provide food and beverage services at the new A’s stadium, announced last year that it had acquired a piece of the team. And a Korean firm, Team 61, also has a slice of the club.2026 Aces Project update: MLB insiders rank starting pitchersAndy McCulloughChan Ho Park, a former big leaguer, and Suga, a member of the popular band BTS, are among Team 61’s investors, according to The Korea Economic Daily, which reported the firm owns about 2 to 3 percent of the team. Fisher confirmed in late 2025 that the A’s “have a group of Korean partners who’ve come in.”