
Justin Birnbaum is a New York City-based staff writer who covers the business of sports. He’s profiled billionaire team owners Toto Wolff and Jorge Mas, reported on how big sneaker brands are capitalizing on surging women’s basketball popularity, and edited tentpole lists such as

Toto Wolff’s Winning Formula
Forbes Staff
The hard-driving billionaire built Mercedes’ F1 team into an auto racing dynasty. Their championship days may be in the rear-view mirror, but he is more successful than ever.
Private Equity Firm Velocity Capital Is Investing More Than $100 Million In A European Soccer Agency
While some institutional investors are flocking to sports team stakes, three-year-old Velocity has other goals in mind—and sees a big score with its sixth deal, for Unique Sports Group.
The World’s Richest Sports Team Owners 2025
The world’s richest sports team owners include the billionaires at the top of the NBA, the NFL and European soccer. See the top 25 ranking, with a combined net worth of $607 billion.
Baseball’s Highest-Paid Players 2025
MLB’s top 10 earners will haul in $576 million combined this season, led by the sport’s first two $100 million men in Mets signing Juan Soto and Dodgers star Shohei Ohtani.
Monarch Collective Expands Fund To $250 Million To Keep Fueling Women’s Sports Boom
The private equity firm hasn’t had an exit yet, but investors are so eager to get into the NWSL and other surging leagues that its founders have secured an additional $100 million for their war chest.
How A Swedish Fitness Toy Went Viral Thanks To Tom Brady, RFK Jr. And An Army Of Celebrities
With its star-studded social media marketing, Boxbollen hit nearly $60 million in revenue last year. Its cofounders have even bigger ambitions—including creating a sport.