LeBron James, Kevin Durant, James Harden, Joel Embiid, Chris Paul, and Devin Booker were among several new investors in Mitchell & Ness.
The new investment comes after Fanatics and another group including Jay-Z bought the company in February.
Fanatics took 75% ownership at the time for $250 million.
The latest round of investors will consult with the company on collaborations, collections, and other creative products.