The NFL has informed owners and investment firms that it plans to take a percentage of private equity profits from future sales of ownership stakes in its teams. This comes after the NFL owners voted to allow private equity firms to hold up to a 10% stake in teams, marking the first time such investments are permitted in the league. Unlike other major sports leagues, which allow higher percentages of private equity ownership, the NFL's move to take a portion of profits is unprecedented. The NFL's total value has significantly outpaced the growth of the S&P 500 over the past two decades.