The United States online sports betting market generated a record $14.2 billion in gross gaming revenue in 2025, according to the American Gaming Association's annual market report. FanDuel retained the market leadership position with a 43% share, while DraftKings continued its consistent market share recovery to reach 35%, narrowing the gap that had widened significantly following FanDuel's integration with Flutter Entertainment's global data infrastructure.
The remaining 22% of the market is split between BetMGM, ESPN Bet, Caesars Sportsbook, and a long tail of state-specific operators.
Noteworthy in the 2025 data is ESPN Bet's continued underperformance relative to expectations following its 2023 rebrand from Barstool Sportsbook. Despite Disney's marketing muscle, the platform sits at approximately 4% national market share, prompting industry speculation about Penn Entertainment's long-term commitment to the branded product.
With online sports betting now legal in 38 states plus Washington D.C., market growth is increasingly dependent on deeper penetration of existing customer bases rather than new state launches.
Source: American Gaming Association
James Whitfield
Editor-in-Chief
Member of the iGaming Pulse editorial team. Covering industry news, analysis, and B2B developments across the global iGaming sector.
Comments (1)
ESPN Bet is the biggest surprise. $4B in marketing spend and they couldn't crack 5% share.
