US iGaming Growth Slows to 12%, the Lowest on Record, Citizens Data Shows

US iGaming revenue expanded in 2025 but at its slowest rate ever, according to data from Citizens. Third-quarter growth slowed to 12%, a sharp drop from the 16% seen in the second quarter. September saw a slight uptick, with growth reaching 12%, after 11% in August. FanDuel maintained its top position with 25.1% of the market, slightly less than the 26.6% it held a year earlier.

DraftKings' share fell to 22.2% from 24.3%, but this was an improvement from its 20.9% in the previous quarter. BetMGM slipped to 18.6% from 20.7%, marking six quarters of decline. Caesars dropped to 6.4% from 7.1%. Fanatics was the only operator to see an increase, its share rising to 5.2% from 3.9%. Rush Street Interactive and bet365 also posted gains, moving up to 7.4% and 1.7%, respectively, as a result of recent market entries.

The sports betting side remained relatively stable, with handle growing 7% quarter-over-quarter. Despite the slight dip in overall growth, the iGaming market continues to generate substantial revenue, with online casinos outperforming traditional casinos in several states.