Operator shares
US sportsbook market share: two leaders and a long tail
The short answer
US online sports betting is a duopoly plus challengers: FanDuel and DraftKings together account for roughly two-thirds of online GGR in most reporting states, with BetMGM, Caesars Sportsbook and Fanatics fighting over most of the remainder. State-by-state data — like New York's per-operator weekly reports — shows the same shape everywhere: two dominant apps, a competitive middle tier, and a long tail of sub-5% operators.
In this article
There is no single official national market-share report for US sportsbooks — but there doesn't need to be. Several large states publish handle and GGR by operator every month, and they all tell the same story.
What the public data shows
New York publishes per-operator mobile wagering reports weekly and monthly. The shape is stable: FanDuel and DraftKings take the largest handle shares — typically mid-to-high-30s and high-20s-to-low-30s percent respectively — followed by a middle tier (BetMGM, Caesars, Fanatics, BetRivers) and smaller books below a few percent each. The same ordering appears across reporting states, which is why analysts describe the market as a duopoly: two brands with national scale, everyone else contesting single digits to low twenties.
- FanDuel leads on parlay-heavy recreational volume and product speed.
- DraftKings converts its daily fantasy base and leads in several state rollouts.
- Fanatics entered via acquisition (PointsBet US) and grew through celebrity-driven brand spend.
- BetMGM and Caesars leverage their casino-loyalty databases — strong in VIP segments, thinner in mass market.
- Everyone else — ESPN BET, BetRivers, bet365, theScore, Hard Rock — fights for the remaining tail, state by state.
Illustrative example
| Caution | Why it matters |
|---|---|
| National share is not published officially | Estimates are built from state reports and operator disclosures — cite the method |
| Share varies by state | A book can lead in Arizona and barely exist in New York |
| Handle share ≠ revenue share | Promo spend distorts handle; GGR share is the cleaner comparison |
| Shares move at launch | New-state openings temporarily spike challenger books on bonus spend |
Related reading: handle vs. revenue — what the share numbers are actually measuring, the CY2025 revenue total and the newest state's launch economics.
