Reports / June 2025
Monthly report
June 2025: $2.12B traded on prediction markets
Notional volume across 3 exchanges was $2.12B, +5.9% from May. Polymarket led with a 62.9% share. The busiest day was Tue Jun 3, 2025, at $144M.
Exchanges
Ranked by the month's volume.
| # | Exchange | Volume | Share | vs prior month |
|---|---|---|---|---|
| 1 | Polymarket | $1.33B | 62.9% | −0.1% |
| 2 | Kalshi | $782M | 36.9% | +18% |
| 3 | ForecastEx | $4.2M | 0.2% | 3.7× |
What traded
At exchanges that publish a split.
Sports, single-leg 79%Combos (parlays) 0%Non-sports 21%
Daily average: $70.7M over 30 days
Busiest days
- Tue Jun 3, 2025: $144M
- Sun Jun 22, 2025: $97.3M
- Fri Jun 13, 2025: $91.1M
- Sun Jun 1, 2025: $89.9M
- Tue Jun 24, 2025: $89.3M
June 2025: questions
How much volume did prediction markets trade in June 2025?
$2.12B in notional volume across 3 exchanges, up 6% from May. That is $70.7M a day on average.
Which prediction market had the most volume in June 2025?
Polymarket. The top three were Polymarket ($1.33B, 62.9%), Kalshi ($782M, 36.9%), ForecastEx ($4.2M, 0.2%).
How much prediction market volume was sports in June 2025?
79% at the exchanges that publish a split, including 0% in combos (parlays). Non-sports markets were 21%.
Notional volume: contracts traded × each contract's payout, from each exchange's own daily report. Download every day as CSV · Methods · All reports