Reports / April 2025
Monthly report
April 2025: $1.77B traded on prediction markets
Notional volume across 3 exchanges was $1.77B, −8.4% from March. Polymarket led with a 74.0% share. The busiest day was Mon Apr 28, 2025, at $107M.
Exchanges
Ranked by the month's volume.
| # | Exchange | Volume | Share | vs prior month |
|---|---|---|---|---|
| 1 | Polymarket | $1.31B | 74.0% | −7.3% |
| 2 | Kalshi | $460M | 26.0% | −12% |
| 3 | ForecastEx | $410K | <0.1% | +14% |
What traded
At exchanges that publish a split.
Sports, single-leg 64%Combos (parlays) 0%Non-sports 36%
Daily average: $59.0M over 30 days
Busiest days
- Mon Apr 28, 2025: $107M
- Tue Apr 29, 2025: $93.1M
- Sat Apr 5, 2025: $84.9M
- Fri Apr 4, 2025: $79.8M
- Mon Apr 7, 2025: $77.2M
April 2025: questions
How much volume did prediction markets trade in April 2025?
$1.77B in notional volume across 3 exchanges, down 8% from March. That is $59.0M a day on average.
Which prediction market had the most volume in April 2025?
Polymarket. The top three were Polymarket ($1.31B, 74.0%), Kalshi ($460M, 26.0%), ForecastEx ($410K, <0.1%).
How much prediction market volume was sports in April 2025?
64% at the exchanges that publish a split, including 0% in combos (parlays). Non-sports markets were 36%.
Notional volume: contracts traded × each contract's payout, from each exchange's own daily report. Download every day as CSV · Methods · All reports