Reports / Q3 2026
Quarterly report
Q3 2026: $188.91B traded on prediction markets
Notional volume across 10 exchanges was $188.91B in the third quarter of 2026 (July to September), up 81% from Q2 2026 and 21.8 times the $8.68B of Q3 2025. Kalshi led with a 75.1% share. The busiest day was Sun Sep 27, 2026, at $4.56B.
Exchanges
Ranked by the quarter's volume. Share change is against Q2 2026.
| # | Exchange | Volume | Share | vs Q2 2026 | Share change |
|---|---|---|---|---|---|
| 1 | Kalshi | $141.92B | 75.1% | +116% | +12.1 pts |
| 2 | Polymarket US | $17.52B | 9.3% | +148% | +2.5 pts |
| 3 | Polymarket | $17.02B | 9.0% | −36% | −16.7 pts |
| 4 | Crypto.com | $3.75B | 2.0% | +58% | −0.3 pts |
| 5 | Robinhood | $3.44B | 1.8% | opened May 21 | new |
| 6 | Novig | $2.08B | 1.1% | new | new |
| 7 | DraftKings | $1.91B | 1.0% | opened Jun 11 | new |
| 8 | Underdog | $1.08B | 0.6% | new | new |
| 9 | Gemini | $131M | 0.1% | +14% | 0.0 pts |
| 10 | ForecastEx | $73.4M | <0.1% | −12% | 0.0 pts |
By month
| Month | Volume | Daily average | Leader |
|---|---|---|---|
| July 2026 | $56.95B | $1.84B | Kalshi (72.1%) |
| August 2026 | $51.19B | $1.65B | Kalshi (78.2%) |
| September 2026 | $80.77B | $2.69B | Kalshi (75.3%) |
What traded
At exchanges that publish a split.
Busiest days
- Sun Sep 27, 2026: $4.56B
- Sun Sep 20, 2026: $4.22B
- Sat Sep 26, 2026: $4.11B
- Sat Sep 19, 2026: $3.99B
- Sun Sep 13, 2026: $3.44B
Q3 2026: questions
How much volume did prediction markets trade in Q3 2026?
$188.91B in notional volume across 10 exchanges, $2.05B a day, up 81% from Q2 2026.
Which prediction market had the most volume in Q3 2026?
Kalshi. The top three were Kalshi (75.1%), Polymarket US (9.3%), Polymarket (9.0%).
How fast is prediction market volume growing?
Q3 2026 volume was $188.91B, up 81% on the quarter and 21.8 times the $8.68B of Q3 2025. Growth includes exchanges that opened during the period.
What share of Q3 2026 prediction market volume was sports?
82% at the exchanges that publish a split, including 45% in combos (parlays). Non-sports markets were 18%.
Notional volume: contracts traded × each contract's payout, from each exchange's own daily report. Download every day as CSV · Methods · All reports