Polymarket$2.32BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.
Kalshi$350.67MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.
Limitless$18.48MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.Compare UEFA Champions League Winner prediction market odds side by side across Polymarket, Kalshi. Platforms show similar odds, with an average spread of just 0.4pp. Close agreement often signals strong market consensus. With $4.47M in combined trading volume across 49 outcomes, this is one of the most actively traded cross-platform prediction markets.
| Outcome | Polymarket | Kalshi | Spread |
|---|---|---|---|
 Arsenal | 26%— | 26%-1.0 | 0.5pp spread |
Bayern Munich | 22%+0.5 |
| 1.0pp spread |
Barcelona | 13%— | 13%±0 | 0.5pp spread |
PSG | 12%— | 12%±0 | 0.5pp spread |
Real Madrid | 10%— | 11%+2.0 | 1.5pp spread |
Liverpool | 7%— | 7%±0 | 0.5pp spread |
Atletico Madrid | 5%±0 | 5%±0 | - |
B Bodoe/Glimt | - | 4%+1.0 | - |
Bodo Glimt | 3%±0 | - | - |
M Manchester City | - | 3%±0 | - |
Man City | 2%— | - | - |
Newcastle | 1%±0 | 2%+1.0 | 0.8pp spread |
K Kairat | - | 1%±0 | - |
B Bilbao | - | 1%±0 | - |
Q Qarabag | - | 1%±0 | - |
O Olympiacos | - | 1%±0 | - |
P Pafos | - | 1%±0 | - |
U Union Gilloise | - | 1%±0 | - |
C Copenhagen | - | 1%±0 | - |
E Eindhoven | - | 1%±0 | - |
Galatasaray | 1%±0 | 1%±0 | 0.1pp spread |
Leverkusen | 1%±0 | 1%±0 | 0.4pp spread |
Chelsea | 1%±0 | 1%±0 | 0.4pp spread |
Tottenham | 0%±0 | 1%±0 | 0.8pp spread |
S Sporting Lisbon | 0%±0 | 1%±0 | 0.9pp spread |
Atalanta | 0%±0 | 1%±0 | 0.9pp spread |
Club Brugge | 0%— | 1%±0 | 0.9pp spread |
Napoli | 0%-0.5 | 1%±0 | 1.0pp spread |
Inter | 0%-1.9 | 1%±0 | 1.0pp spread |
Dortmund | 0%— | 1%±0 | 1.0pp spread |
Villarreal | 0%±0 | 1%±0 | 1.0pp spread |
Ajax | 0%— | 1%±0 | 1.0pp spread |
Juventus | 0%±0 | 1%±0 | 1.0pp spread |
S SL Benfica | 0%±0 | 1%±0 | 1.0pp spread |
Marseille | 0%±0 | 1%±0 | 1.0pp spread |
Eintracht Frankfurt | 0%±0 | 1%±0 | 1.0pp spread |
S Slavia Prague | 0%±0 | 1%±0 | 1.0pp spread |
Monaco | 0%±0 | 1%±0 | 1.0pp spread |
Nice | 0%±0 | - | - |
Union Saint-Gilloise | 0%— | - | - |
Feyenoord | 0%±0 | - | - |
PSV | 0%±0 | - | - |
Fenerbahce | 0%±0 | - | - |
Rangers | 0%— | - | - |
Sturm Graz | 0%— | - | - |
Celtic | 0%— | - | - |
Basel | 0%— | - | - |
Athletic Club | 0%±0 | - | - |
Olympiakos | 0%±0 | - | - |
