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 2026 NBA Western Conference Championship prediction market odds side by side across Polymarket, Kalshi. Platforms show similar odds, with an average spread of just 1.4pp. Close agreement often signals strong market consensus. With $259.3K in combined trading volume across 15 outcomes, this is one of the notable cross-platform prediction markets.
San Antonio SpursPolymarketKalshiCost: 96¢ per pair → pays $1 at resolution. Gross spread 4.2pp before fees.
View all arbs| Outcome | Polymarket | Kalshi | Spread |
|---|---|---|---|
Oklahoma City Thunder | 49%-2.0 | 53%+1.0 | 4.0pp spread |
San Antonio Spurs | 19%+2.1 |
23%+1.0 |
| 4.2pp spread |
Denver Nuggets | 14%+0.5 | 15%+1.0 | 1.5pp spread |
Minnesota Timberwolves | 4%±0 | 5%±0 | 1.3pp spread |
Houston Rockets | 4%±0 | 4%-1.0 | 0.2pp spread |
Los Angeles Lakers | 5%±0 | 3%+1.0 | 2.1pp spread |
Los Angeles Clippers | 3%±0 | 4%±0 | 1.3pp spread |
Phoenix Suns | 2%— | 1%±0 | 0.7pp spread |
Golden State Warriors | 1%±0 | 1%±0 | 0.2pp spread |
Portland Trail Blazers | 1%— | 1%±0 | 0.5pp spread |
New Orleans Pelicans | 0%— | 1%±0 | 0.9pp spread |
Memphis Grizzlies | 0%— | 1%±0 | 0.9pp spread |
Dallas Mavericks | 0%— | 1%±0 | 0.9pp spread |
Utah Jazz | 0%— | 1%±0 | 0.9pp spread |
Sacramento Kings | 0%— | 1%±0 | 1.0pp spread |
