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 2027 NFL Champion prediction market odds side by side across Polymarket, Kalshi. Platforms show similar odds, with an average spread of just 0.9pp. Close agreement often signals strong market consensus. With $470.4K in combined trading volume across 32 outcomes, this is one of the notable cross-platform prediction markets.
San Francisco 49ersPolymarketKalshiCost: 98¢ per pair → pays $1 at resolution. Gross spread 2.3pp before fees.
View all arbs| Outcome | Polymarket | Kalshi | Spread |
|---|---|---|---|
Seattle Seahawks | 12%— | 11%±0 | 0.5pp spread |
Los Angeles Rams | 9%— | 10% |
| 1.5pp spread |
Buffalo Bills | 7%-1.0 | 8%±0 | 1.5pp spread |
Kansas City Chiefs | 6%±0 | 7%-1.0 | 1.3pp spread |
Baltimore Ravens | 5%±0 | 7%+1.0 | 1.6pp spread |
San Francisco 49ers | 5%±0 | 7%+2.0 | 2.3pp spread |
Detroit Lions | 5%±0 | 6%±0 | 1.4pp spread |
New England Patriots | 6%-1.0 | 5%±0 | 0.5pp spread |
Los Angeles Chargers | 4%— | 6%±0 | 1.6pp spread |
Philadelphia Eagles | 4%±0 | 6%±0 | 1.7pp spread |
Green Bay Packers | 4%±0 | 6%±0 | 1.9pp spread |
Denver Broncos | 3%±0 | 5%±0 | 1.9pp spread |
Chicago Bears | 3%±0 | 5%±0 | 2.1pp spread |
Jacksonville Jaguars | 3%±0 | 4%±0 | 0.9pp spread |
Houston Texans | 4%±0 | 3%-1.0 | 0.6pp spread |
Dallas Cowboys | 3%— | 4%±0 | 1.5pp spread |
Cincinnati Bengals | 2%±0 | 3%-1.0 | 0.9pp spread |
Tampa Bay Buccaneers | 2%— | 3%±0 | 1.2pp spread |
Indianapolis Colts | 2%±0 | 2%±0 | 0.3pp spread |
Minnesota Vikings | 2%— | 2%±0 | 0.3pp spread |
Las Vegas Raiders | 1%— | 2%±0 | 0.5pp spread |
Washington Commanders | 1%— | 2%±0 | 0.7pp spread |
New York Giants | 1%— | 2%±0 | 0.7pp spread |
Atlanta Falcons | 1%— | 2%±0 | 0.9pp spread |
Pittsburgh Steelers | 1%— | 2%±0 | 0.9pp spread |
Carolina Panthers | 1%— | 1%±0 | 0.3pp spread |
New York Jets | 1%— | 1%±0 | 0.1pp spread |
New Orleans Saints | 1%— | 1%±0 | 0.1pp spread |
Miami Dolphins | 1%— | 1%±0 | 0.1pp spread |
Tennessee Titans | 1%— | 1%±0 | 0.1pp spread |
Arizona Cardinals | 1%— | 1%±0 | 0.1pp spread |
Cleveland Browns | 1%— | 1%±0 | 0.1pp spread |
