MLB World Series Champion 2026: Kalshi vs Polymarket prices
Sat, Oct 31, 2026, 7:55 PM ET · World Series futures · $621k traded in 24h across both venues.
New York Yankees: Kalshi 11¢ vs Polymarket 10¢, +1.6 pp
Mid prices. A price is the market's probability: 11¢ means 11%. The gap is Kalshi minus Polymarket in percentage points.
Two separate exchanges, two accounts. Links may carry a referral code, which never changes what is shown. Disclosures.
All outcomes
| Outcome | Kalshi bid / ask | Polymarket bid / ask | Gap |
|---|---|---|---|
| Los Angeles Dodgers | 31¢ / 31¢ | 31¢ / 32¢ | -0.2 pp |
| Milwaukee Brewers | 14¢ / 14¢ | 13¢ / 14¢ | +0.6 pp |
| New York Yankees | 11¢ / 11¢ | 9¢ / 10¢ | +1.6 pp |
| Tampa Bay Rays | 8¢ / 8¢ | 8¢ / 9¢ | +0.1 pp |
| Philadelphia Phillies | 7¢ / 8¢ | 6¢ / 6¢ | +1.1 pp |
| Atlanta Braves | 7¢ / 7¢ | 7¢ / 7¢ | -0.3 pp |
| Chicago Cubs | 5¢ / 6¢ | 5¢ / 5¢ | +0.1 pp |
| Boston Red Sox | 5¢ / 5¢ | 5¢ / 5¢ | -0.5 pp |
| Chicago White Sox | 4¢ / 4¢ | 3¢ / 4¢ | +0.4 pp |
| Houston Astros | 3¢ / 4¢ | 3¢ / 4¢ | +0.3 pp |
| Toronto Blue Jays | 1¢ / 2¢ | 2¢ / 2¢ | -0.6 pp |
| Cleveland Guardians | 2¢ / 2¢ | 2¢ / 2¢ | -0.1 pp |
| San Diego Padres | 1¢ / 2¢ | 2¢ / 2¢ | -0.1 pp |
| Seattle Mariners | 0¢ / 0¢ | 1¢ / 1¢ | -1.0 pp |
| Texas Rangers | 1¢ / 1¢ | 1¢ / 1¢ | +0.4 pp |
Price history, last 3 days
How this is matched
Multi-outcome markets are matched outcome by outcome by name, with an alias table for the usual spellings. Polymarket prices come from its live order book, Kalshi from its public API. Refreshed every 45 seconds.
What this is not
Read-only. Nothing here places or routes orders and nothing is advice. Fees, slippage and the time it takes to move money between venues are not in these numbers.