World Series 2026 winner odds: Kalshi vs Polymarket
Milwaukee Brewers leads at 64% on Kalshi and 63% on Polymarket. All 2 outcomes compared side by side, $959k traded in 24 hours, updated every 45 seconds.
Sat, Oct 31, 2026, 7:55 PM ET · World Series futures · $959k traded in 24h across both venues
Milwaukee Brewers: Kalshi $0.64 vs Polymarket $0.63, +$0.01
Mid prices, in dollars on a contract that pays $1 if it happens: $0.64 is a 64% chance. The gap is Kalshi minus Polymarket.
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, + = Kalshi higher |
|---|---|---|---|
| Milwaukee Brewers | $0.64 / $0.64 | $0.63 / $0.63 | +$0.01 |
| Tampa Bay Rays | $0.36 / $0.37 | $0.37 / $0.38 | −$0.01 |
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.