TOTAL VOLUME:
$154.8b
24H VOL:
$245,601,049
24H TRANSACTIONS:
2,985,204,718
OPEN INTEREST:
$1,897,405,322
408,349
Markets across
39,583
events
MATCHED EVENTS:
4,443
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 20, 1:05 AM EST
Polymarket
This market will resolve in favor of the 2026 World Series matchup determined by the winners of the American League Championship Series and National League Championship Series of the 2026 MLB Playoffs. If MLB officially declares an American League or National League champion by any method other than a completed League Championship Series, that team will be treated as the winner of the respective League Championship Series. This market will resolve once both League Championship Series winners have been determined, regardless of whether any 2026 World Series games are subsequently played, completed, relocated or cancelled, or whether either team subsequently forfeits, withdraws or is replaced. If at any point it becomes impossible for a listed matchup to be the 2026 World Series matchup (e.g. one of its teams is eliminated from the 2026 MLB Playoffs), the associated market will resolve to "No". If the 2026 MLB Playoffs are cancelled before both League Championship Series winners have been determined, or both winners have not been determined by November 3, 2026, 11:59 PM ET, each listed matchup's market will resolve to "No" and the "Other" market will resolve to "Yes". The resolution source for this market will be official information from MLB; however, a consensus of credible reporting may also be used.
This market will resolve in favor of the 2026 World Series matchup determined by the winners of the American League Championship Series and National League Championship Series of the 2026 MLB Playoffs. If MLB officially declares an American League or National League champion by any method other than a completed League Championship Series, that team will be treated as the winner of the respective League Championship Series. This market will resolve once both League Championship Series winners have been determined, regardless of whether any 2026 World Series games are subsequently played, completed, relocated or cancelled, or whether either team subsequently forfeits, withdraws or is replaced. If at any point it becomes impossible for a listed matchup to be the 2026 World Series matchup (e.g. one of its teams is eliminated from the 2026 MLB Playoffs), the associated market will resolve to "No". If the 2026 MLB Playoffs are cancelled before both League Championship Series winners have been determined, or both winners have not been determined by November 3, 2026, 11:59 PM ET, each listed matchup's market will resolve to "No" and the "Other" market will resolve to "Yes". The resolution source for this market will be official information from MLB; however, a consensus of credible reporting may also be used.
Typically, prediction market odds reflect a wisdom-of-the-crowd perspective, often differing from traditional sportsbook odds. Sportsbooks set lines to balance action and incorporate a profit margin, while this market is driven purely by traders’ beliefs about the likelihood of each outcome. You may find that this market anticipates shifts in public opinion or reacts more quickly to new information, such as injuries, than traditional sportsbooks. Discrepancies can arise due to differing levels of information and analytical approaches between the two.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in each potential World Series matchup. The price of a share directly corresponds to the implied probability of that matchup occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders buy shares in a particular matchup, the price increases, reflecting growing confidence. Conversely, selling pressure drives prices down. This dynamic pricing ensures the market reflects the collective intelligence of all participants.
This market resolves around Oct 22, 2026, with the outcome confirmed once the actual World Series matchup is verified against credible public reporting. Resolution will be based on the two teams that ultimately compete in the World Series, as officially determined by Major League Baseball. The market will then pay out to those who correctly predicted the exact pairing of teams that reach the championship series. Any disputes regarding the official result will be settled based on widely accepted sources of sports information.
Several factors could significantly impact this market. Major player injuries to key performers on contending teams would undoubtedly shift the odds. Unexpected upsets during the League Championship Series could also cause dramatic price movements. News regarding pitching rotations, managerial decisions, or even weather forecasts could influence traders’ perceptions of each team’s chances. Any significant developments affecting the perceived strength of the remaining playoff contenders have the potential to move this market considerably before Oct 22, 2026.