TOTAL VOLUME:
$54.4b
24H VOL:
$216,099,358
OPEN INTEREST:
$1,189,677,720
500,754
Markets across
13,672
events
MATCHED EVENTS:
1,801
PLATFORM COVERAGE:
4
Polymarket:
51%
VS.
Kalshi:
49%
NCAA Tournament: National Champion Seed
Description
This market will resolve to "Yes" if the seed number of the 2026 Men's Basketball NCAA Tournament champion equals the listed number. Otherwise, this market will resolve to "No". If the 2026 Men’s Basketball NCAA Tournament is cancelled, postponed after April 30, 2026, 11:59 PM ET, or there is otherwise no champion declared within that timeframe, this market will resolve to “Other”. The resolution source for this market will be official information from the NCAA; however, a consensus of credible reporting may also be used.
PredictionHero - Resolution Divergence Alerts (RDA)
Divergence Detected
Issue:
Polymarket and Kalshi resolve on fundamentally different event scopes: Polymarket settles on seed number of the 2026 NCAA Tournament champion, while Kalshi settles on specific team identity for the 2025-26 season champion. These are incompatible resolution frameworks—Polymarket's seed-based markets cannot be reconciled with Kalshi's team-specific markets because seed assignment is unknown until tournament selection and varies by year.Hero Tip:
Do not cross-trade between Polymarket and Kalshi in this group. A YES on Polymarket (e.g., '5 seed wins') does not map to any specific Kalshi market, and vice versa. Polymarket bets on seed outcomes; Kalshi bets on team outcomes. The platforms are measuring different dimensions of the same tournament and cannot be arbitraged together.Critical Divergence Points:
- Polymarket: Distinct stance: Polymarket resolves based on the seed number of the 2026 Men's NCAA Tournament champion. Markets are structured as 'Will a [X] seed win the 2026 Men's NCAA Tournament?' with resolution tied to seed assignment at tournament time, not team identity. Key quote: 'This market will resolve to Yes if the seed number of the 2026 Men's Basketball NCAA Tournament champion equals the listed number.'
- Kalshi: Distinct stance: Kalshi resolves based on specific team identity as the 2025-26 Division 1 Men's College Basketball National Champion. Each market is structured as 'If [Team Name] is the 2025-26 Division 1 Men's College Basketball National Champion, then the market resolves to Yes.' Resolution is tied to which team wins, regardless of seed assignment. Key quote: 'If [Team] is the 2025-26 Division 1 Men's College Basketball National Champion, then the market resolves to Yes.'
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