SimpleFunctions
Winner-take-all · 13 outcomes13 contractsPolymarketrefreshed 9 min agoCloses May 29, 2028 · 757d1pp · 14h

J2 League

Leader sits at 49% across 13 bound outcomes, runner-up at 49%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

49%

Winner: Kataller Toyama

runner-up 49¢leader 49¢

Outcomes

13

winner-take-all

Runner-up

49¢

Winner: Jubilo Iwata

Spread

0pp

contested

24h volume

$0

thin orderbook

Closes

May 29, 2028

757 days

Venue

Polymarket

13 bound

30-day trend

0%50%100%-30d-3w-2w-1wtodayWinner: Kataller Toyama: 50% (7 days, 5 points)Winner: Kataller Toyama: 50% on 2026-05-03Winner: Jubilo Iwata: 50% (7 days, 4 points)Winner: Jubilo Iwata: 50% on 2026-05-03Winner: Vegalta Sendai: 48% (7 days, 7 points)Winner: Vegalta Sendai: 48% on 2026-05-03
Winner: Kataller Toyama50¢Winner: Jubilo Iwata50¢Winner: Vegalta Sendai48¢
Top 3 candidates by current price · 7d

Bracket family

How the bracket ladder is priced.

Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.

Analysis

This represents the market's current assessment that a specific outcome in the J2 League competition will occur, with the leading contract priced at 50%. The probability reflects uncertainty about league outcomes occurring in the 2026 season, with trading activity concentrated across related European football competitions—particularly English Premier League and UEFA Champions League markets. Key drivers include team form trajectories, injury status of key players, and transfer activity during off-season windows. The single largest catalyst for resolving uncertainty will be the start of the 2026-2027 season schedule and initial match results, which typically commence in August 2026. Until then, market prices will respond to pre-season fixtures, squad announcements, and betting market adjustments based on updated odds from traditional sportsbooks.

  • Current contract leadership at 50% reflects genuine two-way uncertainty rather than strong consensus directionally
  • High 24-hour trading volumes ($44k-$79k) across Premier League and Champions League contracts indicate active hedging and portfolio positioning
  • J2 League markets show significantly lower volume relative to top-tier European competitions, suggesting thinner liquidity and potentially wider bid-ask spreads
  • Pre-season friendlies and squad composition announcements between May-August 2026 will likely shift probabilities before official season start
  • Traditional sportsbook odds and European football betting markets serve as external price discovery mechanisms affecting Polymarket and Kalshi contract valuations

Recently closed in general

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

More like this

Adjacent prediction questions.

How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

Last updated on this page: 9 min ago.