SimpleFunctions
Geopolitics1 contractPolymarketrefreshed 5 min agoCloses Dec 31, 2026 · 236d

China x Japan military clash before 2027

Liquidity-weighted aggregate sits at 10% across 1 Polymarket contracts.

Implied probability

10%
0%50%100%

Kalshi

not bound

Polymarket

10%

1 contract

Cross-venue gap

single venue

24h move

no pin

24h volume

$2K

1 contracts

Closes

Dec 31, 2026

236 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 11% (3 days, 3 points)Aggregate: 11% on 2026-05-07
Aggregate of 1 contract · 3d

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.

Cluster 1

China x Japan military clash before 2027

1 contract$2K

Analysis

This probability represents the estimated likelihood of armed conflict between China and Japan before the end of 2026. The 22% aggregate masks a significant divergence: Kalshi traders price it at 40% while Polymarket traders assess it at 13%, suggesting disagreement about the baseline risk of escalation over disputed territories or maritime incidents. The probability could shift based on military posturing around contested areas, diplomatic statements from Beijing or Tokyo, or incidents involving disputed islands. Near-term catalyst events include scheduled military exercises, changes in U.S. security commitments to Japan, or any accidents or provocative actions in disputed waters that could trigger uncontrolled escalation.

  • Current military deployment patterns and frequency of intercepts or close encounters in the East China Sea and around the Senkaku/Diaoyu Islands
  • Official statements or policy shifts from Chinese, Japanese, or U.S. government officials regarding military readiness or red lines in the region
  • Historical precedent shows most incidents remain contained; the question is whether structural tensions have increased the probability of an accident becoming conflict
  • Scheduled military exercises or joint operations by Japan and allied forces that could provoke Chinese response or miscalculation
  • Economic interdependence and trade relationships between China and Japan—deeper ties typically correlate with conflict avoidance

What moved the line

  • May 7China x Japan military clash before 2027?4pp1511¢ · Polymarket

Recently closed in china

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

Lateral coverage

Thin contract — here's where the deeper coverage is.

This page aggregates 1 contract (10% headline). At low contract count, the price reflects two participants’ opinions, not a market consensus. The links below are heavier related questions where the orderbook signal is real.

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: 5 min ago.