SimpleFunctions

December 31, 2026 · Will any country leave NATO by

December 31, 2026 is priced at 6¢ on Polymarket. Current book: 6¢ bid, 6¢ ask, 0¢ spread. This outcome ranks #1 of 2 inside Will any country leave NATO by...?.

Price history

6¢ current

1¢
5¢10¢
May 7, 2026Jun 6, 2026

Contract brief

This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.

Outcome

December 31, 2026

Rank

#1 of 2

Leader

December 31, 2026 6¢

Range

1¢-6¢

Family volume

$867K

Identifier

0x523959b6...58e9

Jun 7, 2026, 3:08 AM UTC · 14m ago

Implied probability

6¢
Latest venue quote
Jun 7, 2026, 3:08 AM UTC · 14m ago

Bid

Ask

Spread

24h volume

$286

Family rank

#1 of 2

2 outcomes · Will any country leave NATO by...?

Closes

Dec 31, 2026

Family volume

$867K

Orderbook snapshot

6 / 6¢

Polymarket
0¢ spread
BidSize
6¢188
4¢1.2K
3¢20
3¢9
2¢3.2K
2¢161
2¢440
2¢6
AskSize
6¢308
6¢208
6¢251
6¢377
6¢245
7¢80
7¢30
7¢279

Contract terms

What resolves this market.

YES condition

This market will resolve to "Yes" if any member state formally withdraws from NATO or provides an official notice of denunciation to NATO by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A notice of denunciation refers to the submission of a notice of withdrawal as per Article 13 of the North Atlantic Treaty. A country's exit from NATO’s integrated military command structure will not be sufficient to resolve this market to "Yes". That country must either withdraw or submit a notice of denunciation to trigger a "Yes" resolution. The resolution source will be official information from the relevant government and NATO, however a consensus of credible reporting may also be used.

Venue

Polymarket

Closes

Dec 31, 2026

Identifier

0x523959b6…58e9

SF Signal
SF Index
1382.11
Regime
neutral

Event family

Will any country leave NATO by.

The same race as a probability stack: rank, volume, and where this contract sits against the other outcomes.

Total volume

$867K

Outcomes

2

Highest price

December 31, 2026 6¢

Current share

19%

Indicators

Yield, cliff risk, volatility, and regime.

Regime

neutral

Score

0.341

Observability

low

Event type

political

Full indicator table

2764.2%
11.3%
Adj IY
1382%
16

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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.