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OtherMulti-outcomeExpires Oct 1, 2026

Will the minimum Arctic sea ice extent this summer be between 4.2m & 4.4m square kilometers?

Probability

13¢

1h

-0.1pp

24h

-0.4pp

24h Vol

$0.00

Liquidity

$1.5K

Probability (last 7 days)

+1.9pp 7d
Apr 18, 2026, 15:00Apr 25, 2026, 13:18
updated 0s ago·src:Polymarket CLOB

Why did it move?

Structured · 2 factors
  1. 1

    Resolution-risk signal firing

    Expires in 3803h with open resolution ambiguity.

  2. 2

    Wide spread — 8.0¢

    Bid-ask spread is wide enough that intraday moves overstate any tradeable edge. Most of the headline pp move would be eaten by spread on a market order.

What to track next

  • Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.

Verification actions only — never trade recommendations.

Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.

AI prose summary

 

Prose narration of the same metrics shown in the structured breakdown above. Cites only the market data on this page — no news, no predictions. Use the structured factors as the canonical answer; this is here for readability.

Timeline — news, trades, signals, price moves

AllTradesSignalsPrice
  • 0s agoResolve

    Market resolves in 3802.7h

    LOW
  • 13:18Signal

    Signal · Resolution risk

    Expires in 3803h with open resolution ambiguity.

    LOW
  • 13:18Price

    Probability down -4.4pp

    to 13¢

    MEDIUM
  • 12:00Price

    Probability down -3.5pp

    to 13¢

    MEDIUM
  • 11:00Price

    Probability down -5.0pp

    to 13¢

    MEDIUM
  • 09:00Price

    Probability down -4.2pp

    to 13¢

    MEDIUM
  • 08:00Price

    Probability down -5.4pp

    to 13¢

    MEDIUM
  • 07:00Price

    Probability down -5.7pp

    to 13¢

    MEDIUM
  • 03:00Price

    Probability down -4.3pp

    to 13¢

    MEDIUM
  • 02:00Price

    Probability down -5.1pp

    to 13¢

    MEDIUM
  • 00:00Price

    Probability down -4.1pp

    to 13¢

    MEDIUM
  • 23:00Price

    Probability down -6.7pp

    to 13¢

    MEDIUM
  • 21:00Price

    Probability down -4.5pp

    to 13¢

    MEDIUM
  • 20:00Price

    Probability down -6.5pp

    to 13¢

    MEDIUM
  • 18:00Price

    Probability down -5.6pp

    to 13¢

    MEDIUM
  • 16:00Price

    Probability down -10.3pp

    to 13¢

    MEDIUM
  • 14:00Price

    Probability down -9.9pp

    to 13¢

    MEDIUM
  • 1d agoPrice

    Probability down -9.1pp

    to 13¢

    MEDIUM
  • 1d agoPrice

    Probability down -9.8pp

    to 13¢

    MEDIUM
  • 1d agoPrice

    Probability down -10.4pp

    to 13¢

    MEDIUM
  • 1d agoPrice

    Probability down -10.3pp

    to 13¢

    MEDIUM
  • 1d agoPrice

    Probability down -3.0pp

    to 21¢

    MEDIUM
  • 2d agoPrice

    Probability up 3.6pp

    to 22¢

    MEDIUM
  • 2d agoPrice

    Probability up 6.8pp

    to 18¢

    MEDIUM
  • 2d agoPrice

    Probability up 5.5pp

    to 17¢

    MEDIUM
  • 2d agoPrice

    Probability up 6.0pp

    to 17¢

    MEDIUM
updated 0s ago·src:Polymarket CLOB·Polymarket Data

Active signals

Recent Trades

No recent trades visible from the Data API for this market.

updated 0s ago·src:Polymarket Data

Market Description

This market will resolve according to the minimum Arctic sea ice extent for all days between August 1, 2026 and October 1, 2026, as published by the National Snow and Ice Data Center. This market will remain open until data has been published for October 1, 2026, at which point it will resolve immediately. Any revisions to sea ice extent recorded after data is published for October 1, 2026 will not be considered. The resolution source for this market measures temperatures to thousands of square kilometers (e.g. 4.255 million sq km). Thus, this is the level of precision that will be used when resolving the market. The resolution source for this market will be information from the National Snow and Ice Data Center, specifically the minimum value recorded for any day between August 1, 2026 and October 1, 2026 in the “NH-Daily-Extent” tab of the “Sea Ice Index Daily Extent” data set, available at https://nsidc.org/sea-ice-today/sea-ice-tools. If this resolution source becomes unavailable, another resolution source will be chosen.

Resolution & Risk

LOW risk
End date
Oct 1, 2026
UMA status
n/a
Resolution source
Not specified in metadata
Market type
Multi-outcome (neg-risk)
  • Part of a multi-outcome event (neg-risk): only one market can resolve YES.
  • Wide spread (8.0¢) — liquidity risk on entry/exit.
Read full market rules on Polymarket

Alerts

¢
Deliver

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