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Home/Geopolitics/US ceasefire against Iran continues through August 22?
PolymarketGeopoliticsUpdated 2m ago

US ceasefire against Iran continues through August 22?

Market probability
97.1%
Little changed over 24 hours
3 days until the qualification deadline
Latest eligible start date: August 22, 2026 at 7:59 PM ET
The market can resolve after this date while a qualifying period defined in the rules completes.

No meaningful repricing — the probability is steady.

The pricing is supported by healthy trading volume and market depth, a tight spread.

How credible was the move?

Three separate questions — a move can be genuine while the latest price is still settling. Methodology →

Move validity

Is the move backed by real trading and depth?

Strong

The pricing is supported by healthy trading volume and market depth, a tight spread.

Consensus stability

Has the market settled at the new probability?

Stable

The probability has held near its current level over the past several hours.

Contract clarity

Will the rules resolve without ambiguity?

High

The resolution rules are relatively specific, with a named source and a defined deadline.

Recent trade activity$71.4K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to “No” if the United States takes a qualifying military action against Iran by the specified date, 11:59 PM Iran Standard Time. Otherwise this market will resolve to “Yes.” A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by the United States, that directly impacts Iran.

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to “No” if the United States takes a qualifying military action against Iran by the specified date, 11:59 PM Iran Standard Time. Otherwise this market will resolve to “Yes.” A qualifying military action refers to an air strike or a surface-to-surface missile strike, initiated by the United States, that directly impacts Iran. An air strike includes bombs, air-to-surface missiles, and air-launched drones. A surface-to-surface missile strike includes one-way attack drones and surface-to-surface missiles such as cruise or ballistic missiles. The following actions do not constitute a qualifying military action: Munitions destroyed or intercepted before impact; Surface-to-air missile strikes; Small-arms fire; Ground incursions; Cyber operations; Naval gunfire and artillery fire; Howitzers, artillery pieces, mortars, and rocket artillery (e.g. MLRS systems); Minor surface-to-surface strikes, including short range loitering munitions, FPV drones, and ATGM strikes; Any threat, authorization, or announcement of force that has not been executed. Any munition that is intercepted or destroyed before impact does not constitute a qualifying military action. Debris, fragments, or any wreckage from intercepted munitions that land on Iran do not constitute a military action regardless of any damage incurred. “Iran” refers to the terrestrial territory of Iran, including its internal waters. Iran’s maritime territory and airspace are not encompassed. Where territorial borders are disputed, all territory claimed by and under the de facto control of Iran as of market creation will qualify. The occurrence, attribution, and timing of a qualifying military action will be primarily determined based on a consensus of information available from the resolution sources. Where multiple sources conflict regarding the occurrence, attribution, or timing of a relevant military action, this market will remain open until the earlier of: i) the confirmation of the occurrence, attribution, and timing of the action based on a consensus of information available from the resolution sources or ii) 3 full calendar days (Iran Standard Time) from the date of the first credibly reported evidence of the action. If this period would extend past the end date, this market will remain open to allow for 3 full calendar days to pass. At the end of the third calendar day, if conflicting reports remain, the incident will be adjudicated based on the totality of information available from the resolution sources at that time. No single statement, denial, or presentation of evidence will govern where it is contradicted by the totality of information. The resolution sources for this market will be official information from the governments and militaries of the United States and Iran and a consensus of credible reporting.

What could move this market next?

  • The latest eligible start date passesAugust 22, 2026 at 7:59 PM ET

    After this date, no new qualifying period can begin under the rules.

  • Completion of the qualifying period defined in the rules

    Resolution follows once the defined period finishes without a disqualifying event.

Derived from the contract's own mechanics as of Aug 19, 3:34 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Probability by deadline

The same event, priced across deadline contracts on this venue.

  • By Aug 22 (this market)97.1%
  • By Aug 3190.5%
  • By Sep 3070.5%

Extending the deadline from Aug 31 to Sep 30 removes about 20.0 percentage points of implied probability.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: high · expected error ±11 pts.

Thin marketLegacy movement classifier: watch

What's happening

medium classifier confidence
Thin market

Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.

Change (pts)1H0.06H-0.124H-0.17D-0.1
Score breakdown — Movement, Liquidity & Trust

ProbCast Trust Score

69/ 100 · Medium

Reasonably supported. Generally reliable, with minor caveats. Main caveat: expiring soon.

ProbCast measures how reliable this market probability appears — not what to trade.

Movement2

Magnitude of recent probability change

Liquidity82

Related markets

US announces end of Iranian blockade by August 22, 2026?

1%YESTrust 74
Polymarket$176K 24h

US x Iran diplomatic meeting by August 31, 2026?

5%YESTrust 65
Polymarket$24.8K 24h

US ceasefire against Iran continues through August 31?

91%YESTrust 61
ProbCast — Odds Reliability

Know whether prediction-market odds can be trusted. ProbCast analyzes liquidity, market activity, spreads, and price movement to help distinguish meaningful repricing from thin-market noise.

Questions? Chat with us on Telegram
TodayTop MoversEventsAll MarketsWhat ChangedVenue DivergencePolymarket vs KalshiMethodologyCoverageMeta's ArenaWatchlistTerms of UsePrivacyCrypto
  • Book runs out before absorbing a 5-pt move (fragile depth)

Read with caution —Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
27Low
Where the price path tends to go next287 observed
  • Stable consensus90%
  • Choppy / mean-reverting5%
  • News repricing3%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~47h
PredictabilityStable

Secondary read: leaning toward Quote-driven.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$92.3K

Liquidity

$163.4K

Total volume

$93.3K

Category
Geopolitics
Venue
Polymarket
Open interest
—
Spread
0.2 pts
Best bid
97.0%
Best ask
97.2%
7-day range
97.0% – 97.2%
Resolves
Aug 22, 2026

Depth of the order book and volume

Trust breakdown

69/100 · Medium

Reasonably supported. Generally reliable, with minor caveats. Main caveat: expiring soon.

  • Liquidity anchor+57
  • Price steadiness+29
  • Expiring soon-10
  • Limited history-8
Trust score69 / 100
How these scores work →
View on Polymarket

ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

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US ceasefire against Iran continues through September 30?

71%YESTrust 66
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Iran leadership change by August 31?

1%YESTrust 61
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ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. ProbCast is not a betting platform, exchange, or broker and does not provide buy or sell recommendations. Intended for users 18+; availability of prediction-market activity varies by jurisdiction. Venue data is aggregated from third parties and may be delayed or inaccurate. See our Terms of Use.

Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

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