
“US x Iran Effective Ceasefire by September 30?” is a geopolitics prediction market on Polymarket with two tradeable outcomes, Yes and No. It belongs to the event “US x Iran Effective Ceasefire begins by...? (2 week pause)”. The Yes price is the market's implied probability that the question resolves Yes. Quotes can change as orders are updated or filled; a quoted price does not guarantee an available fill at that price.
This market resolved Yes on 15 Sep 2026. $285.86K traded over its life. The price history, the holders still on the books and the trade tape below are kept as the record of how the crowd priced the question while it was open.
Vultax observes this market from Polymarket's public order book and data API and keeps its own record: 13 daily price points from Sep 3, 2026 UTC to Sep 15, 2026 UTC (Yes between 67.5% and 97.7%); 74 wallets still holding shares after settlement, the largest ten holding 88.4% of the loaded shares; 500 recent public fills from 142 wallets. Each figure carries its observation time; nothing here is a return forecast.
Public Polymarket market/event context is available; Vultax source-pack coverage is tracked separately.
This closed market has no live orderbook depth; the public close quote is shown for context.
Nine stops, one per figure on this page. Each stop says what the number is, why it matters, and what it reads right now for this market.
Each outcome trades as a share that pays $1 if it wins and nothing if it loses. Prices are quoted in cents, and Yes plus No add up to about one dollar.
Daily closes of the Yes price, Polymarket CLOB · 13 points · 3 Sep 2026 – 15 Sep 2026
| Observed | Yes price |
|---|---|
| 3 Sep 2026 | 67.5% |
| 15 Sep 2026 | 97.7% |
| Trader | Outcome | Shares |
|---|---|---|
| meagainsttheworld | No | 23.79K |
| Golden Beacon 67A6 | No | 4.62K |
| Lasting-Stag | No |
This market will resolve to “Yes” if there is a continuous 14-day period during which the United States does not take a qualifying military action against Iran that begins at any time between market creation and the specified date, 11:59 PM ET. Otherwise this market will resolve to “No.” The first day of the 14-day period will be the calendar date (ET) after the most recent qualifying military action (or the date of market creation, if no qualifying action has occurred). The period runs through 12:00 PM ET on the 14th calendar day. This market resolves to “Yes” if any such period is completed where the most recent qualifying military action occurred on or before the specified end date (ET). 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. A military action will be considered to impact Iran if it directly impacts the terrestrial territory of Iran, including any internal waters. 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 (ET) 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. If, at the end of the third calendar day, conflicting reports remain as to the occurrence, attribution, or timing of the action, the action will be judged 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 credible reporting.
Official listing: polymarket.com/event/us-x-iran-effective-ceasefire-begins-byptptpt-2-week-pause
The Yes price read as a chance. A share at 21.5¢ implies 21.5%, but fees, available depth and who participates can affect that price. A market price is not a calibrated forecast or a verdict.
Dollar value of shares that changed hands in the last 24 hours. High volume means the price is being tested by real money; low volume means a few trades can move it.
Reported dollars resting in the order book. The available size on your side, at the prices you would accept, determines what can fill. A large total alone does not guarantee an execution near the quoted price.
The gap between the best bid and the best ask. A tight spread makes entry and exit cheap; a wide spread is a cost paid on every round trip.
The wallets holding the most shares on each side, and how much of the loaded sample the largest ten control. Concentration shows whether a market is a crowd or a handful of large positions.
The public fills, newest first: which wallet bought or sold which outcome, at what price, and when. It is the market's own diary, and every wallet on it links to a trader profile.
Observed closes of the Yes price over the market's life. The range shows how sure or split the crowd has been; the move shows which way it has been changing its mind.
Trading stops at the close time. The outcome is then settled by the resolution source named in the rules. A closed market is not resolved until the venue reports it, so the two states are shown separately.
| 2.25K |
| 👑_King_George_👑 | No | 1.53K |
| kqwjehrbqwemn | No | 1.5K |
| 888s9h9 | No | 1.08K |
| Ruxpin84 | No | 1K |
| captain-banana | No | 953.43 |
| chudhunter | No | 678.93 |
| konsomida | No | 535 |