This market has closed
Trading ended on Mar 31, 2026. The prices below are the last ones before it closed and no longer update. Browse open markets
Odds by venue
Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
Prices come from our regular polls of each venue, the oldest 206 days ago. Ages are as of when this page was built.
- Polymarket
Yes0.1%0.1%— bid, 0.1¢ askpolled, 4949 h ago0.1¢ on Polymarket$100 pays $100,000 (1000x)Yes0.1%Polymarket 0.1%polled, 4949 h agoBest Yes 0.1¢ on Polymarket, $100 pays $100,000 (1000x)
- Contract
- Yes
- Last price
- 0.1%
- As of
- Polled 206 d ago
- Buy Yes
- 0.1¢
- Sell Yes
- —
- $100 on Yes pays
- $100,000 (1000x)
- Volume
- $357K
Who resolves this market
- Polymarket resolves via:

- UMA optimistic oracle
How the odds have moved
The leading outcome on both venues, with the consensus between them. Hover for exact values.
- Yes
About this market
Final prediction market prices for "Will the US conduct a cyberattack on Iran by March 31?". Yes last traded at 0.1%. $357K has traded across 1 outcome on Polymarket. The market closed on Mar 31, 2026.
This market will resolve to "Yes" if the United States conducts a major cyberattack against Iran between market creation and March 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. For the purposes of this market, a qualifying “major cyberattack” is a cyber operation attributable to the United States that causes significant disruption, damage, or unauthorized access affecting core Iranian national systems—such as critical infrastructure, state institutions, the financial system (including major state operated banks), defense networks, or nuclear facilities. To qualify, the cyberattack must be either (i) officially acknowledged by the U.S. government (or an authorized U.S. government representative), or (ii) confirmed by a broad consensus of credible reporting attributing the operation to the United States. Smaller-scale incidents—such as attacks on individual companies or organizations that do not target core national systems—will not qualify. Cyber incidents that are thwarted without significant disruption, damage, or unauthorized access will not qualify. Cyber operations that are directly related to, coordinated with, or executed as part of kinetic military action (including, but not limited to, airstrikes, missile/drone strikes, raids, ground incursions, or other physical combat operations) will not qualify, even if they cause significant cyber effects. The primary resolution source for this market will be official statements from the U.S. government and/or a consensus of credible reporting.
Questions
What does the consensus price mean?
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
How is the payout worked out?
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Why do the venues show different prices?
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Is a price gap an arbitrage?
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
How fresh are these prices?
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.
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