US-Iran Final Nuclear Deal by…?
Short Answer
1. Market Behavior & Drivers
- Since last update (~28d): New longer-term outcomes increased market probability +6.5pp to 11.0%, widening the edge.
- August 13, August 18, and August 31 outcomes resolved "no", clearing near-term uncertainty.
- September 30 market probability compressed -13.2pp to 0.8% and was market_led.
- Our confidence score increased +1.0pp, now standing at 8.0.
- A final nuclear deal appears highly unlikely given irreconcilable preconditions.
- The June 2026 Memorandum of Understanding unraveled amidst resumed hostilities and stalled negotiations.
- New U.S. secondary sanctions, including 'Operation Economic Outcast,' create a costly stalemate.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| October 31 | 2.5% | 1.2% | The June 2026 Memorandum of Understanding has unraveled, leading to resumed hostilities and sanctions. |
| November 30 | 6.0% | 3.0% | The June 2026 Memorandum of Understanding has unraveled, leading to resumed hostilities and sanctions. |
| December 31 | 11.0% | 5.5% | The June 2026 Memorandum of Understanding has unraveled, leading to resumed hostilities and sanctions. |
Current Context
Sources (10)
- 1Iran President Urges The U.S. To Return To Earlier Interim Peace Dealforbes.com
- 2Iran: U.S. Economic Sanctions and the Authority to Lift Restrictionscongress.gov
- 3Iran urges US to comply with interim deal after Trump threatens further strikes | Quews Newsquews.news
- 4Iran President Says Tehran Would ‘Immediately’ Reciprocate if US Returns to June Dealenglish.aawsat.com
- 5Iran's president says his country would return to ceasefire agreement if US does | AP Newsapnews.com
- 6Iran will reciprocate if US returns to Islamabad commitments, Pezeshkian says | Iran Internationaliranintl.com
- 7Iran signals reciprocity hinging on US return to June MoU, seeks alternate economic pathways | Rudawrudaw.net
- 8Iran is again talking peace after Trump's warning of retaliation, consequences | Live Updates from Fox News Digitalfoxnews.com
- 9WRAPUP 1-Iran urges US to comply with interim deal after Trump threatens further strikes | Internationaldevdiscourse.com
- 10Iran and Nuclear Weapons Productioncongress.gov
2. Price Chart
Historical Price (Probability)
3. Market Data
Contract Snapshot
This market resolves to "Yes" if, by the specified date (11:59 PM ET), the United States and Iran have mutually signed or formally adopted a qualifying written diplomatic instrument. This instrument must be identified as the final deal from their June 14, 2026, memorandum of understanding and establish concrete, measurable obligations limiting Iran's nuclear program. If no such qualifying instrument is signed or adopted by the deadline, the market resolves to "No."
The "specified date" varies by contract, with examples including September 30, October 31, November 30, and December 31. A special condition allows the market to remain open for up to 28 days after the specified date if the full text of a potentially qualifying instrument is not released, with resolution then relying on official announcements and credible reporting.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| October 31 | $0.03 | $0.98 | 3% |
| November 30 | $0.06 | $0.95 | 6% |
| December 31 | $0.11 | $0.90 | 11% |
Market Discussion
Market participants are largely pessimistic about a final US-Iran nuclear deal being reached by the specified dates. Key arguments for "No" center on stalled negotiations, ongoing disputes over inspection commitments, and heightened tensions since an interim pact expired without a final accord. While Iran's president has signaled conditional readiness, the market's low "Yes" probabilities (1-11% across various deadlines) reflect a strong consensus that diplomatic hurdles are unlikely to be overcome soon.
4. Trust Index
Largest single print on us-iran-final-nuclear-deal-by-august-13-2026-20,260,621,201,255,150 carried 64% of its 32,132-contract tape (contract holds 7.4% of the event's money; print is 51d old)
Integrity risk· Large trades
Includes the cost to trade: a $10,000 order loses about 15% of the price to slippage.
Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index
5. What catalysts could compel the Trump administration and Iran to restart formal nuclear deal negotiations before the end of 2026?
| MOU Date | June 14, 2026 [1][2][3] |
|---|---|
| MOU Negotiation Period | extendable 60-day period [1][2][3] |
| Deal Confidence by Dec 31, 2026 | Low [1][2][3] |
Sources (5)
- 1What does the US-Iran agreement reveal about the true...arabnews.jp
- 2US-Iran Final Nuclear Deal by… Odds & Prediction Market Analysis | CryptoSlatecryptoslate.com
- 3US-Iran Final Nuclear Deal by…? Predictions & Odds 2026 | Polymarketpolymarket.com
- 4Iran Update, February 26, 2026understandingwar.org
- 5Iran Says Hormuz Talks Underway, Stocks Rise as Oil Plunge | Bloomberg Daybreak: US Editionyoutube.com
6. What is the latest intelligence on Iran's nuclear program capabilities following the 2026 U.S. and Israeli airstrikes?
| Airstrikes Commencement | February 28, 2026 [1] |
|---|---|
| Nuclear Program Damage | Total destruction lacking; Iran continues "nuclear hedging" [1][2][3][4] |
| Nuclear Deal Probability (late 2026) | Below 15-20% [5][6][7][8][9] |
Sources (12)
- 1Iran in 2026: Six months after the US/Israeli strikescommonslibrary.parliament.uk
- 22026 Iran war | Deal, Explained, United States, Israel, Strait...britannica.com
- 3What Are Iran's Nuclear and Missile Capabilities?cfr.org
- 42026 Iran waren.wikipedia.org
- 5US-Iran Final Nuclear Deal by…? Predictions & Odds 2026 | Polymarketpolymarket.com
- 6US-Iran nuclear deal? Odds & Predictions 2026kalshi.com
- 7US-Iran Final Nuclear Deal by…? — Prediction Markets | FRCresearchfrc.com
- 8US-Iran Final Nuclear Deal by…: When Will It Happen? December 31 Leads at 30% | Live Oddspredictioncircle.com
- 9US-Iran Final Nuclear Deal by which date? - Compare Odds on 3 Platforms | CoinRithmcoinrithm.com
- 10Iran Update: US and Israeli Strikes, Feb. 28, 2026understandingwar.org
- 11Israel/US-Iran conflict 2026: Background and UK responsecommonslibrary.parliament.uk
- 12Iran Says Hormuz Talks Underway, Stocks Rise as Oil Plunge | Bloomberg Daybreak: US Editionyoutube.com
7. How do the stated preconditions for a new nuclear deal from the Trump administration and the Pezeshkian government compare?
| MOU Signing Date | June 17, 2026, with a 60-day negotiation window [1][2][3] |
|---|---|
| Trump's Inspection Demand | IAEA access to nuclear sites bombed during the conflict [3] |
| Iran's Stance on Inspections | Pushed back against inspection requirements [3][4] |
Sources (6)
- 1Policy Alert: Urgent Questions for Congress on the Iran MOUfddaction.org
- 22025–2026 Iran–United States negotiationsen.wikipedia.org
- 3Inspection dispute cools US-Iran deal odds to 22.5% on Polymarket - Blockchain.Newsblockchain.news
- 4What the Trump-Iran agreement says about Lebanon...aljazeera.com
- 5US-Iran Peace Prospects Dim as Trump Rejects Truce Extension | Bloomberg Businessweekyoutube.com
- 6What to know about feasibility of Iran's 3 preconditions for...english.news.cn
8. Which new secondary sanctions has the U.S. imposed on Iran since July 2026, and what has been their reported economic impact?
| Rial Devaluation | Over 2 million rials to the dollar [1] |
|---|---|
| Inflation Rate | Near 90% [1][2] |
| Nuclear Deal Probability | Below 15-35% before 2027 [3][4][5] |
Sources (9)
- 1U.S. unveils new economic sanctions to isolate Irannpr.org
- 2Iran says it is 'fully prepared' to counter widened US...bbc.com
- 3https://polymarket.com/event/us-iran-final-nuclear-deal-by-20260621201254412/us-iran-final-nuclear-deal-by-july-31-2026-20260621201255151polymarket.com
- 4US-Iran Final Nuclear Deal by September 30, 2026? — Polymarket Odds & Price | PredEdgeprededge.com
- 5US-Iran nuclear deal? Odds & Predictions 2026kalshi.com
- 6Treasury Launches Unprecedented Campaign Against...home.treasury.gov
- 7US threatens countries doing business with Iran, but holds...reuters.com
- 8Trump's latest wave of Iran sanctions: Which 60 entities are...aljazeera.com
- 9Bessent expects new US secondary sanctions weekly...jpost.com
9. What role might domestic political pressures in the U.S. and Iran play in altering their leadership's negotiation stances in late 2026?
| Negotiation Status | On hold as of late 2026, no talks scheduled [1][2] |
|---|---|
| U.S. Naval Blockade | Remains in effect [1][2] |
| Iranian Stance | Currently no negotiations with the US [3] |
Sources (5)
- 1Iran war is far from over as deadline for a deal passesapnews.com
- 2Trump announces "crushing economic operation" on Iran...cbsnews.com
- 3Iran Says Hormuz Talks Underway, Stocks Rise as Oil Plunge | Bloomberg Daybreak: US Editionyoutube.com
- 4Trump Reverts to Economic Squeeze of Iran; Colombia Quake Toll Tops 260 | Bloomberg Daybreak: US...youtube.com
- 5Warsh At Jackson Hole; Iran Says Diplomacy Not Impossible | Bloomberg Daybreak: US Editionyoutube.com
10. What Could Change the Odds
Key Catalysts
Key Dates & Catalysts
- Closes: January 01, 2027
Sources (16)
- 1Iran President Urges The U.S. To Return To Earlier Interim Peace Dealforbes.com
- 2Iran will reciprocate if US returns to Islamabad commitments, Pezeshkian says | Iran Internationaliranintl.com
- 3Iran urges US to comply with interim deal after Trump threatens further strikes | Quews Newsquews.news
- 4Iran President Says Tehran Would ‘Immediately’ Reciprocate if US Returns to June Dealenglish.aawsat.com
- 5WRAPUP 1-Iran urges US to comply with interim deal after Trump threatens further strikes | Internationaldevdiscourse.com
- 6Sanctions and bombs won’t end the war in Iran. Trump is running out of options against an intractable foetheconversation.com
- 7Kalshi traders are not expecting a U.S. and Iran nuclear...cnbc.com
- 8Kalshi traders see odds rising that a U.S.-Iran nuclear deal...cnbc.com
- 9The Iran War, Six Months In - The Soufan Centerthesoufancenter.org
- 10Analysis-After six months, the Iran war has reached its endgame - a costly stalemate - AL-MONITOR: The Middle Eastʼs leading independent news source since 2012al-monitor.com
- 11Iran war could last deep into 2027 as the Strait of Hormuz isn't that closed, allowing more oil out | Fortunefortune.com
- 12Possible U.S.-Iran Agreement: INARA and U.S. Sanctionscongress.gov
- 13Iran and Nuclear Weapons Productioncongress.gov
- 14U.S.-Iran Ceasefire and Negotiations: Assessment and...congress.gov
- 15U.S.-Iran Ceasefire and Negotiations: Assessment and Issues for Congresscongress.gov
- 16U.S. Conflict with Irancongress.gov