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Geopolitics·Iran Ceasefire

US-Iran nuclear deal by May 31?

icon for US-Iran nuclear deal by May 31?
Geopolitics·Iran Ceasefire

US-Iran nuclear deal by May 31?

16% chance
Polymarket
NEW

$31,241 Vol.

16% chance
Polymarket
NEW

$31,241 Vol.

This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect. Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution. The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.The Trump administration's rejection of Iran's April 27 proposal to reopen the Strait of Hormuz and end the ongoing war while delaying nuclear negotiations has solidified trader consensus against a US-Iran nuclear deal by May 31, with "No" shares implying 84.5% probability. Earlier April talks in Islamabad, mediated by Pakistan and involving VP Vance, collapsed after over 15 hours due to Washington's insistence on immediate curbs to Tehran's uranium enrichment and ballistic missiles as prerequisites for lifting the naval blockade and sanctions relief. No further sessions are scheduled amid escalating rhetoric, a "no war, no peace" stalemate, and Iran's refusal to concede under pressure, leaving significant barriers to any agreement in the next month.

This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”.

If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect.

Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution.

The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.
Volume
$31,241
End Date
May 31, 2026
Market Opened
Apr 28, 2026, 10:39 PM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect. Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution. The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.
This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect. Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution. The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.The Trump administration's rejection of Iran's April 27 proposal to reopen the Strait of Hormuz and end the ongoing war while delaying nuclear negotiations has solidified trader consensus against a US-Iran nuclear deal by May 31, with "No" shares implying 84.5% probability. Earlier April talks in Islamabad, mediated by Pakistan and involving VP Vance, collapsed after over 15 hours due to Washington's insistence on immediate curbs to Tehran's uranium enrichment and ballistic missiles as prerequisites for lifting the naval blockade and sanctions relief. No further sessions are scheduled amid escalating rhetoric, a "no war, no peace" stalemate, and Iran's refusal to concede under pressure, leaving significant barriers to any agreement in the next month.

This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”.

If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect.

Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution.

The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.
Volume
$31,246
End Date
May 31, 2026
Market Opened
Apr 28, 2026, 10:39 PM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if an official agreement over Iranian nuclear research and/or nuclear weapon development, defined as a publicly announced mutual agreement, is reached between the United States and Iran by May 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. If such an agreement is officially reached before the resolution date, this market will resolve to "Yes", regardless of if/when the agreement goes into effect. Agreements that include the United States and Iran as parties, even if they also involve other countries (e.g., a multilateral deal like the JCPOA), will qualify for resolution. The primary resolution source for this market will be an official announcement by the United States and/or the Islamic Republic of Iran, however an overwhelming consensus of credible reporting confirming an agreement has been reached will also qualify.

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Frequently Asked Questions

"US-Iran nuclear deal by May 31?" is a prediction market on Polymarket where traders buy and sell "Yes" or "No" shares based on whether they believe this event will happen. The current crowd-sourced probability is 16% for "Yes." For example, if "Yes" is priced at 16¢, the market collectively assigns a 16% chance that this event will occur. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "US-Iran nuclear deal by May 31?" has generated $31.2K in total trading volume since the market launched on Apr 29, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "US-Iran nuclear deal by May 31?," simply choose whether you believe the answer is "Yes" or "No." Each side has a current price that reflects the market's implied probability. Enter your amount and click "Trade." If you buy "Yes" shares and the outcome resolves as "Yes," each share pays out $1. If it resolves as "No," your "Yes" shares pay $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current probability for "US-Iran nuclear deal by May 31?" is 16% for "Yes." This means the Polymarket crowd currently believes there is a 16% chance that this event will occur. These odds update in real-time based on actual trades, providing a continuously updated signal of what the market expects to happen.

The resolution rules for "US-Iran nuclear deal by May 31?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.