Polymarket

Polymarket Predicts No US-Iran Ceasefire by March 31 Amid Escalating Conflict

A Polymarket prediction market on a US-Iran ceasefire by March 31 is heavily favoring a 'No' resolution, with current odds reflecting the ongoing military conflict and explicit rejections of a ceasefire from both Washington and Tehran.

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— 3 min read

The prediction market on Polymarket, asking "US x Iran ceasefire by March 31?", is signaling a near-certain continuation of hostilities, with the 'No' outcome currently trading at 0.945, representing a 94.5% probability. This strong market consensus aligns with recent statements from both US and Iranian leadership, indicating a significant escalation rather than a de-escalation of the ongoing conflict.

Since the war began on February 28, 2026, direct military engagement between the United States and Iran has intensified, impacting regional stability and global markets. The market's resolution criteria are strict, requiring an "official ceasefire agreement" defined as a publicly announced and mutually agreed halt in direct military engagement, with clear public confirmation from both governments. Informal understandings or unilateral pauses would not qualify.

Recent developments underscore the unlikelihood of such an agreement by the March 31 deadline. On March 20, 2026, US President Donald Trump explicitly ruled out a ceasefire with Iran, stating that the US was considering "winding down" military operations only after achieving its objectives. Trump outlined five core objectives for the US campaign, including degrading Iran's missile capabilities, destroying its defense industrial base, eliminating its naval and air forces, preventing nuclear capability, and protecting Middle Eastern allies. He remarked, "You don't call a ceasefire when you're literally obliterating the other side."

Conversely, Iran's Foreign Minister Abbas Araghchi rejected ceasefire talks, asserting on March 18, 2026, that the United States is "responsible" for the war and must end its "aggression." He clarified that Iran is not seeking a ceasefire but a "complete, comprehensive, and lasting end to the war." Iran's new Supreme Leader Mojtaba Khamenei also claimed on March 20, 2026, that Iran had delivered a "dizzying blow" to its enemies. The Iranian Revolutionary Guard Corps (IRGC) announced on March 21, 2026, that it had targeted over 55 US and Israeli sites in the West Asia region.

Despite President Trump's talk of winding down, the US is actively increasing its military presence. Reports from March 20 and 21, 2026, indicate the deployment of thousands of additional US Marines and warships to the Middle East, continued airstrikes, and a request for an additional $200 billion in war funding. The conflict has also triggered a surge in global oil prices, with Brent crude rising above $100-$118 per barrel, and disrupted shipping in the critical Strait of Hormuz.

The Polymarket odds, with a trading volume exceeding $14.5 million, reflect a strong market belief in the continuation of hostilities. This sentiment is echoed by other forecasting platforms; Good Judgment's Superforecasters, for instance, assign only a 43% chance of a ceasefire occurring even by May 15, 2026. Given the explicit rejections of a ceasefire from both the US and Iranian leadership, coupled with ongoing military deployments and attacks, the market's low probability for a ceasefire by March 31 appears well-founded.

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Market data fetched at 2026-03-21 12:16 UTC | Polymarket ID: 1466015

This article is generated by AI for informational purposes only. It does not constitute financial advice. Always do your own research before making any investment decisions. Data sourced from Polymarket and public web sources.

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