Iran agrees to end enrichment of uranium by December 31?

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Market context

Iran’s nuclear file is the key real-world event behind this market, and the 27% implied YES suggests traders think a public pledge to stop enrichment is possible but still far from the base case. That scepticism is rooted in the post-JCPOA record: after the US quit the deal in 2018, Iran steadily walked back its commitments, then said in 2020 it would no longer observe any enrichment limits under the accord.[1][4]

The closest comparator is the 2015 nuclear deal itself, when Iran accepted caps on enrichment, tighter IAEA monitoring and limits at Fordow in exchange for sanctions relief.[1][5] Since then, the direction has been the opposite of what this market needs: Iran has enriched far beyond JCPOA levels, with 60% material and a stockpile that grew again in 2025, while diplomats have remained stuck on the same central question of whether enrichment can continue on Iranian soil.[5] That history makes a full public commitment to end *all* enrichment a much higher bar than a temporary pause or a technical concession.[3][5]

The main catalysts are any fresh US–Iran talks, especially if Oman or another intermediary announces a new framework, and any IAEA or UN-related developments that change the pressure on Tehran.[5] The most market-moving wording would be an explicit Iranian statement that it will end enrichment entirely, because the settlement rules count a unilateral pledge, a bilateral deal, or an agreement with Israel or the US, and any pledge made before 31 December 2026 qualifies even if implementation comes later. Absent that kind of language, routine diplomatic rounds are more likely to move the price only modestly.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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