Iran agrees to surrender enriched uranium stockpile by July 31, 2026?

The roughly one-in-five probability the market assigns to an Iranian uranium surrender by July 31 reflects a specific and uncomfortable negotiating reality: the two parties are publicly describing different deals. U.S. officials have briefed that Iran agreed in principle to dispose of its highly enriched uranium stockpile as part of a Trump-brokered framework. Iranian officials — including reporting attributed to sources close to Supreme Leader Khamenei — have said Tehran has not agreed to hand over the stockpile, that nuclear issues are excluded from the initial agreement, and that enriched uranium will not leave Iran. Both statements are presumably accurate descriptions of what each side heard in the same room. That wedge is the contract. A July 31 resolution requires not just a political breakthrough that resolves the narrative gap, but a signed, specific, inspectable mechanism — ship it abroad, downblend it, third-party escrow — that clears whatever resolution bar Polymarket applies to "surrenders." The practical questions around mechanism and verification have been explicitly deferred to a second-stage process by U.S. officials themselves. Deferral to a second stage is not July 31. The date curve tells the cleaner story: the December 31 contract trades at roughly double the July 31 probability, implying traders see the uranium handover as a real possibility eventually — just not on the current negotiating timeline. July 31 is priced as the tail of a process that is still in its high-level, face-saving phase. For this contract to resolve Yes, Khamenei would need to reverse a publicly stated position, agree to a specific physical disposition mechanism, and execute it — all within seven weeks of talks that haven't yet resolved what "surrender" means.