Iran agrees to end enrichment of uranium by December 31?

Platform comparison

Market context

Iran would need to make a public commitment to stop all uranium enrichment by the end of 2026, a materially stricter outcome than the 2015 JCPOA framework, which capped enrichment at 3.67% and set stockpile limits rather than ending enrichment altogether.[4][6][9] The current crowd-implied 27% YES sits below the latest prediction-market chatter on related Iran nuclear contracts, where one separate market on surrendering enriched uranium stockpiles has been quoted around the low-50s while the parallel end-enrichment market has been nearer the low-40s, implying traders see a narrower stockpile deal as more plausible than a full enrichment halt.[2][10]

Historical precedent argues for caution on a YES outcome. The JCPOA did force major reductions in enriched uranium and centrifuge capacity, but Iran later breached enrichment limits and, after the deal’s expiry in October 2025, said it was no longer bound by its terms.[4][7][14] That history matters because this market requires an explicit public agreement to end *all* enrichment, not just a temporary cap, and prior Iranian commitments have tended to preserve some domestic enrichment activity rather than eliminate it entirely.[3][11][18]

The main catalysts are diplomatic headlines: any US-Iran channel, indirect talks via European or Gulf intermediaries, or a written framework that addresses uranium disposition and enrichment limits. Recent reporting has pointed to a US official saying Iran agreed in principle to a deal involving disposal of highly enriched uranium, but that still falls short of a verified pledge to end enrichment, which is why the market can diverge from broader analyst expectations.[2][10] Traders should also watch IAEA language and any timetable for follow-up negotiations, because a framework, draft, or “in principle” understanding would count only if it includes a public agreement by Iran to cease enrichment by the deadline.[2][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.