Who Will Sign the U.S.-Iran Deal?

A signing ceremony is days away. Donald Trump announced from the Oval Office on June 11 that a deal with Iran is in pretty final shape, and that JD Vance will lead the American delegation at a ceremony expected in Europe this weekend. The market has moved fast: JD Vance sits at 56 cents, reflecting a market that read Trump’s announcement and made a call.

The contract asks who will sign the U.S.-Iran deal. JD Vance trades at $0.56 (56% implied probability). The rest of the field, spread across 18 alternatives including Steve Witkoff, Donald Trump, Marco Rubio, and Abbas Araghchi, absorbs the remaining 44 cents. The market resolves August 1, 2026. Total volume stands at $472.

How the JD Vance Contract Works

YES pays out if JD Vance is the named U.S. signatory when the deal is formally executed. NO pays if anyone else signs for the American side, or if no deal closes before August 1. The resolution body is Polymarket’s internal market resolution process, tied to the public signing event. This is a winner-take-all field: one name signs, and 18 alternatives lose.

• JD Vance (YES): $0.56 per share, 56% implied probability.
• All other candidates (NO): $0.44 per share, 44% implied probability.

The alternative field is crowded. Steve Witkoff leads the U.S. negotiating team as special envoy and has been present at every round of talks. Donald Trump could decide to attend himself. Marco Rubio holds the Secretary of State role. Any of these figures could appear on the signature line instead of Vance, which is why the market has not priced this above 60 cents.

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Market Signals: A Big Move With Shallow Water

The momentum composite tells one story: trend score of 20.78, a 1-hour change of 0.0% after an 11.5% single-day surge on June 11. That move traces directly to Trump’s Oval Office statement naming Vance as the expected signing representative. The buying was fast, decisive, and has since stopped. The market priced the news and paused to wait for confirmation.

Volume context matters here. Total traded volume is $472, and 24-hour volume is also $472. This is a brand-new position, opened on the day of the news break. Liquidity stands deep at $15,479. That gap between liquidity and volume tells you order books are loaded but conviction bets have not followed yet. The market is open; traders are watching.

• JD Vance’s price jumped 11.5% on June 11 after Trump named Vance as the likely signing representative at a European ceremony.
• The 1-hour change of 0.0% signals the surge has stalled: no new catalysts since Trump’s Oval Office statement.
• The trend score of 20.78 confirms unusually strong upward momentum, but the pause suggests traders are waiting on document finalization.
• $15,479 in liquidity versus $472 in volume: deep order books signal positioning that has not yet been fully executed.
• Related markets show context: U.S.-Iran permanent peace deal by resolution date prices at 75%, and U.S. invasion of Iran before 2027 sits at just 19%.

Lines Analysis: JD Vance and the Ceremony Question

JD Vance holds the lead for one concrete reason: Trump said so publicly. On June 11, Trump told reporters that a signing ceremony in Europe would be attended by Vance, Witkoff, and Jared Kushner. When the sitting president names the representative from the Oval Office, markets move. The math doesn’t lie: that single statement drove every cent of this market’s current pricing.

Steve Witkoff is the real challenger here. Witkoff has led the American side in every technical round of negotiations since talks began. A scenario where Witkoff signs as special envoy rather than Vance is not far-fetched. Trump has also floated attending himself. The Witkoff outcome gains ground if Trump decides protocol shifts the pen to the negotiator rather than the political principal.

• JD Vance prices higher if the signing ceremony in Europe proceeds as Trump described and Vance physically leads the U.S. delegation.
• Steve Witkoff prices higher if the signing defaults to the lead negotiator rather than the vice presidential principal.
• Donald Trump prices higher if Trump reverses his stated non-attendance and claims the ceremony himself.
• A deal collapse before August 1 sends NO sharply higher across the entire field. Iranian and Israeli officials both pushed back on Trump’s June 11 announcement.
• Abbas Araghchi is Iran’s foreign minister and the Iranian-side lead, not an American signatory candidate: his listing in this market reflects a broader interpretive question about who the resolution body will name.

The $472 in total volume is thin. Here’s what the market is missing: price discovery is incomplete. The 56% probability reflects one public statement, not a confirmed signing. Any clarification, delay, or alternate name on the final documents reprices this market fast before August 1.

LINES VERDICT

JD Vance as U.S. Signatory

Trump named Vance directly and publicly as the American representative at a European signing ceremony. That statement is the market’s entire thesis, and it is a strong one. But the deal is not yet signed, and Witkoff and Trump remain real alternatives if the ceremony structure changes before the documents close.

What the market says: At 56% implied probability, the market sees Vance as the most likely signatory but is far from certain. With resolution on August 1 and documents still being finalized as of June 12, this market will move sharply the moment a signing date, location, and confirmed attendees are announced.

Who Will Sign the U.S.-Iran Deal?

At $0.56, what does the YES price mean?

JD Vance’s $0.56 price means the market gives him a 56% chance of being the named U.S. signatory on the finalized deal. A $1.00 payout goes to correct positions if Vance signs before August 1.

What happens to the NO side if Vance does not sign?

NO at $0.44 pays out if any other figure, including Steve Witkoff, Donald Trump, or Marco Rubio, signs for the U.S., or if no deal closes before the August 1 deadline.

What would move JD Vance’s price from here?

A confirmed signing ceremony with Vance on the official U.S. delegation list pushes price toward $1.00. Any report naming a different American signatory or a deal collapse drives it toward zero.

When does this market resolve?

The contract resolves August 1, 2026. A signing event before that date triggers resolution. If no deal closes, NO pays out and all YES contracts expire worthless.

Is $472 in volume enough to trust this price?

Volume is thin at $472, but liquidity of $15,479 shows deep order books. The price reflects one major news catalyst from June 11, not sustained trading, so treat it as a directional signal rather than settled consensus.