Kalshi traders see odds rising that a U.S.-Iran nuclear deal will be reached by 2027

• Kalshi traders place 47% odds on a deal by September 2026, while Polymarket traders are more optimistic at 65% for a deal before 2027
• The Axios report indicated countries are nearing a framework for nuclear negotiations, potentially including a moratorium on Iranian nuclear enrichment as part of a broader war-ending agreement
• Market sentiment has fluctuated significantly, with current odds higher than pre-Axios levels but lower than the April 17 peak when deal optimism was strongest

Summary: U.S.-Iran Nuclear Deal Odds Rise on Prediction Markets

Key Developments

Traders on prediction market platform Kalshi increased the probability of a U.S.-Iran nuclear deal being reached by 2027 to 58%, following an Axios report Wednesday indicating the two countries are nearing an agreement to end the Middle East conflict. Traders also see a 47% chance of a deal by September.

Market Context

The current odds represent an uptick from levels before the Axios report but remain below mid-April peaks, when optimism was higher. On April 17, traders placed over 70% odds on a nuclear deal by June. Polymarket traders show more optimism, pricing in 65% odds for a deal before 2027.

Deal Structure

According to Axios, while the countries are close to an agreement on ending the war, they have only reached a framework for nuclear negotiations. A potential war-ending deal could include a moratorium on Iranian nuclear enrichment. Iran confirmed ongoing discussions Wednesday, though neither country provided specific updates Thursday.

Platform Details

Kalshi's event contract resolves to "yes" if the U.S. announces, signs, or accepts a deal with Iran regarding its nuclear program. The platform has a commercial relationship with CNBC, including customer acquisition and a minority investment.

Market Implications

The shifting probabilities on prediction markets reflect evolving geopolitical sentiment and could signal trader expectations about regional stability and potential impacts on energy markets and defense sectors.