The US-Iran nuclear negotiations represent one of the most significant geopolitical issues facing global powers in 2026. The original Joint Comprehensive Plan of Action (JCPOA) was signed in 2015 but was withdrawn from by the Trump administration in 2018, creating years of tension, economic sanctions, and stalled diplomatic relations. The Biden administration has pursued renewed diplomatic re-engagement with Iran to return to substantive nuclear negotiations. This market questions whether a comprehensive nuclear deal will be finalized and formally agreed upon by June 30, 2026. Current market odds of 85% YES suggest strong investor expectation that negotiations will successfully conclude within this timeframe, though significant obstacles remain including sanctions relief mechanisms, inspections protocols, and regional tensions involving Israel and other Middle Eastern actors. The high conviction reflected in the pricing indicates that market participants view a nuclear deal as more likely than unlikely. Recent geopolitical developments and public statements from both sides have moved trading odds gradually upward, suggesting growing market confidence in negotiation success.