The Guns Are Silent, and They're Staying That Way

The US-Iran ceasefire is holding, and it will almost certainly continue to hold through August 22. At 97%, that outcome is all but certain — not a forecast, but a near-settled conclusion backed by real money. The shooting has stopped, both sides appear willing to let it stay stopped, and the conditions that would restart open hostilities before next week are, by any honest accounting, nearly absent.

The pricing across the full range of ceasefire dates tells a coherent story. The ceasefire holding through August 25 sits at 94%, through August 31 at 90%, through September 15 at 80%, and through September 30 at 70% — a graceful decay that reflects genuine uncertainty about the longer arc, not doubt about the immediate term. The parallel Israel-Iran ceasefire contract sits at 96% through August 31, reinforcing that the regional pause is broadly intact. Meanwhile, the 60-day negotiation extension contract has collapsed to 1%, meaning the formal diplomatic scaffolding has essentially expired — but the guns haven't restarted with it. The ceasefire is surviving on its own inertia.

What makes this pricing coherent is the picture it paints of two parties with immediate incentives to stay quiet, even without a durable framework compelling them to do so. Iran has not recovered militarily or economically from whatever brought it to the table. The US has no appetite, at 18% odds, for an actual invasion. Neither side has a triggering event in hand. The Strait of Hormuz remains effectively shut — Hormuz traffic returning to normal by August 31 prices at 1%, and by September 30 at just 6% — which means the economic pressure on Iran remains intense, a powerful argument against escalation. A final nuclear deal is priced at only 10% by year's end, meaning no grand bargain is imminent, but the absence of a deal is not the same as a resumption of hostilities. The ceasefire is, for now, the equilibrium neither side is willing to disturb.

What breaks it? The scenario most likely to shatter near-term calm is an incident neither government controls: a miscalculation at sea, a proxy strike that crosses an unspoken red line, or a domestic political crisis in Tehran or Washington that demands a show of force. The Iran-Oman Hormuz Agreement contract, which could provide a face-saving off-ramp, has slipped to 54% — still a lean favorite but no longer a comfortable one. If that negotiation collapses entirely, the pressure for some form of Iranian counter-move grows. Any of these shocks could flip the remaining 3% into reality with speed that would embarrass confident forecasters.

This argument is the market's, decoded — not investment advice.