Iran nuclear test before 2027?: how this market works

What you need to know

This market asks a simple but serious question: will Iran actually detonate a nuclear device before the end of 2026? A Yes means Iran sets off a real nuclear explosion, on purpose, somewhere in the world. A No means that does not happen, whether because Iran lacks a working weapon, chooses not to test one, or simply runs out of time before December 31, 2026. This is not about Iran enriching uranium or building a bomb in theory; it is about a physical explosion that produces a nuclear chain reaction. The market settles Yes only if Iran deliberately detonates a nuclear device, producing an actual nuclear chain reaction, before midnight on December 31, 2026. Accidents do not count. Dirty bombs, which spread radioactive material using conventional explosives but cause no nuclear reaction, do not count. Iran does not have to publicly claim the test; if credible reporting broadly agrees that Iran did it, that is enough. The final call comes from a broad consensus of credible news sources, not a single government or agency. The main relevant headline is a statement from President Trump that the US is 'locked and loaded' on Iran, suggesting heightened tension between the two countries as of late July 2026. The other headlines provided do not appear directly related to Iran's nuclear program. There is no recent news here about Iran's enrichment levels, weapons development progress, or any test activity, so that specific picture is not clear from what was provided. At 11%, the market is clearly skeptical this happens, and the main honest uncertainty is simply whether something genuinely surprising occurs. Iran is not known to have a tested nuclear weapon, and conducting a first test is an enormous political and military step with severe international consequences. That said, uncertainty comes from the opacity of Iran's actual weapons progress, the unpredictable nature of geopolitical escalation, and the roughly five months remaining before the deadline. The question is less about two balanced sides and more about how real the tail risk of a historic surprise is.

The odds right now

• Iran nuclear test before 2027?+6.0 pts (1w)11%

Price history

How this resolves

Resolves December 31, 2026

This market will resolve to "Yes" if Iran conducts a nuclear test by December 31, 2026 11:59pm ET. Otherwise, this market will resolve to "No". Read the full resolution rules on the live market page.

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