**U.S. nuclear testing policy remains shaped by the voluntary moratorium in place since 1992, with the U.S. relying on the Science-Based Stockpile Stewardship Program for annual certifications of arsenal safety and reliability without explosive tests.** President Trump’s October 2025 social media directive to resume testing “on an equal basis” with Russia and China triggered market attention, but Energy Secretary Chris Wright and other officials quickly clarified that activities would involve subcritical experiments, hydrodynamic tests, and non-critical system checks rather than nuclear-yield detonations. U.S. accusations of low-yield Chinese activity in 2020 and Russian preparations have sustained debate, yet no full-scale U.S. explosive test has occurred. Nevada state opposition, congressional proposals to codify the moratorium, and the absence of new presidential directives or technical requirements have kept implied probabilities low. Scheduled lab certifications, budget reviews for the National Nuclear Security Administration, and any further diplomatic exchanges with nuclear peers represent the main near-term variables that could influence trader assessments of whether an explosive test occurs by late 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedU.S. nuclear test by...?
$794,203 Vol.
September 30, 2026
1%
December 31, 2026
5%
$794,203 Vol.
September 30, 2026
1%
December 31, 2026
5%
A nuclear test is defined as the intentional non-combat detonation of a device by the US that produces a nuclear chain reaction (fission or fusion), regardless of yield.
Accidents, radiological dispersal devices (bombs that spread radioactive material using conventional explosives such as "dirty bombs"), or actions by third parties will not count toward this market's resolution.
Tests not explicitly claimed by US may still qualify if a clear consensus of credible reporting attributes the nuclear detonation to US. For example, an unclaimed nuclear test analogous to the 1979 "Vela Incident" would count if credible reporting attributes it to the US.
The resolution source for this market will be a broad consensus of credible reporting.
Market Opened: Mar 31, 2026, 3:32 PM ET
Resolver
0x65070BE91...A nuclear test is defined as the intentional non-combat detonation of a device by the US that produces a nuclear chain reaction (fission or fusion), regardless of yield.
Accidents, radiological dispersal devices (bombs that spread radioactive material using conventional explosives such as "dirty bombs"), or actions by third parties will not count toward this market's resolution.
Tests not explicitly claimed by US may still qualify if a clear consensus of credible reporting attributes the nuclear detonation to US. For example, an unclaimed nuclear test analogous to the 1979 "Vela Incident" would count if credible reporting attributes it to the US.
The resolution source for this market will be a broad consensus of credible reporting.
Resolver
0x65070BE91...**U.S. nuclear testing policy remains shaped by the voluntary moratorium in place since 1992, with the U.S. relying on the Science-Based Stockpile Stewardship Program for annual certifications of arsenal safety and reliability without explosive tests.** President Trump’s October 2025 social media directive to resume testing “on an equal basis” with Russia and China triggered market attention, but Energy Secretary Chris Wright and other officials quickly clarified that activities would involve subcritical experiments, hydrodynamic tests, and non-critical system checks rather than nuclear-yield detonations. U.S. accusations of low-yield Chinese activity in 2020 and Russian preparations have sustained debate, yet no full-scale U.S. explosive test has occurred. Nevada state opposition, congressional proposals to codify the moratorium, and the absence of new presidential directives or technical requirements have kept implied probabilities low. Scheduled lab certifications, budget reviews for the National Nuclear Security Administration, and any further diplomatic exchanges with nuclear peers represent the main near-term variables that could influence trader assessments of whether an explosive test occurs by late 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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