Will the U.S. test a nuclear weapon by December 31 2026?

Prediction markets currently give a 13% probability that Will the U.S. test a nuclear weapon by December 31 2026?. This contract trades at 13¢ on Polymarket, closing December 31, 2026.

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13¢
Bid/Ask 12/13¢·Spread 1¢·Vol $58.1·OI $30,508.339·Closes Dec 31, 2026·253d remaining
0x1b9937cd28466c68641596dacdf5c380b27041ae36a082e1b062fbc74590086b
7-day price6 snapshots · 14 regime
14¢13¢ current
Apr 813¢Apr 18

Resolution rules

This market will resolve to "Yes" if the US conducts a nuclear test by the listed date (ET). Otherwise, this market will resolve to "No". 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.

Indicators

IY (Yes) 964.9%
IY (No) 21.5%
Adj IY 482%
CRI 7
▶ Full indicator table (4)
IndicatorValue
IY (Yes)964.9%
IY (No)21.5%
Adj IY482%
CRI7

Regime

Label
neutral
Score
0.432
Spread
1¢
Computed
4/21/2026, 8:28:15 PM
Observability mediumEvent type unknown
Indicators computed 4/21/2026, 8:23:18 PM

Trade

View on polymarketsf trade 0x1b9937cd28466c68641596dacdf5c380b27041ae36a082e1b062fbc74590086b yes 100

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