EAEventAlpha
Geopolitics

Will the U.S. test a nuclear weapon by September 30 2026?

4%Synced 4 Jul 2026, 02:01 UTCStable consensus-0.5pp (24h)

Recent probability movement (down 0.5pp) is moderate, with acceptable but not deep market activity.

Signal: Medium

Current

4%

24h Change

-0.5pp

7D Change

Not enough history

30D Change

Not enough history

Snapshots

7

0%25%50%75%100%30 Jun3 Jul4 Jul

Movement Read

This page helps you check whether the move is fresh, meaningful, low-confidence, or near resolution before opening the source market.

Probability is mostly stable over 24h. The recorded move is down 0.5pp. Activity is moderate — the move is plausible but not fully confirmed by deep liquidity.

Market Snapshot — read-only

Implied probabilities from synced Polymarket data. EventAlpha does not support trading.

Yes implied probability
3.6%
No implied probability
96.3%
Liquidity
$9K
Market Activity
$55K
Data Source
Polymarket
Last Synced
4 Jul 2026, 02:01 UTC
View on Polymarket

Resolution Rules

Resolves Yes if …

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.

Resolves No if …

No otherwise — if the Yes condition is not satisfied by the resolution criteria.

Important caveats

This market resolves according to the source market rules. Review the source market before relying on this interpretation.

Resolution deadline: 30 Sept 2026, 00:00 UTC

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