What will the biggest earthquake be on Oct 28, 2026?
Magnitude of at least 5.6KalshiSettled Yes2,067 contracts traded
Yes
Settled Oct 28, 2026
Opening and final price only · ring: settled Yes (100%), not a trade
What moved it
The largest moves on the record and what Langbot heard or read just before each one. Timing, not cause.
Langbot has the opening and final price for this market, not the path between them.
The rules
Kalshi's rules, as the venue wrote them.
If the highest USGS-reported earthquake magnitude worldwide during Oct 28, 2026 from 12:00:00 AM through 11:59:59 PM UTC is 5.6 or higher, then the market resolves to Yes.
The determining value is the USGS-reported magnitude displayed at Expiration, preferentially moment magnitude (Mw) and otherwise the primary magnitude type reported by USGS.
If multiple earthquakes tie for the highest magnitude, all tied earthquakes count.
If USGS ComCat is unavailable at Expiration, settlement may be delayed under the Contract contingencies.
- Ticker
- KXBIGGESTQUAKE-28OCT26-5.6
- Closes
- Oct 27, 2026
- Category
- Climate and weather
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