The near-certainty among traders that no magnitude 9.0 or greater earthquake will occur before 2027 stems from the documented global recurrence rate of roughly one to three megathrust events per century, according to USGS historical catalogs spanning 1900 onward. The most recent confirmed 9.0+ event was the 2011 Tohoku rupture, with subsequent years showing only magnitude 8.0–8.8 activity such as the 2025 Kamchatka event and no precursors indicating imminent full-margin failure at major subduction zones. Strain accumulation at these faults typically requires decades to centuries for critical thresholds, and the brief remaining window through December 2026 further constrains odds. While an outlier sudden rupture in an under-monitored segment remains theoretically possible, current seismic monitoring and background rates offer little support for such an outcome before year-end.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

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