10.0 or above earthquake before 2027?

Traders currently price "No" at 99% for "10.0 or above earthquake before 2027?". The market has traded $790K in total volume and resolves Dec 31, 2026. USGS assessments establish that magnitude 10.0 or larger earthquakes cannot occur because no known fault is long enough to release the required energy, with the theoretical upper limit near 9.6–9.7 on the largest subduction zones. The 9.5 Valdivia event in 1960 remains the historical maximum, and 2026 seismic activity shows only typical magnitudes well below 8.0. With roughly four months remaining until 2027, the absence of any mechanism or observational data supporting such an extreme release underpins the 99.2% market-implied probability for “No.” Only an unforeseen revision in global fault-length estimates or a fundamental shift in magnitude scaling could alter this outcome.

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