Traders assign a 93%+ implied probability to no magnitude 9.0 or greater earthquake before 2027 primarily because such megathrust events remain exceptionally rare on global scales, with USGS historical catalogs documenting only five instrumentally recorded cases since 1900 and typical recurrence intervals of decades to centuries across major subduction zones. Recent 2026 seismicity monitored by the USGS has produced several magnitude 7–7.8 events, including sequences off Indonesia and the Philippines, yet none approach the threshold or show foreshock patterns signaling full-margin rupture. The narrow remaining time window through year-end further lowers odds, consistent with base-rate estimates placing annual global M9+ probability well below 10%. A realistic challenge could arise from an unanticipated multi-segment failure in zones like Cascadia, though paleoseismic data and current strain monitoring provide no supporting indicators.