Trader consensus on Polymarket reflects an 89.5% implied probability of no magnitude 9.0+ earthquake before 2027, driven by the extreme rarity of such megathrust events—only five have occurred globally since 1900, per USGS records, with the last being Japan's 2011 Tohoku M9.1. Current seismic conditions show no precursory foreshocks, accelerated strain accumulation, or elevated activity on high-risk subduction zones like Cascadia, Nankai Trough, or Kamchatka, despite recent large quakes such as the 2025 Kamchatka M8.8 and April 2026 Indonesia M7.4. USGS monitoring confirms normal global patterns, with short-term probabilities near zero given typical recurrence intervals of decades to centuries; a surprise rupture remains possible but lacks supporting geophysical data. Ongoing real-time seismic networks will provide updates on any shifts.