Trader consensus prices "No" at 80% implied probability for a magnitude 8.0+ megaquake worldwide by June 30, reflecting the events' rarity—averaging one annually per USGS historical data—with none recorded in 2026 to date despite four M7.0+ quakes, including a M7.4 thrust event on April 20 off Miyako, Japan. That subduction zone rupture triggered a Japan Meteorological Agency advisory citing a brief 1% chance (versus 0.1% baseline) of an M8+ along the Japan Trench or Nankai Trough within the following week due to stress changes, but no escalation occurred and the window passed. Absent reliable short-term precursors like foreshock swarms in high-hazard zones such as Cascadia or Sumatra, seismic monitoring sustains low odds; continuous USGS updates through late June could shift sentiment amid inherent forecasting uncertainty.