**Traders assign only a 6.5% chance of a magnitude 9.0+ “megaquake” occurring anywhere on Earth by June 30, 2026, reflecting the extreme rarity of such events and the absence of any credible short-term precursors.** Megaquakes of this scale typically occur only once every 10–20 years globally, driven by sudden rupture along major subduction zones after centuries of strain accumulation. With just 15 days remaining, the base-rate probability is vanishingly small. Authoritative sources such as the USGS emphasize that earthquakes cannot be predicted days or weeks in advance; only long-term probabilistic forecasts exist. Recent seismic activity reinforces this view. The strongest 2026 event so far was a magnitude 7.8 offshore the Philippines on June 8, well below megaquake thresholds, while earlier M7.4–7.5 quakes in Japan and Tonga produced only localized elevated aftershock risks that have since subsided. No ongoing slow-slip events, unusual foreshock swarms, or monitoring alerts from agencies like the USGS or Japan Meteorological Agency indicate an imminent M9+ rupture. Realistic scenarios that could still shift odds include an extremely rare foreshock-mainshock sequence in a high-strain subduction zone (e.g., Nankai Trough or Cascadia), where a large precursor rapidly loads the fault to failure. However, such chains are statistically uncommon, and current global seismic networks show no supporting signals. The market’s strong “No” consensus therefore rests on both historical frequency and the lack of any observable trigger in the narrow remaining window.