The 88% market-implied probability of no megaquake (magnitude 8 or greater) by June 30 stems primarily from the statistical rarity of such events, which occur globally only about one to two times annually on average according to long-term USGS records. Recent seismic activity remains at typical background levels, with the most recent notable events limited to magnitude 6–7 quakes and no active advisories or foreshock patterns from agencies like the USGS or Japan Meteorological Agency signaling elevated short-term risk. While subduction zones such as Japan’s Nankai Trough carry long-term probabilities in the 60–90% range over decades, no model consensus or observational data points to an imminent trigger within the narrow remaining window. Continuous real-time monitoring and the next monthly seismic summaries will provide any potential updates.