Global seismicity rates for magnitude 6.5+ events average roughly 0.3–0.5 per week worldwide, producing a statistical distribution where zero or one such quake represents the modal outcomes over any seven-day window, consistent with the market’s heaviest weighting on those results. USGS data and global catalogs show no sustained elevation in large-event frequency entering mid-June 2026 despite a cluster of M5–6+ activity around the Pacific Ring of Fire earlier in the month, including the June 8 Mindanao sequence. Because large earthquakes follow a Poisson-like process with limited short-term clustering beyond aftershocks, recent observations have not materially shifted implied probabilities for June 15–21. Ongoing USGS and international monitoring will provide the definitive count at week’s end, with any new M6.5+ event quickly updating the distribution.