No leads at 76% because none of the four qualifying events—a U.S. Category 5 hurricane landfall, VEI-6 or greater volcanic eruption, magnitude 8.5+ earthquake, or 10-kiloton meteor strike—have occurred through mid-June 2026. Historical frequency supports this positioning: Category 5 U.S. landfalls average fewer than one per decade, great earthquakes above 8.5 occur globally roughly once every several years on average, and VEI-6 eruptions are even rarer. Current National Hurricane Center outlooks show no immediate major threats, while USGS and Smithsonian monitoring report no anomalous seismic or volcanic signals meeting the thresholds. With more than half the year remaining, traders are pricing in the continued low likelihood of these tail events materializing before year-end.