Historical rarity underpins the 94.7% market-implied probability of no VEI ≥6 eruption in 2026. Such events recur globally every 50–100 years on average, with the most recent (Pinatubo, 1991) occurring 35 years ago; current USGS and Smithsonian monitoring shows only modest unrest at known systems, none approaching the magma volumes or pressure thresholds required for colossal explosivity on the VEI scale. Ongoing activity remains low- to moderate-magnitude, consistent with baseline rates. While sudden escalation at a long-quiescent caldera or an unrecognized precursor at a remote volcano could still produce a VEI 6+ event before year-end, the short remaining timeframe and lack of supporting geophysical signals keep trader consensus firmly on “No.”