The market-implied odds heavily favor no VEI ≥6 eruption in 2026 because such colossal events, which eject at least 10 km³ of material on the Volcanic Explosivity Index scale and can inject sulfur aerosols into the stratosphere, occur on average only once every 50–100 years. The most recent was Pinatubo in 1991, and current USGS, PVMBG, and Smithsonian monitoring shows only moderate ongoing activity at sites like Semeru (VEI 4 maximum historically), Kīlauea, and several Indonesian stratovolcanoes, with no signs of rapid magma chamber pressurization or caldera-scale unrest at high-risk systems such as Yellowstone or Campi Flegrei. With roughly 10 weeks left in the year, the absence of precursor signals keeps trader consensus firmly on “no.” A sudden escalation at an under-monitored arc volcano remains the main low-probability wildcard that could shift odds.