Traders assign a 69.5% implied probability to zero VEI ≥4 eruptions for the full year 2026, reflecting the rarity of these events and the absence of any confirmed cases through mid-2026. Globally, VEI 4 eruptions—defined by ejecta volumes of at least 0.1 km³ and plume heights typically exceeding 10 km on the Volcanic Explosivity Index—occur on average only a few times per decade, yielding an expected annual rate well below one. Smithsonian Global Volcanism Program records show dozens of smaller eruptions active in 2026 but list no VEI 4+ events, including the notable May submarine activity at Titan Ridge in the Bismarck Sea, where plumes reached roughly 3 km and produced pumice rafts without meeting higher VEI thresholds. With roughly five months remaining, the low base rate and lack of unrest at high-risk systems continue to favor zero as the dominant outcome, while probabilities for one or more remain discounted due to the infrequency of large explosive episodes.