Traders assign a 70% probability against Donald Trump wearing a yarmulke by the end of 2026 because no major diplomatic visits, White House ceremonies, or Jewish community events requiring traditional headwear have been scheduled or signaled in the first half of the year. Historical instances occurred during the 2017 Western Wall visit and a 2019 executive order signing on antisemitism, both tied to specific foreign policy or ceremonial contexts. Recent developments, including a May 2026 proclamation for Jewish American Heritage Month, produced no photographic evidence or announcements indicating a shift in practice. Without comparable catalysts or confirmed travel to Israel, the market reflects the low baseline likelihood of such an occurrence absent new triggers before December 31.