Traders' unanimous 100% pricing on "No" for a perfect NCAA Tournament bracket stems from the complete elimination of all publicly tracked entries across platforms like ESPN, Yahoo, and Bracket Challenge, mirroring historical precedent where none have ever survived the full 63 games despite billions submitted. March Madness upsets in the first and second rounds—double-digit seeds toppling favorites like No. 1s and chalk-heavy paths—busted remaining perfects within days of tipoff, a recurring pattern driven by the tournament's volatility, seeding dynamics, and Cinderella runs. Recent Final Four developments confirm zero survivors heading into the championship, with the wisdom of crowds reflecting near-impossible 1-in-9-quintillion odds. A private, untracked bracket perfectly nailing the title game remains a theoretical outlier, though unprecedented.