Trader consensus prices "No" perfect NCAA bracket at a near-certain 98.2% implied probability, rooted in the minuscule odds—about 1 in 120 billion for the 68-team March Madness field—and no publicly tracked perfect bracket surviving the modern tournament era. Early upsets like No. 11 NC State toppling higher seeds and Cinderella runs have already busted all known perfect entries on platforms like ESPN by the end of the second round, consistent with historical patterns where bracketology experts falter early. While an improbable perfect chalk run through the Elite Eight or beyond remains mathematically possible, the crowd's wisdom underscores the inevitability of at least one unpredictable outcome derailing any flawless prediction.