The U.S. Treasury yield curve has been inverted for over 500 days, a condition historically associated with impending economic downturns and subsequent stock market crashes exceeding 50%. This inversion has occurred only three times before: in 1929, 1974, and 2008. The current inversion has now reached 656 days, making it one of the longest and deepest in history, typically followed by an aggressive steepening move. Despite this prolonged inversion, a recession has yet to materialize, raising questions about whether traditional economic indicators still hold predictive power.