Ever wonder why stock prices swing wildly even when companies seem stable? In this deep dive, we uncover the real forces behind stock price movements. We explore the "excess volatility puzzle," break down the role of Street Earnings versus GAAP earnings, and explain why traditional valuation methods might not tell the full story. Learn how investor psychology, expectations, and hidden metrics can impact stock valuation—and discover how Street Earnings can give you a clearer picture of a company’s true performance.