Why is it physically painful to sell a stock at a loss, yet so easy to sell a winning stock too early? This phenomenon is known as the Disposition Effect, and it is the primary reason why retail investors underperform the market. This video dives into the behavioral finance theory behind this costly systematic error. We explore "Prospect Theory" and "Loss Aversion," explaining why the pain of a loss is psychologicaly twice as powerful as the pleasure of a gain, driving investors to hold onto declining assets in the desperate hope of a recovery. We also analyze: • The connection between the Disposition Effect and market anomalies like Stock Price Momentum. • Post-Earnings Announcement Drift explained. • How to measure your own "Disposition Coefficient." • Actionable strategies to achieve the "Reverse Disposition Effect," including binding stop-loss orders and Goals-Based Investing (GBI). Mastering your psychology is just as important as analyzing the balance sheet. #BehavioralFinance #DispositionEffect #InvestingPsychology #ProspectTheory #StockMarket #TradingMistakes #RiskManagement #StopLoss #Finance #WealthMindset