The article explores why certain types of stocks perform differently than expected. By examining various company traits, like size and past returns, researchers found discrepancies in stock returns that current models struggle to explain. However, using a different approach involving a three-factor model, these discrepancies mostly vanish, indicating a better fit with existing asset pricing theories. The findings suggest that besides short-term return trends, most stock anomalies can be accounted for by factors beyond the traditional model. This could support the idea that rational market theories are valid explanations for these stock price patterns.