This study aims to identify the model of capital asset pricing (CAPM), which occupies a privileged positionin the stock market because it is one of the analysis tools that take into account the relationship betweenreturn and risk in securities and capital investments in general. Which is considered one of the mostimportant discoveries in the modern financial economy where despite the many criticisms of this model, thebasic model has simplicity, speed and ease. This feature has kept this model in use today and on a largescale by most specialists in the financial field.