In this video, we explore a practical application of the Capital Asset Pricing Model (CAPM) focused on calculating the individual beta of a stock within a portfolio. Using a real-world example, you will learn how to use the portfolio beta formula to find missing betas for assets like Apple, Microsoft, and Pepsico. The video breaks down the process step-by-step, emphasizing how to calculate weights based on the amount invested in each stock and how to solve for the missing variables. Whether you're in an undergrad finance course or preparing for the CFA Level 1 exam, this tutorial provides a solid foundation for mastering CAPM beta calculations.