CAPM  What is the Capital Asset Pricing Model  Summary and Q&A
TL;DR
The Capital Asset Pricing Model (CAPM) is an investment theory that shows the relationship between expected returns and market risk in an asset. It can be used to calculate the weighted average cost of capital (WACC) and value stocks using discounted cash flow.
Questions & Answers
Q: What is the Capital Asset Pricing Model (CAPM) and what does it show?
The CAPM is an investment theory that illustrates the relationship between expected returns and market risk in an asset. It helps investors understand the potential returns based on the level of risk associated with an investment.
Q: How is beta calculated and what does it represent?
Beta measures the movement of an asset compared to the overall market. It indicates how the asset's price is expected to change in response to changes in the market. A beta of 1 means the asset moves in sync with the market, while a beta greater than 1 suggests higher volatility.
Q: How can CAPM be used to calculate the weighted average cost of capital (WACC)?
CAPM can be used to determine the cost of equity, which is one component of WACC. By calculating the cost of equity using CAPM, and combining it with the cost of debt, investors can determine the WACC for a company. WACC is used as a discount factor for valuing a company's cash flows.
Q: What are the limitations of using CAPM?
CAPM relies on several assumptions, such as efficient markets and rational investor behavior, which may not always hold true in reality. Additionally, the model assumes a linear relationship between risk and return, which may not accurately represent all assets or markets.
Summary & Key Takeaways

The CAPM is an investment theory that explains the relationship between expected returns and market risk in an asset.

CAPM has three inputs: the riskfree rate, beta (which measures the asset's movement compared to the market), and the expected return of the stock market.

CAPM can be used to calculate the WACC of a company and value stocks using discounted cash flow.