Financial Concepts: Capital Asset Pricing Model (CAPM)
AAA
  1. Financial Concepts: Introduction
  2. Financial Concepts: The Risk/Return Tradeoff
  3. Financial Concepts: Diversification
  4. Financial Concepts: Dollar Cost Averaging
  5. Financial Concepts: Asset Allocation
  6. Financial Concepts: Random Walk Theory
  7. Financial Concepts: Efficient Market Hypothesis
  8. Financial Concepts: The Optimal Portfolio
  9. Financial Concepts: Capital Asset Pricing Model (CAPM)
  10. Financial Concepts: Conclusion

Financial Concepts: Capital Asset Pricing Model (CAPM)


Pronounced as though it were spelled "cap-m", this model was originally developed in 1952 by Harry Markowitz and fine-tuned over a decade later by others, including William Sharpe. The capital asset pricing model (CAPM) describes the relationship between risk and expected return, and it serves as a model for the pricing of risky securities.

CAPM says that the expected return of a security or a portfolio equals the rate on a risk-free security plus a risk premium. If this expected return does not meet or beat our required return, the investment should not be undertaken.


The commonly used formula to describe the CAPM relationship is as follows:

Required (or expected) Return = RF Rate + (Market Return - RF Rate)*Beta

For example, let's say that the current risk free-rate is 5%, and the S&P 500 is expected to return to 12% next year. You are interested in determining the return that Joe's Oyster Bar Inc (JOB) will have next year. You have determined that its beta value is 1.9. The overall stock market has a beta of 1.0, so JOB's beta of 1.9 tells us that it carries more risk than the overall market; this extra risk means that we should expect a higher potential return than the 12% of the S&P 500. We can calculate this as the following:

Required (or expected) Return = 5% + (12% - 5%)*1.9
Required (or expected) Return = 18.3%

What CAPM tells us is that Joe's Oyster Bar has a required rate of return of 18.3%. So, if you invest in JOB, you should be getting at least 18.3% return on your investment. If you don't think that JOB will produce those kinds of returns for you, then you should consider investing in a different company.

It is important to remember that high-beta shares usually give the highest returns. Over a long period of time, however, high beta shares are the worst performers during market declines (bear markets). While you might receive high returns from high beta shares, there is no guarantee that the CAPM return is realized. Financial Concepts: Conclusion

  1. Financial Concepts: Introduction
  2. Financial Concepts: The Risk/Return Tradeoff
  3. Financial Concepts: Diversification
  4. Financial Concepts: Dollar Cost Averaging
  5. Financial Concepts: Asset Allocation
  6. Financial Concepts: Random Walk Theory
  7. Financial Concepts: Efficient Market Hypothesis
  8. Financial Concepts: The Optimal Portfolio
  9. Financial Concepts: Capital Asset Pricing Model (CAPM)
  10. Financial Concepts: Conclusion
RELATED TERMS
  1. Premium to Surplus Ratio

    Net premiums written divided by policyholders’ surplus. The premium ...
  2. Current Liquidity

    The total amount of cash and unaffiliated holdings compared to ...
  3. Developed To Net Premiums Earned

    The ratio of developed premiums to net premiums earned over a ...
  4. Return On Policyholder Surplus

    The ratio of an insurance company’s net income to its policyholder ...
  5. Discretionary Investment Management

    A form of investment management in which buy and sell decisions ...
  6. Account Minimum

    The minimum balance required to be maintained in an investment ...
  1. What are the most common issues with Serial Correlation in stocks?

    Read about the concept of serial correlation in stock returns, and learn why market analysts are divided about the efficacy ...
  2. How effective is creating trade entries after spotting a Sanku (Three Gaps) Pattern?

    Learn about the sanku, or three gaps, pattern including formation, interpretation and additional confirmation necessary to ...
  3. How do I build a profitable strategy when spotting a Rounding Bottom pattern?

    Understand the basics of the rounding bottom pattern, also known as the saucer, including formation and optimal entry and ...
  4. How do I build a profitable strategy when spotting a Runaway Gap pattern?

    Understand the basics of the runaway gap and how to utilize this pattern to establish profitable trade strategies, including ...

You May Also Like

Related Tutorials
  1. Fundamental Analysis

    Ethical Investing Tutorial

  2. Bonds & Fixed Income

    Investing For Safety and Income Tutorial

  3. Economics

    American Depositary Receipt Basics

  4. Economics

    Macroeconomics

  5. Investing Basics

    Capital Budgeting

Trading Center