Math Problem Statement

A stock has an expected return of 14.6 percent, the risk-free rate is 5.7 percent, and the market risk premium is 7.3 percent. What must the beta of this stock be?

Note: Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.

Solution

To find the beta (β\beta) of the stock, we use the Capital Asset Pricing Model (CAPM) formula:

E(Ri)=Rf+β(E(Rm)Rf)E(R_i) = R_f + \beta \cdot (E(R_m) - R_f)

Where:

  • E(Ri)E(R_i) = Expected return of the stock = 14.6% or 0.146
  • RfR_f = Risk-free rate = 5.7% or 0.057
  • (E(Rm)Rf)(E(R_m) - R_f) = Market risk premium = 7.3% or 0.073

Rearranging to solve for β\beta:

β=E(Ri)RfE(Rm)Rf\beta = \frac{E(R_i) - R_f}{E(R_m) - R_f}

Substitute the values:

β=0.1460.0570.073\beta = \frac{0.146 - 0.057}{0.073}

β=0.0890.073\beta = \frac{0.089}{0.073}

β=1.219\beta = 1.219

Final Answer:

β=1.219\beta = 1.219

Would you like further clarification or help with another calculation?


Related Questions:

  1. What does the beta of a stock signify in terms of risk?
  2. How does changing the market risk premium affect the beta calculation?
  3. If the risk-free rate increases, how does it impact the expected return under CAPM?
  4. How can CAPM be used to evaluate the attractiveness of an investment?
  5. How does beta affect a portfolio's overall risk?

Tip:

Always double-check your calculations and ensure units (e.g., percentages vs. decimals) are consistent for accurate results.

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Math Problem Analysis

Mathematical Concepts

Financial Mathematics
Expected Return
Market Risk Premium
Beta Calculation

Formulas

E(R_i) = R_f + β * (E(R_m) - R_f)
β = (E(R_i) - R_f) / (E(R_m) - R_f)

Theorems

Capital Asset Pricing Model (CAPM)

Suitable Grade Level

Undergraduate - Finance or Business Studies