Q4) You are considering investing in stock S and you want to know how stock S is related to the market portfolio M. Given your research, you discovered the following information: Please provide full formulas instead of using Excel.
Expected Return |
Standard Deviation |
|
Stock (S) |
15% |
25% |
Market (M) |
12% |
20% |
Risk-free |
2% |
|
Correlation of S and M |
40% |
Answer (a)
Exposure of Stock S to Market Risk : Beta of Stock S :
Beta = Correlation (S, market) x σs / σmarket
= 0.40 x 0.25 / 0.20
= 0.5
Therefore, exposure of Stock S to market risk = Beta of Stock S = 0.50
Answer (b)
~ CAPM = Riskfree Rate + Beta (Expected Market Return - Rf Rate)
= 2% + 0.50 (12% - 2%)
= 7%
CAPM Return = 7%
Expected Return of S = 15%
~Since the Expected Return > CAPM Return, Stock is Undervalued.
Answer (c)
~ Systematic Risk of Stock S:
= Standard Deviation of Market x Beta of Stock S
= 20% x 0.50
= 10%
~ Idiosyncratic Risk of Stock S:
= Standard Deviation of Stock S - Systematic Risk of Stock S
= 25% - 10%
= 15%
~ Therefore, Systematic Risk = 10%, Idiosyncratic Risk = 15%
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