Assume that you manage a risky portfolio with an expected rate of return of 18% and a standard deviation of 34%. The T-bill rate is 4%. Your client chooses to invest 85% of a portfolio in your fund and 15% in a T-bill money market fund.
a. What is the expected return and standard
deviation of your client's portfolio? (Round your answers
to 2 decimal places.)
Expected return | % per year |
Standard deviation | % per year |
b. Suppose your risky portfolio includes the
following investments in the given proportions:
Stock A | 32% |
Stock B | 36% |
Stock C | 32% |
What are the investment proportions of your client’s overall portfolio, including the position in T-bills? (Round your answers to 2 decimal places.)
Security |
Investment Proportions |
|
T-Bills | % | |
Stock A | % | |
Stock B | % | |
Stock C | % | |
c. What is the reward-to-volatility ratio (S) of your risky portfolio and your client's overall portfolio? (Round your answers to 4 decimal places.)
Reward-to-Volatility Ratio | |
Risky portfolio | |
Client’s overall portfolio | |
Solution:
a. The expected value for the client = (T-bill money x bill rate) + (invest x expected rate of return)
Mean = (0.15 x 4%) + (0.85 x 18%)
= 0.006 + 0.153
=0.159
The expected value on the client’s portfolio = 15.9% per year
Standard deviation= invest x Standard deviationStandard deviation
= 0.85 x 34% = 0.85 x 0.34
= 0.289
The standard deviation on the client’s portfolio =28.9% per year
b. Since portfolio c is 85 percent invested in p, this means
.85 × .32 = 27.2% in Stock A,
.85 × .36 = 30.6% in Stock B,
.85 × .32 = 27.2% in Stock C.
The fraction invested in T-bills is 15%
c. The reward-to-variability ratio of your fund is given by
[E (rp) - rf]/σp
[18 - 4]/34 = 41.1765%
Your client’s portfolio offers the same reward-to-variability ratio, that is
[E (rc) - rf]/σc
[15.9 - 4]/28.9 = 41.1765%
Assume that you manage a risky portfolio with an expected rate of return of 18% and...
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