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Realized rates of return Stocks A and B have the following historical returns:Year Stock A's Returns, rA Stock B's Returns, rB2001 (18.00%) (14.50%)2002 33.00 21.802003 15.00 30.50

2004 (0.50) (7.60)2005 27.00 26.30a. Calculate the average rate of return for each stock during the period 2001 through 2005.

Stock A:

Average Return =18 23 15 0.5 26

11.30%5

+ + +=

Stock B:

Average Return = 14.50 21.80 30.50 7.60 26.30 11.30%5

+ + + =

b. Assume that someone held a portfolio consisting of 50 percent of Stock A and50 percent of Stock B. What would the realized rate of return on the portfolio havebeen in each year? What would the average return on the portfolio have beenduring this period?

For 2001:

Portfolio Return = (0.5*(-18%)) + (0.5*(-14.5%) = - 16.25%

Steps are the same for all years

c. Calculate the standard deviation of returns for each stock and for the portfolio.

Please see the attached excel sheet

d. Calculate the coefficient of variation for each stock and for the portfolio.

For Stock A:

CV =Standard Deviation 20.79

1.84Average 11.3

= =

Calculations for Stock B, and for portfolio are conducted in the same manner

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e. Assuming you are a risk-averse investor, would you prefer to hold Stock A, Stock B,or the portfolio? Why?

a,b,c, & d)

kA kB Portfolio2001 (18.00%) (14.50%) (16.25%)2002 33.00 21.80 27.402003 15.00 30.50 22.752004 (0.50) (7.60) (4.05)2005 27.00 26.30 26.65

Mean 11.30 11.30 11.30Std. Dev. 20.79 20.78 20.13Coef. Var. 1.84 1.84 1.78

e. A risk-averse investor would choose the portfolio over either Stock A or StockB alone, since the portfolio offers the same expected return but with less risk.This result occurs because returns on A and B are not perfectly positivelycorrelated (rAB = 0.88).

Expected returns Stocks X and Y have the following probability distributions ofexpected future returns:Probability X Y

0.1 (10%) (35%)0.2 2 00.4 12 200.2 20 250.1 38 45a. Calculate the expected rate of return, rY, for Stock Y. (rX _ 12%.)b. Calculate the standard deviation of expected returns, _X , for Stock X. (_Y _ 20.35%.)Now calculate the coefficient of variation for Stock Y. Is it possible that mostinvestors might regard Stock Y as being less risky than Stock X? Explain.

a. =

=n

1i

iikPk .

Yk = 0.1(-35%) + 0.2(0%) + 0.4(20%) + 0.2(25%) + 0.1(45%)

= 14% versus 12% for X.

b. = =

n

1i

i

2

iP)kk( .

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2

X = (-10% - 12%)2(0.1) + (2% - 12%)2(0.2) + (12% - 12%)2(0.4)

+ (20% - 12%)2(0.2) + (38% - 12%)2(0.1) = 148.8%.

X = 12.20% versus 20.35% for Y.

CVX = X/k

X = 12.20%/12% = 1.02, while

CVY = 20.35%/14% = 1.45.

If Stock Y is less highly correlated with the market than X, then it might have alower beta than Stock X, and hence be less risky in a portfolio sense.

7-8 Yield to call Six years ago, the Singleton Company issued 20-year bonds with a 14percent

annual coupon rate at their $1,000 par value. The bonds had a 9 percent call premium,with 5 years of call protection. Today, Singleton called the bonds. Compute the realizedrate of return for an investor who purchased the bonds when they were issued and heldthem until they were called. Explain why the investor should or should not be happy thatSingleton called them.

The rate of return is approximately 15.03 percent, found with a calculator using thefollowing inputs:

N = 6; PV = -1000; PMT = 140; FV = 1090; I = ? Solve for I = 15.03%.