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MBA,MCS,M.phil
Devry University
Jan-2008 - Jan-2011
MBA,MCS,M.Phil
Devry University
Feb-2000 - Jan-2004
Regional Manager
Abercrombie & Fitch.
Mar-2005 - Nov-2010
Regional Manager
Abercrombie & Fitch.
Jan-2005 - Jan-2008
The following question illustrates the APT. Imagine that there are only two pervasive macroeconomic factors. Investments X, Y, and Z have the following sensitivities to these two factors:
We assume that the expected risk premium is 4 percent on factor 1 and 8 percent on actor 2. Treasury bills obviously offer zero risk premium.
a. According to the APT, what is the risk premium on each of the three stocks?
b. Suppose you buy $200 of X and $50 of Y and sell $150 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium?
c. Suppose you buy $80 of X and $60 of Y and sell $40 of Z. What is the sensitivity of your portfolio to each of the two factors? What is the expected risk premium?
d. Finally, suppose you buy $160 of X and $20 of Y and sell $80 of Z. What is your portfolio’s sensitivity now to each of the two factors? And what is the expected risk premium?
e. Suggest two possible ways that you could construct a fund that has a sensitivity of .5 to factor 1 only. Now compare the risk premiums on each of these two investments.
f. Suppose that the APT did not hold and that X offered a risk premium of 8 percent,
Y offered a premium of 14 percent, and Z offered a premium of 16 percent. Devise an investment that has zero sensitivity to each factor and that has a positive riskpremium.
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