Exam 8: The Efficient Market Hypothesis

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Consider the one-factor APT.Assume that two portfolios,A and B,are well diversified.The betas of portfolios A and B are 1.0 and 1.5,respectively.The expected returns on portfolios A and B are 19% and 24%,respectively.Assuming no arbitrage opportunities exist,the risk-free rate of return must be ____________.

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Consider the single factor APT.Portfolios A and B have expected returns of 14% and 18%,respectively.The risk-free rate of return is 7%.Portfolio A has a beta of 0.7.If arbitrage opportunities are ruled out,portfolio B must have a beta of __________.

(Multiple Choice)
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In terms of the risk/return relationship

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Consider the multifactor APT.There are two independent economic factors,F1 and F2.The risk-free rate of return is 6%.The following information is available about two well-diversified portfolios: portfolio \beta on F? \beta on F? expected return A 1.0 2.0 19\% B 2.0 0.0 12\% Assuming no arbitrage opportunities exist,the risk premium on the factor F2 portfolio should be ___________.

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The ____________ provides an unequivocal statement on the expected return-beta relationship for all assets,whereas the _____________ implies that this relationship holds for all but perhaps a small number of securities.

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Assume that stock market returns do not resemble a single-index structure.An investment fund analyzes 125 stocks in order to construct a mean-variance efficient portfolio constrained by 125 investments.They will need to calculate _____________ expected returns and ___________ variances of returns.

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Discuss the advantages of arbitrage pricing theory (APT)over the capital asset pricing model (CAPM)relative to diversified portfolios.

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The index model has been estimated for stocks A and B with the following results: RA = 0.01 + 0.8RM + eA RB = 0.02 + 1.2RM + eB ΣM = 0.20 σ(eA)= 0.20 σ(eB)= 0.10 The standard deviation for stock A is __________.

(Multiple Choice)
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The Security Risk Evaluation book published by Merrill Lynch relies on the _________ most recent monthly observations to calculate regression parameters.

(Multiple Choice)
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The index model for stock B has been estimated with the following result: RB = 0.01 + 1.1RM + eB If σM = 0.20 and R2B = 0.50,the standard deviation of the return on stock B is _________.

(Multiple Choice)
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The idea that there is a limit to the reduction of portfolio risk due to diversification is

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Which of the following is true about the security market line (SML)derived from the APT?

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The CAPM assumes that the only relevant source of risk arises from

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Consider the multifactor APT.There are two independent economic factors,F1 and F2.The risk-free rate of return is 6%.The following information is available about two well-diversified portfolios: portfolio \beta on F? \beta on F? expected return A 1.0 2.0 19\% B 2.0 0.0 12\% Assuming no arbitrage opportunities exist,the risk premium on the factor F1 portfolio should be __________.

(Multiple Choice)
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Consider the multifactor model APT with two factors.Portfolio A has a beta of 0.75 on factor 1 and a beta of 1.25 on factor 2.The risk premiums on the factor 1 and factor 2 portfolios are 1% and 7%,respectively.The risk-free rate of return is 7%.The expected return on portfolio A is __________ if no arbitrage opportunities exist.

(Multiple Choice)
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A professional who searches for mispriced securities in specific areas such as merger-target stocks,rather than one who seeks strict (risk-free)arbitrage opportunities is engaged in

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A _________ portfolio is a well-diversified portfolio constructed to have a beta of 1 on one of the factors and a beta of 0 on any other factor.

(Multiple Choice)
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Consider the multifactor APT.The risk premiums on the factor 1 and factor 2 portfolios are 5% and 3%,respectively.The risk-free rate of return is 10%.Stock A has an expected return of 19% and a beta on factor 1 of 0.8.Stock A has a beta on factor 2 of ________.

(Multiple Choice)
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Suppose the following equation best describes the evolution of β over time: Βt= 0.25 + 0.75βt-1 If a stock had a β of 0.6 last year,you would forecast the β to be _______ in the coming year.

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Which pricing model provides no guidance concerning the determination of the risk premium on factor portfolios?

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