This problem explores the idea behind APT and factor models. Suppose the statistical properties of all...
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This problem explores the idea behind APT and factor models. Suppose the statistical properties of all asset returns are described by a single factor model where the market is the single factor. In particular, you can assume that there is a market portfolio and a risk-free asset that both satisfy the factor model equation in class (and in BKM). In parts (a) through (c), consider a well-diversified portfolio A with BA=0.4 and a=2.0. a) (9 pts) Combine this portfolio with the market portfolio to form a zero-beta portfolio. Calculate the weightings and alpha of your zero-beta portfolio. [Hint: what are the alpha and beta of the market portfolio?] b) (9 pts) Calculate the systematic, idiosyncratic and total risk of your zero-beta portfolio in (a)? c) (7 pts) In light of your answers to (a) and (b), construct a zero-cost (riskless) arbitrage strategy using the zero-beta portfolio and the risk-free asset. [Recall that a zero-cost arbitrage strategy will involve buying one asset and short selling another in equal amounts]. What is the alpha of your zero-cost strategy? How much money would an investor invest in such a strategy? This problem explores the idea behind APT and factor models. Suppose the statistical properties of all asset returns are described by a single factor model where the market is the single factor. In particular, you can assume that there is a market portfolio and a risk-free asset that both satisfy the factor model equation in class (and in BKM). In parts (a) through (c), consider a well-diversified portfolio A with BA=0.4 and a=2.0. a) (9 pts) Combine this portfolio with the market portfolio to form a zero-beta portfolio. Calculate the weightings and alpha of your zero-beta portfolio. [Hint: what are the alpha and beta of the market portfolio?] b) (9 pts) Calculate the systematic, idiosyncratic and total risk of your zero-beta portfolio in (a)? c) (7 pts) In light of your answers to (a) and (b), construct a zero-cost (riskless) arbitrage strategy using the zero-beta portfolio and the risk-free asset. [Recall that a zero-cost arbitrage strategy will involve buying one asset and short selling another in equal amounts]. What is the alpha of your zero-cost strategy? How much money would an investor invest in such a strategy?
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a To form a zerobeta portfolio we need to combine Portfolio A with the market portfolio in such a wa... View the full answer
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Financial reporting, financial statement analysis and valuation a strategic perspective
ISBN: 978-0324789416
7th Edition
Authors: James M Wahlen, Stephen P Baginskl, Mark T Bradshaw
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