Investments - Quiz 4 Solution | Massachusetts Institute of Technology - Edubirdie

University:
Massachusetts Institute of Technology
Course:
15.501/516 | Accounting
Academic year:

2023
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264

Pages:

1
Author:

Briscianitx9

Quiz # 4 Arbitrage Pricing Theory Suppose that there are two independent economic factors F1 and F2. The risk-free rate is 6%, and all stocks have independent firm-specific components with a standard deviation of 45%. The following are well-diversified portfolios: Portfolio Beta on F1 A B 2.0 -0.2 1.5 2.2 Beta on F2 Expected Return 31 27 Table 1: Scenarios for 2 stocks with 2 Factors What is the expected return-beta relationship in this economy? Solution BKM ch. 11, p. 335 # 2 E ( rp ) = rf + β1, p E  ( r1 ) − rf  + β 2, p E  ( r2 ) − rf  We need to find the risk premium [rp] for each of the two factors: rp1 = [E(r1)-rf] and rp2 = [E(r2)-rf] To do so, the following system of two equations with to unknowns must be solved: 21 = 6 + 1.5 x rp1 + 2.0 x rp2 27 = 6 + 2.2 x rp1 + (-0.2) x rp2 The solution to this set of equation is rp1 = 10% and rp2 = 5% Thus, the expected return-beta relationship is: E ( rp ) = 6% + β1, p ⋅10% + β 2, p ⋅ 5% 1

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