Question

Given the following three assets, determine whether an arbitrage opportunity exists according to the arbitrage pricing...

Given the following three assets, determine whether an arbitrage opportunity exists according to the arbitrage pricing theory. If so, please calculate the excess return of the arbitrage portfolio; if there is no arbitrage opportunity, please enter zero as your answer. (Assume the weight in A is standardized to 1 or -1 depending on the position)
Answers must be entered with 2 decimal places and no dollar signs , e.g. 6 as 6.00; 32.346 as 32.35.

Asset

E(r) (%)

Beta

A

9

1.0

B

14

1.4

C

3

0.0

The arbitrage excess return is ?

Homework Answers

Answer #1

The existence of arbitrage opportunities can be tested by calculating their respective Treynor ratios.

A: (9.0% - 3.0%) / 1 = 6%

B: (14.0% - 3.0%) / 1.4 = 7.85%

C: (3.0% - 3.0%) / 0 = 0%

as the Treynor (A) and Treynor(C) is lower than the Treynor (B) = 7.85;

i.e., our arbitrage is to buy the "cheap" Portfolio B (with the higher Treynor) and sell the "expensive" blend of Portfolios (A) and (C).

Arbitrage Excess Return:

Expected Return from B: By CAPM 3% + (9% - 3%) * 1.4 = 11.4

Expected Return from B = 14%

Excess Return: 14% - 11.4% = 2.6%

Feel free to ask any Query in Comment Section

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