In: Accounting
Assume that the CAPM holds, the risk-free rate is 2% per year, the expected return on the market is 10% per year and that the annualized volatility (standard deviation) of market returns is 20%.
Assume that the beta of IBM is 1.0, the beta of GM is 2.0, and their respective annualized return volatilities are 25% and 80%. What is the correlation between IBM and GM returns?
Group of answer choices
0.8
0.4
-0.25
0
Risk free return | 2% | ||||
Market return | 10% | ||||
Deviation on Market return | 20% | ||||
Market return can be either 8% or 12% on apply deviation | |||||
Using CAPM expected return on IBM & GM are | IBM | GM | |||
Given Beta | 1 | 2 | |||
Expected returns under below scenario | |||||
Market rate as 10% | = | 2%+1*(10%-2%) | = | 2%+2*(10%-2%) | |
= | 10% | = | 18% | ||
Market rate as 8% | = | 2%+1*(8%-2%) | = | 2%+2*(8%-2%) | |
= | 8% | = | 0.14 | ||
= | 2%+1*(12%-2%) | = | 2%+2*(12%-2%) | ||
Market rate as 12% | = | 12% | = | 0.22 | |
Mean of expected return | 10.00% | 18.00% | |||
Standard deviation of returns Given | 25.00 | 0.80 | |||
COVARIANCE OF Expected return of IBM ,GM | |||||
(10-10)*(18-18)+(8-10)*(14-18)+(12-10)*(22-18) | |||||
= | 16.00 | ||||
CORRELATION | |||||
= | COVARIANCE | ||||
SD OF IBM * SD OF GM | |||||
= | 1600.00% | ||||
25%*80% | |||||
= | 0.8 | ||||