CAPM and portfolio return
You have been managing a $5 million portfolio that has a beta of 1.50 and a required rate of return of 16%. The current risk-free rate is 6.50%. Assume that you receive another $500,000. If you invest the money in a stock with a beta of 1.75, what will be the required return on your $5.5 million portfolio? Do not round intermediate calculations. Round your answer to two decimal places.
required return= risk-free rate +Beta*(MArket rate- risk-free rate )
Hence for $5million:
16=6.5+1.5*(MArket rate-6.5)
(16-6.5)=1.5*(MArket rate-6.5)
MArket rate=(16-6.5)/1.5+6.5
=12.833%(Approx)
Hence for $500,000;
required return= risk-free rate +Beta*(MArket rate- risk-free rate )
=6.5+1.75*(12.833-6.5)
=17.583%(Approx)
Hence required return on portfolio=Respective return*Respective investment weights
=(5,000,000/5,500,000*16)+(500,000/5,500,000*17.583)
=16.14%(Approx).
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