Answer: 8.65%
Step-by-step explanation:
First find the weights of the stocks:
Total = 320,000 + 780,000 + 1,260,000 + 2,850,000
= $5,210,000
Stock A:
= 320,000 / 5,210,000
= 6.14%
Stock B:
= 780,000 / 5,210,000
= 14.97%
Stock C:
= 1,260,000 / 5,210,000
= 24.18%
Stock D:
= 2,850,000 / 5,210,000
= 54.70%
Then calculate Portfolio Beta.
Portfolio beta = (6.14% * 1.50) + (14.97% * - 0.5) + (24.18% * 1.25) + (54.72% * 0.75)
= 0.7299
Required rate of return using Capital Asset Pricing Model (CAPM)
= Risk free rate + Beta * (Market return - risk free rate)
= 5% + 0.7299 * (10% - 5%)
= 8.65%