You have a $50,000 portfolio consisting of Intel, GE, and Con Edison. You put $20,000 in Intel, $12,000 in GE, and the rest in Con Edison. Intel, GE, and Con Edison have betas of 1.3, 1, and .8, respectively. What is your portfolio beta?

1.048

Explanation:

First let us calculate the amount in Con Edison

= 50,000 - 20,000 - 12,000

= $18,000

To calculate the Portfolio Beta, you take the sum of the respective betas of the various stocks in the portfolio multiplied by their proportion in the portfolio.

Intel = 20,000/50,000

= 2/5

GE = 12,000/50,000

= 6/25

Con Edison = 18,000/50,000

= 9/25

Adding them up we will have

= (1.3*2/5) + (1*6/25) + (0.8*9/25)

= 1.048

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