# Answer to Question #51500 in Finance for mohammed abdu

Question #51500

An investor currently holds the following portfolio:

Amount

Invested

8,000 shares of Stock A $16,000 Beta = 1.3

15,000 shares of Stock B $48,000 Beta = 1.8

25,000 shares of Stock C $96,000 Beta = 2.2

The investor is worried that the beta of his portfolio is too high, so he wants to sell

some Stock C and add Stock D which has a beta of 1.0 to his portfolio. If the investor

wants his portfolio to have a beta of 1.72, how much Stock C must he replace with

Stock D?

Amount

Invested

8,000 shares of Stock A $16,000 Beta = 1.3

15,000 shares of Stock B $48,000 Beta = 1.8

25,000 shares of Stock C $96,000 Beta = 2.2

The investor is worried that the beta of his portfolio is too high, so he wants to sell

some Stock C and add Stock D which has a beta of 1.0 to his portfolio. If the investor

wants his portfolio to have a beta of 1.72, how much Stock C must he replace with

Stock D?

Expert's answer

8,000 shares of Stock A $16,000

Beta = 1.3

15,000 shares of Stock B $48,000

Beta = 1.8

25,000 shares of Stock C $96,000

Beta = 2.2

Stock D has a beta of 1.0.

If the investor wants his portfolio to have a beta of 1.72, he needs to replace Stock C with Stock D in such way:

1.72 = (1.3*16,000 + 1.8*48,000 + 2.2*(96,000 - x) + 1*x)/160,000

20,800 + 86,400 + 211,200 - 1.2x = 275,200

318,400 - 1.2x = 275,200

1.2x = 43,200

x = 36,000

So, the investor should sell 36,000*96,000/25,000 = 9,375 shares of Stock C to buy shares of Stock D

Beta = 1.3

15,000 shares of Stock B $48,000

Beta = 1.8

25,000 shares of Stock C $96,000

Beta = 2.2

Stock D has a beta of 1.0.

If the investor wants his portfolio to have a beta of 1.72, he needs to replace Stock C with Stock D in such way:

1.72 = (1.3*16,000 + 1.8*48,000 + 2.2*(96,000 - x) + 1*x)/160,000

20,800 + 86,400 + 211,200 - 1.2x = 275,200

318,400 - 1.2x = 275,200

1.2x = 43,200

x = 36,000

So, the investor should sell 36,000*96,000/25,000 = 9,375 shares of Stock C to buy shares of Stock D

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