Suppose Ice Cubes, Inc. has the following liability due in five years. The company is going to buy bonds today in order to meet the future obligation. The liability and current YTM are below.
		Amount of liability:		$ 100,000,000
		Current YTM:		7.5%
a.	At the current YTM, what is the face value of the bonds the company has to purchase today in order to meet its future obligation? Assume that the bonds in the relevant range will have the same coupon rate as the current YTM and these bonds make semiannual coupon payments.
b.	Assume that the interest rates remain constant for the next five years. Thus, when the company reinvests the coupon payments, it will reinvest at the current YTM. What is the value of the portfolio in five years?
c.	Assume that immediately after the company purchases the bonds, interest rates either rise or fall by one percent. What is the value of the portfolio in five years under these circumstances?
	One way to eliminate reinvestment risk is called immunization. Rather than buying bonds with the same maturity as the liability, the company instead buys bonds with the same duration as the liability. If you think about the dedicated portfolio, if the interest rate falls, the future value of the reinvested coupon payments decreases. However, as interest rates fall, the price of the bond increases. These effects offset each other in an immunized portfolio.
	Another advantage of using duration to immunize a portfolio is that the duration of a portfolio is simply the weighted average of the duration of the assets in the portfolio. In other words, to find the duration of a portfolio, you simply take the weight of each asset multiplied by its duration and then sum the results.

a.

Value of liability today:

$69,202,048

b, c.

Coupon payment:

$2,595,077

Original YTM

YTM decrease

YTM increase

Reinvestment YTM:

7.50%

6.50%

8.50%

Coupon rate:

7.50%

7.50%

7.50%

Year

Six-month period

Coupon payment

Value of reinvested coupons at Year 5

Value of reinvested coupons at Year 5

Value of reinvested coupons at Year 5

1

1

$2,595,077

$ 194,631

2

2

3

4

3

5

6

4

7

8

5

9

10

Future value of coupons:

Par value received:

$69,202,048

$69,202,048

$69,202,048

Total portfolio value: