For the following bond,
Par value: 1,000
Coupon rate: 8% paid annually
Time to maturity: 3 years
Interest rate: 6%
What is the modified duration?
Select one:
a. 2.6313 years
b. 1.7834 years
c. 2.1555 years
d. 3.1808 years
(1+ YTM)^n | ||||||||||
YTM | Period | Coupon payment | Coupon * corresponding period | Discounting factor | Principal | Cash flow * corresponding period | Discounted value of year weighted cash flow | Cash flow for the period | Discounted cash flow | |
6 | 1.06 | 1 | 80 | 80 | 1.06 | 80 | 75.47169811 | 80 | 75.47169811 | |
2 | 80 | 160 | 1.1236 | 160 | 142.3994304 | 80 | 71.1997152 | |||
3 | 80 | 240 | 1.191016 | 1000 | 3240 | 2720.366477 | 1080 | 906.7888257 | ||
4 | 30 | 120 | 1.26247696 | 2938.237606 | Sum of discounted CF= | 1053.460239 |
duration = (sum of discounted value of weighted year cash flow/sum of discounted value of cash flow)/(1+ytm) = (2938.237/1053.4602)/(1+.06) = 2.6313 years
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