Question

Consider a 20-year maturity, 9% annual coupon bond trading at a price of 134.41. When rates...

  1. Consider a 20-year maturity, 9% annual coupon bond trading at a price of 134.41. When rates rise 0.001, price reduces to 132.99, and when rates decrease by 0.001, price goes up to 135.85. What is the modified duration of the bond?

Homework Answers

Answer #1
Nper 20
Annual coupon rate 9%
Par value 100
PV 134.41
YTM 6.00%
Years T NCF PV @ 6% PV x T
1 9 8.49056604 8.49056604
2 9 8.00996796 16.0199359
3 9 7.55657355 22.6697206
4 9 7.12884297 28.5153719
5 9 6.72532356 33.6266178
6 9 6.34464486 38.0678692
7 9 5.98551402 41.8985982
8 9 5.64671134 45.1736907
9 9 5.32708617 47.9437755
10 9 5.02555299 50.2555299
11 9 4.74108773 52.151965
12 9 4.47272427 53.6726913
13 9 4.2195512 54.8541656
14 9 3.98070868 55.7299215
15 9 3.75538555 56.3307832
16 9 3.54281655 56.6850648
17 9 3.34227977 56.818756
18 9 3.15309412 56.7556942
19 9 2.97461709 56.5177248
20 9+100 =109 33.9867152 679.734305
134.409764 1511.91275
Macaulay Duration = $1511.91/134.41 11.25
Modified Macaulay Duration  = 11.25/(1+6%) 10.61
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