Consider a three-year bond with 6% annual coupon (paid semi-annually). Suppose the yield on the bond is 8% per year with continuous compounding. What is the duration of the bond (in years)? (required precision: 0.01 +/- 0.01)
Following formula's are used to calculated duration of the bond;
Discount factor = e^(-0.08*t)
Face value = $1000
coupon = 3% of 1000 = $30
PV of coupon = discount factor*coupon
Price of bond = sum of PV of coupons = $810.23
weight = PV of coupon/Price of bond
Duration = time in year of bond paid*weight
duration of bond = sum of duration of all coupon = 2.78 years
Year | discount factor | coupon | PV of coupon | Weight | duration |
0.5 | 0.9608 | $ 30.00 | $ 28.82 | 0.03 | 0.02 |
1 | 0.9231 | $ 30.00 | $ 27.69 | 0.03 | 0.03 |
1.5 | 0.8869 | $ 30.00 | $ 26.61 | 0.03 | 0.04 |
2 | 0.8521 | $ 30.00 | $ 25.56 | 0.03 | 0.05 |
2.5 | 0.8187 | $ 30.00 | $ 24.56 | 0.03 | 0.07 |
3 | 0.7866 | $ 1,030.00 | $ 810.23 | 0.86 | 2.58 |
Price | $ 943.48 | Duration | 2.78 |
Consider a three-year bond with 6% annual coupon (paid semi-annually). Suppose the yield on the bond...
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