A bond has a PAR value of $1,000 with a 12% coupon and a 4% semi-annually compounded yield. What is
the bond’s duration given that there are two years left to maturity?
Answer : Below is the Table showing Calculation of Duration :
Year (Weights) | Cah Flows | PVF @2% | Discounted Cash Flows | Weights * Discounted Cash Flows |
1 | 60 | 0.980392157 | 58.82352941 | 58.82352941 |
2 | 60 | 0.961168781 | 57.67012687 | 115.3402537 |
3 | 60 | 0.942322335 | 56.53934007 | 169.6180202 |
4 | 1060 | 0.923845426 | 979.2761516 | 3917.104606 |
Total | 1152.309148 | 4260.88641 |
Duration = Sum of ( Weights * Discounted Cash Flows) / Discounted Cash Flows
= 4260.88641 / 1152.309148
= 3.70 half years or 1.85 years (3.70 / 2)
Note : Since it has given that yield is semiannually compounded it has been assumed that coupon also paid semiannually.
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