久期:计算 Duration Calculation B C D G Time until PV of CF Column(c) Payment (Discount rate times Period(Years) Cash Flow 5% per period) Weight Column(F) 4 A.8% coupon bond 0.5 40 38095 0.0395 0.0197 10 40 36.281 0.0376 0.0376 34.554 0.0358 0.0537 1040 855611 08871 1.7741 964.540 0000 1852 10 BZero-coupon 0.5 000 00000 0.0000 0.000 0.0000 0.0000 315 0.000 0.0000 0.0000 4201002202 1.0000 2.0000 822.702 1.0000 2.0000 16 Semiannual int rate: 0.05 T 18 Weight =Present value of each payment column E) divided by the bond price.16-9