Duration

face value
YTM
Coupon rate
Freq
Maturity

1000
12%
15%
Annual
5

Duration??
1
2
3
4
5

150
150
150
150
1150

bond price

PV(cfs)
133.038066
117.994179
104.651449
92.8175088
631.133382

Weight
0.12322509
0.10929085
0.09693229
0.08597123
0.58458055

1079.63458

Duration
Changing the coupon rate would change the duration. Higher coupon, lower duration and vice versa.

Settlement date
Maturity date

1-Jan-2000
1-Jan-2005

3.914117577 duration
3.49475 modified duration
3.494747836

Weight*ti
0.12322509
0.2185817
0.29079686
0.3438849
2.92290276

3.89939131

duration and vice versa.