In: Finance
A 7.500% semiannual coupon payment bond settles on a coupon date. The tenor is 10 years. The bond's yield to maturity is 9.400%. What is the bond’s approximate modified duration (AMD)? Use yield changes of +/- 40 bps around the yield to maturity for your calculations.
| A. | 
 5.881  | 
|
| B. | 
 6.101  | 
|
| C. | 
 6.444  | 
|
| D. | 
 6.684  | 
First we calculate the price of bond at YTM = 9.40% and with yield changes of +/- 40bps i.e. (0.40%)

Formula used in excel:

Approximate Modified Duration = (V1-V2) / (2*V0*Change in yield)
Approximate Modified Duration = (902.4405 - 855.4616) / (2*878.5386*0.40%)
Approximate Modified Duration = 6.684