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Calculation of Percentage Change in Bonds Price when Interest Rate Changes

Question

What are the duration and modified duration of a seven-year, 3.5 percent coupon rate, annual coupon payment, $1000 par value government note priced today to yield 3 percent to maturity (use the text formulas or Excel’s Duration and MDuration functions)?  What is the convexity of this instrument?  [Recall that Bonds and Bond Properties.xls illustrates these calculations.]  Using one of the following approximation formulas with yield data in decimal form,

[if text formula] % Change in Price 100 (-1.0 Duration (YieldNew-YieldOld)/(1+YieldOld)),

[if Excel function]  % Change in Price 100 (-1.0 MDuration (YieldNew-YieldOld)),

what is the approximate percentage change in this bond's price if yields on comparable securities rise to 4 percent?  What is the actual percentage change in this bond's price if yields on comparable securities rise to 4percent (use a financial calculator or Excel’s PV function)?

Summary

This question belongs to finance and discusses about Macaulay duration and modified duration of bonds.

Total word count: 71

 

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    Giuseppe

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