请问在没有给定价格的情况下可以认定债券价格是100吗？谢谢

问题如下：

A bond has a duration of 6.5 and a convexity of 198, if the yield of the bond increase by 10 basis point, the price of the bond will ?

选项：

A.

decrease by 0.64%.

B.

increase by 0.64%..

C.

decrease by 0.65%$-1.54\mathrm{}\%$.

D.

increase by 0.65%$-1.54\mathrm{}\%$.

解释：

A is correct

考点：Bond Price Change Using Both Duration and Convexity

解析：

$△{\text{BV}}_{+}\%\approx [-6.5\times 0.001\times 100]+[(\frac{1}{2})\times 198\times {(0.001)}^2\times 100]=-0.64\mathrm{}\%$

$\triangle P=-MDur\times\triangle r+\frac12\times C\times\triangle r^2=-6.5\times0.0010+\frac12\times198\times0.0010^2=-0.64\%$

The minus sign means decrease,So A is correct.

已知Duration=6.5，convexity=198，若利率上升10bp，求债券价格的变化？

选A，债券价格下降0.64%。