In: Finance
Duration is determined by
Bond price is inversely co-related with Duration, and hence as the interest rate increases, bond yield increase and bond price decrease.
However, duration is not a perfect way to measure a bond’s price change, as it indicates linear change, which is not the case and it exhibits a sloped or convex shape, which is called as convexity.
A bond is said to have positive convexity if duration rises as the yield declines.
In small change of rate, such as 1 basis point, convexity does not play important role and hence duration is sufficient to give us an accurate result of a bond price change.