CFAHouston Wrote:
-------------------------------------------------------
> James - That's what we all thought. However, this
> original question is referring to zero coupon
> bond.
>
> I did a search online, and it said that zero
> coupon bond duration = maturity time.
>
> I still don't get the concept of how different
> yeild zero bond with same maturity can have the
> same duration, but that's how zero coupon duation
> works.
>
> My logic was that even with non-zero bond, change
> in duration effects price, not coupon payments,
> then why zero coupon bond with different yeild can
> have same duration if thier maturity is equal.
>
>
The searches online are mostly pointing to the "old" definition of duration, which is based on Macaulay, not effective. The Macaulay duration, according to Schweser, is a less accurate interpretation of interest-rate risk than the effective duration.
Therefore, I think we should ignore what the other websites are saying, and go with the effective duration based conclusion that lower yield (coupon or no coupon) will result in higher duration.