Yield Theory

Fixed Income

Duration

Duration measures a bond's sensitivity to interest-rate changes, estimating how much its price will move for a given shift in yields.

Duration is expressed in years and captures the timing of a bond's cash flows. The longer the duration, the more the bond's price swings when rates change. A bond with a duration of seven years would fall roughly 7% if yields rose one percentage point.

Longer-maturity and lower-coupon bonds carry more duration and therefore more interest-rate risk. Investors expecting rates to fall may extend duration to capture bigger price gains, while those fearing rate rises shorten it.

Duration is not limited to bonds; the concept explains why long-dated growth stocks behave like long-duration assets, falling hardest when yields climb.

Example

A long-duration bond fund can drop sharply in value during a year when interest rates rise quickly.

Duration — FAQ

What is Duration?

Duration measures a bond's sensitivity to interest-rate changes, estimating how much its price will move for a given shift in yields.

Can you give an example of Duration?

A long-duration bond fund can drop sharply in value during a year when interest rates rise quickly.

The term is free. The call is membership.

Duration is the vocabulary. Members get the monthly thesis that uses it: what changed, who could benefit, and what would prove the view wrong. $15/month or $150/year.

$15/mo or $150/yr · cancel future renewals anytime · sources included