spread duration understand, example, cannot, could

willsucceed

what is spread duration?

I know spread,and I know duration
but I cannot understand spread duration

could anyone give me an example to clarify?

Iginla2011

It's the same as portfolio duration when there are non-treasuries in the portfolio.

Analti_Calte

If you know duration, just subtitute "Interest Rate" with "Spread over a treasury of the same maturity".

Note the LOS only states "Explain the importance of spread duration". So don't get too bogged down by it.

infinitybenzo

Yes, it's the price sensitivity of a non-treasury bond to 100 bps change in spread (over treasuries).