求问关于OAS的理解 option, 书

lyzhang01

option adjusted  spread。

书上说是remove掉option之后同样的bond的spread。可我看第五本notes上第84页的例子，计算OAS，没有去掉option呀？

越想越糊涂。多谢了。

likui

Yes, I think so. That should be a Z-spread indeed. But, the example just shows us how to calculate the OAS, the same way as the calculation of Z-spread.