Board logo

标题: Level 2, Fixed Income - relation between OAS and level of volatility [打印本页]

作者: charles.f    时间: 2015-5-19 19:38     标题: Level 2, Fixed Income - relation between OAS and level of volatility

大家好,能请教一下 Schweser Book 4  page 199 的最后一段话:
"Level of volatility in an interest rate tree increases, the computed OAS(implied in a given market price)for a callable bond decreases. "
作者: charles.f    时间: 2015-5-19 19:40

我的思路是,当Level of volatility in an interest rate tree 上升时,既然future cash flow 没变, present value 相对option free bond 下降,那不是应该加到benchmark rate 的OAS 上升才能得到变低的present value吗?
作者: charles.f    时间: 2015-5-19 19:40

在线等。。。。。。想了1个多小时了
作者: charles.f    时间: 2015-5-19 21:35

顶。。。。。。。。。
作者: dyzhang37    时间: 2015-5-20 00:48

Z-spread = OAS + option cost

volatility up => option cost up => OAS down with Z-spread constant




欢迎光临 CFA论坛 (http://forum.theanalystspace.com/) Powered by Discuz! 7.2