问题如下:
Which of the following spreads is described in basis points over an actual or interpolated government bond?
选项:
A.G-spread
B.Z-spread
C.OAS-spread
解释:
A is correct.
G-spread is described as the basis points over an actual or interpolated government bond.
所有 的spread 不都是目标y - benchmark y吗?z spread 也可以理解为以gov bond的spot rate 为benchmark后risk premium, 为什么不能选B呢?