请问老师 The yield on the XYZ bonds is 175 basis points over 8-year US Treasury securities, and the Treasury spot yield curve has a normal, rising shape. 这句话到底在说什么?是什么意思 是赘述吗?
到底是利率上升了还是下降了,,最后一句看起来是说下降了,但是spot yield curve has a normal, rising shape.这里好像很冲突
这道题,The yield on the XYZ bonds is 175 basis points over 8-year US Treasury securities, and the Treasury spot yield curve has a normal, rising shape.
题干说的是 rising shape 是说利率上升的情况呀。
callable bond 在利率上升的时候不是正凸性吗?只有在利率下降才是负凸性不是吗?如callable bond的图形。
所以我觉得利率上升正凸性是选A的
其次,想问老师。是说callable bond 的图形都是正凸性的还是说分开看以call price为分界点,利率下降是负凸性 上升是正凸性?
还是觉得这道题 想不明白呀