NO.PZ2020011303000202
问题如下:
The three-year spot rate is 4% (semi-annually compounded). An investor buys a three year zero-coupon bond for 87.0. What is the spread?
解释:
题目问:三年的spot rate是4%(半年付息一次),投资者买了一个三年的零息债券87,求spread是多少?
87=100/(1+0.04/2+S/2)6
so that: 1+0.02+S/2=(100/87)1/6=1.0235
The spread is
0.0070 or 70 basis points.
就是我求出零息债的利率是4.7515% 然后有了之前的ytm 可以把之前的ytm统一到一年付息一次 就是4.04% 相减等于0.007115 跟答案有一点点差距 这样计算是对的吗