老师 本题 我在算 DDB 第四年的 CV 如下 60* 【1-2/6】^4-1 =60*（2/3)^3 = 17.777 17.777* 2/6 =5.925 能否说下 这样计算 错在哪个地方 谢谢

06.单选题 收藏 标记 纠错 Bond investors should not rely exclusively on credit agency ratings because: A market pricing tends to lag changes in credit ratings. B credit ratings may change over time. C default rates are higher for lower-rated bonds. A 为什么不对？

spv,在原本书的那个部分？

Which of the following statements is CORRECT for both callable and putable bonds? A The value of the bond is equal to the value of a similar straight bond plus the value of the option. B When yield volatility increases, the value of the option increases. C When yield volatility increases, the value of the bond increases.

A bond has a convexity of 25.72. What is the approximate percentage price change of the bond due to convexity if rates rise by 150 basis points? 您好，这道题我看了答案解析，但是不理解为什么不加负的修正久期乘以德塔y 哪？需要老师帮忙解答

04.单选题 收藏 标记 纠错 If three bonds are otherwise identical, the one exhibiting the highest level of positive convexity is most likely the one that is: A putable. B callable. C option-free. 老师，您好，能否用通俗的语言解析下这道题的逻辑关系，比较蒙圈

老师请问， non-negotiable CDs 和 negotiable CDs 的区别除了 到期前赎回penalty， 还有什么其他区别么?

B 选项的意思可以是所有的账户都按照平均的收费标准进行收费（包括自己的个人账户，自己的个人账户不应该有所偏颇），我觉得B这样理解的话也是对的啊

Why should effective duration, rather than modified duration, be used when bonds contain embedded options? A Effective duration considers expected changes in cash flows. B Modified duration considers expected changes in cash flows. C Either could be used if the bond has embedded options. 这道题麻烦讲解下，有点看不明白

INV expense 是capitalized？ 不太明白