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西红柿面 · 2024年04月24日

这道题不太严谨吧

NO.PZ2023020101000011

问题如下:

They move to valuation of a bond futures contract employed by Sheroda. Parisi provides Curry with the following information for a Treasury bond and calculates the price of a futures contract on this bond. The bond has a face value of $100,000, pays a 7% semiannual coupon, and matures in 15 years. The bond is priced at $156,000, has no accrued interest, and yields 2.5%. The futures contract expires in 8 months, and the annualized risk-free rate is 1.5%. There are multiple deliverable bonds, and the conversion factor for this bond is 1.098.

Based on the information provided by Parisi, which of the following correctly calculates the futures price of the Treasury bond

选项:

A.

f 0 ( T )= [ $156,000 ( 1.015 ) ( 8/ 12 ) −$3,508.6958 ] /1.098 =$140,298.21.

B.

f 0 ( T )= [ $156,000 ( 1.015 ) ( 8/ 12 ) 3,491.325 ]/ 1.098 =$140,314.03.

C.

f 0 ( T )=1.098[ $156,000 ( 1.015 ) ( 8/ 12 ) $3,508.6958 ]=$169,144.08.

解释:

The futures price is calculated as follows:

f 0 ( T )= 1 /CF( T ) { FV[ B 0 ( T+Y )+A I 0 ]A I T FVC I 0,T }

There is no accrued interest, but the bond pays a $3,500 coupon in 6 months, so the future value of the coupon at expiration will be $3,508.6958 = 3500(1.015)(2/12).

f 0 ( T )= [ $156,000 ( 1.015 ) ( 8/ 12 ) $3,508.6958 ] /1.098 =$140,298.21.

  1. 没有计算AI(T)
  2. 没有告知Futures开始的时间


全都是靠瞎猜哪个答案是对的……

1 个答案
已采纳答案

李坏_品职助教 · 2024年04月24日

嗨,爱思考的PZer你好:


此道题确实不够严谨,忽略了AIT的计算,同学的理解是对的。我们会讨论一下对这道题进行修改或下架。


此外,关于futures开始的时间,其实具体在哪个月开始不是很重要。重要的是我们要确定未来的coupon发放的时间。

题目告诉我们: The bond is priced at $156,000, has no accrued interest,,这句话意思是现在这个bond没有AI,那只有两种情况,要么是在债券的期初(下一笔coupon恰好是在6个月之后发放);要么是刚发完一笔coupon(那么下一笔coupon也是在6个月之后发放)。由于futures的期限是8个月,所以coupon发放完2个月之后,期货就到期了。

所以FVC就确定下来 = 3500* (1.015)^(2/12).




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