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Lemonade · 2021年11月25日

关于折现率

NO.PZ2019010402000058

问题如下:

Eden wants to purchase a 15-year Treasury note futures contract. The underlying 3%, semi-annual Treasury note has a dirty price of 105. It has been 60 days since the last coupon payment. The futures contract expires in 90 days. The current annualized three-month risk-free rate is 1.60%. The conversion factor is 0.80. the equilibrium quoted futures contract price based on the carry arbitrage model is:

选项:

A.

103.1665

B.

104.1675

C.

130.2094

解释:

C is correct。

画图法解析如下:


题目中已经说了是three-month annualized rate,为什么折现时候还要给他复利一个90/360?如果不说是three-month,只说annualized rate,那么应该如何复利?我在这块总是混淆,麻烦老师解答。谢谢!

1 个答案

lynn_品职助教 · 2021年11月25日

嗨,努力学习的PZer你好:


The current annualized three-month risk-free rate is 1.60%。这里的意思是,适用3个月期间的无风险利率,年化后,rate = 1.6% 。并且没有明确说是复利(compounding),默认为单利。单利折算成3个月无风险利率,直接乘以 3m/12m = 90/360,即可。

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