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德玛 · 2021年06月20日

为什么不能策略1

NO.PZ2019103001000053

问题如下:

Abram and Edgarton recently attended an investment committee meeting where interest rate expectations for the next 12 months were discussed. The Fund’s mandate allows its duration to fluctuate ±0.30 per year from the benchmark duration. The Fund’s duration is currently equal to its benchmark. Although the Fund is presently invested entirely in annual coupon
sovereign bonds, its investment policy also allows investments in mortgage-backed securities (MBS) and call options on government bond futures. The Fund’s current holdings of on-the-run bonds are presented in Exhibit 1

Over the next 12 months, Abram expects a stable yield curve; however, Edgarton expects a steepening yield curve, with short-term yields rising by 1.00% and long-term yields rising by more than 1.00%.

Based on her yield curve forecast, Abram recommends to her supervisor changes to the Fund’s holdings using the following three strategies:

Strategy 1: Sell the 3-year bonds, and use the proceeds to buy 10-year bonds.

Strategy 2: Sell the 5-year bonds, and use the proceeds to buy 30-year MBS with an effective duration of 4.75.

Strategy 3: Sell the 10-year bonds, and buy call options on 10-year government bond futures.

Based on Exhibit 1 and Abram’s interest rate expectations, which of the following strategies is expected to perform best over the next 12 months?

选项:

A.

Strategy 1

B.

Strategy 2

C.

Strategy 3

解释:

B is correct.

In a stable yield curve environment, holding bonds with higher convexity negatively affects portfolio performance. These bonds have lower yields than bonds with lower convexity, all else being equal. The 5-year US Treasury has higher convexity than the negative convexity 30-year MBS bond. So, by selling the 5-year Treasury and purchasing the 30-year MBS, Abram will reduce the portfolio’s convexity and enhance its yield without violating the duration mandate versus the benchmark.

卖3.0205份3年 买1份10年。他们不就duration netural了吗
1 个答案
已采纳答案

pzqa015 · 2021年06月20日

嗨,努力学习的PZer你好:


卖3.0205份3年 买1份10年。他们不就duration netural了吗

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同学你好,

根据题干中“Abram expects a stable yield curve”可知,本题的考点是stable yield curve下的策略,

回顾一下,stable yield curve下的策略有四个,分别是buy and hold、riding the yield curve、sell convexity、carry trade。与本题相关的策略是sell convexity。

通过策略2的买入MBS是sell convexity的方式,除此之外,还可以通过short option或者Long callable bond来实现sell convexity。

回到策略1,卖三年债,买10年债,会增加Portfolio的duration,我们只有预期收益率曲线下降的情况下,才会增加portfolio duration,所以预期stable yield curve,不能调整Portfolio duration,所以不能选择策略1.



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虽然现在很辛苦,但努力过的感觉真的很好,加油!