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王二狗 · 2021年11月19日

我自己用IRR算了一遍也是负数，但我第一时间答题是看到几何平均和TWRR，知道他俩是一个东西，所以这两个肯定没法选，所以第一时间选了MWRR，这个答题思路可以吗？

  1. CFA I
  2. Portfolio

NO.PZ2015121801000135

问题如下：

A fund receives investments at the beginning of each year and generates returns
as shown in the table.


Which return measure over the three-year period is negative?

选项：

A.

Geometric mean return

B.

Time-weighted rate of return

C.

Money-weighted rate of return

解释：

C is correct. The money-weighted rate of return considers both the timing and amounts of investments into the fund. To calculate the money-weighted rate of return, tabulate the annual returns and investment amounts to determine the cash flows

CF0 = –$1,000, CF1 = –$2,850, CF2 = –$40,440, CF3 = +$43,200

Each cash inflow or outflow occurs at the end of each year. Thus, CF0 refers to the cash flow at the end of Year 0 or beginning of Year 1, and CF3 refers to the cash flow at end of Year 3 or beginning of Year 4. Because cash flows are being
discounted to the present—that is, end of Year 0 or beginning of Year 1—the period of discounting CF0 is zero whereas the period of discounting for CF3 is 3 years. Results in a value of r = –2.22%

Note that B is incorrect because the time-weighted rate of return (TWR) of the fund is the same as the geometric mean return of the fund and is thus positive

我自己用IRR算了一遍也是负数，但我第一时间答题是看到几何平均和TWRR，知道他俩是一个东西，所以这两个肯定没法选，所以第一时间选了MWRR，这个答题思路可以吗？

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1 个答案

Kiko_品职助教 · 2021年11月21日

嗨，爱思考的PZer你好：


针对这道题的话当然可以~这个思路没有问题哈。

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虽然现在很辛苦，但努力过的感觉真的很好，加油！

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