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CFA Level I · CFA Level I Exam · Returns of Financial Assets and Instruments

The money-weighted return and the time-weighted return of an account are most likely equal when:

The two measures are most likely equal when the portfolio has no external cash flows during the period. With no deposits or withdrawals there is only one sub-period, so the internal rate of return and the linked holding-period return coincide. Offsetting flows or a longer horizon do not guarantee equality.

  1. Acontributions equal withdrawals
  2. Bthe investment horizon exceeds one year
  3. Cthe portfolio has no external cash flows during the periodCorrect

Explanation

Without external cash flows there is a single holding period, so the internal rate of return and the geometrically linked sub-period returns give the same result. Offsetting contributions and withdrawals at different times still change the weights, and a longer horizon does not force equality.

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