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Time-weighted return. Related Articles. Time-weighted returns is a measure of the compound rate of return of a portfolio over a stated period of time. It requires a set of sub-period returns to be calculated whenever there is an external cash flow, such as a deposit or withdrawal from the portfolio.
Background. I am trying to figure out the computational difference between Time-Weighted Rate of Return (TWRR) and Money-Weighted Rate of Return (MWRR). Let's say, I have a portfolio looking like this: 1  2012-Q4 - Begin Market Value (BMV) is $10,000, and End Market Value (EMV) $11,000.odified Dietz return :- http://en.wikipedia.org/wiki/Modified_Dietz_method. Backcalculating the final value (v3) using the calculated returns show the advantage of the money-weighted return over the true time-weighted return.