The Personal Rate of Return
The rates of return on your investments are calculated using a uniform industry-wide method known as the money-weighted rate of return or personalized rate of return (PRR).
This method is used to establish the rate of return presented in your quarterly portfolio statements. It provides a clear understanding of how your investments have performed, as it takes into account transactions carried out over a given period.
The money-weighted rate of return or personalized rate of return (PRR) uses the following formula (see image).
Let’s consider the following scenario:
- At the beginning of the year, you have $10,000 invested in a mutual fund.
- At the end of the first quarter, your assets amount to $9,800, for a quarterly return of -2%.
- At the end of the second quarter, your total is $9,506, for a quarterly return of -3%.
- At the end of the third quarter, you make a new deposit of $5,000, and your investment amounts to $14,031. Your return for the quarter is thus -5%, since you have realized a loss of $475 with respect to your starting balance.
- Finally, at the end of the fourth quarter, your assets total $15,434, for a quarterly return of +10%.
- According to the formula, your personalized rate of return (PRR) will be 3.9%.