“How did my investment do?” sounds like one question, but it has several honest answers depending on what you count and over what period. A price that doubled is not the whole story if it paid dividends, charged fees, or took twelve years to get there. Measuring return well means knowing which method fits the question you are actually asking.
Total return: count everything
Total return captures every source of gain and loss, not just the change in price. It adds dividends and interest you received and subtracts the fees and costs you paid. A stock that rose from $100 to $105 looks like a 5% gain on price alone. Add a $3 dividend and it is an 8% total return; subtract a $1 fee and it is 7%. Ignoring the income and the costs is the most common way people overstate — or understate — how they really did.
Price change is the headline. Total return, with dividends in and fees out, is the number that matches what actually landed in your account.
Annualized return and CAGR
A raw total return is meaningless until you know the time it took. Making 50% in one year is spectacular; making 50% over ten years is modest. Annualized return restates any total gain as a steady yearly rate, so different periods can be compared on equal footing. The compound annual growth rate (CAGR) is the standard way to do it:
CAGR = (Ending ÷ Beginning)^(1 ÷ Years) − 1
Say $10,000 grew to $18,000 over 6 years. The total return is 80%, but the CAGR is (18,000 ÷ 10,000)^(1÷6) − 1 ≈ 10.3% per year. CAGR smooths away the bumpy path and answers, “what constant yearly rate would have produced this result?” It is the honest way to compare an investment held two years against one held twenty. (Figures are hypothetical.)
Money-weighted vs time-weighted
Things get subtle when you add or withdraw cash along the way, because the timing of your contributions affects the outcome. Two different returns exist for a reason:
- Time-weighted return strips out the effect of your deposits and withdrawals. It measures how the investment itself performed, which is why it is the standard for judging a fund or a manager — they cannot control when you add money.
- Money-weighted return (an internal rate of return) accounts for how much you had invested at each moment. It answers how you personally did, rewarding or penalizing the timing of your own cash flows.
Suppose a fund rose sharply, then you invested a large sum right before a dip. The fund’s time-weighted return might look fine, while your money-weighted return is poor — because most of your cash arrived at the worst time. Neither is wrong; they answer different questions.
Which to use when
- Judging a fund, index, or manager against a benchmark? Use time-weighted return so contribution timing does not distort the comparison.
- Assessing your own results, including when you bought and sold? Use money-weighted return.
- Comparing investments held for different lengths of time? Convert each to a CAGR.
- Checking a single period’s real outcome? Use total return, dividends in and fees out.
The right measure depends on the question. Comparing performance and judging your own timing are different jobs, and they call for different numbers.
Get in the habit of asking what a reported return includes — price only or total, over what period, and whether it reflects the fund or your own cash flows. That one question separates a number you can trust from one that merely sounds good.