How this instrument works
Capital gains yield takes two prices for the same holding — what it cost and what it is worth now — and reports the percentage move between them, with nothing else mixed in. The numerator is simply the change in price; dividing by the starting price scales that change to a percentage anyone can compare across holdings of wildly different sizes. A $12 move means little on its own, but a $12 move on an $80 share and a $12 move on a $400 share tell very different stories once each is measured against where it started.
Analysts split a stock's total return into two additive pieces precisely so this figure can stand alone: capital gains yield covers price movement, dividend yield covers cash paid out, and adding the two gives the whole picture. A growth stock that pays no dividend earns its entire return through this number; a mature utility might show a modest capital gains yield next to a much larger dividend yield. Landlords and house flippers reach for the same shape of arithmetic on a sale price against a purchase price, even though nobody calls it a yield in that context.
Nothing about time is built into the formula — unlike a compound annual growth rate, capital gains yield does not care whether the span between the two prices was six weeks or six years, and it does not annualize the result. That makes it easy to misread: a 15% capital gains yield over one quarter and a 15% capital gains yield over three years describe very different rates of gain, and the number alone cannot tell them apart. It also ignores brokerage commissions, bid-ask spread, and taxes due on the gain when the position is actually sold.
- Enter what the position cost in Starting price, $ — the price at the beginning of the period being measured.
- Enter what it is worth now in Ending price, $ — the current or exit price for the same holding.
- Read Capital gains yield, % — the price change expressed as a percentage of the starting price.
- Pair the result with a separate dividend yield figure if the holding paid income, since this number alone only ever covers price.
Worked example — a stock moving from $80 to $92
A share bought at Starting price, $80 is now quoted at Ending price, $92. The change in price is 92 minus 80, which is 12. Dividing that 12 by the starting price of 80 gives 0.15, and multiplying by 100 turns it into Capital gains yield, % of 15.0 — a straightforward 15% gain measured on price alone.
That 15.0% says nothing about any dividends the share might have paid across the same stretch. If the same stock also paid $2 per share in dividends while it climbed from $80 to $92, total return would run to roughly 17.5%, made of the 15.0% capital gains yield calculated here plus a 2.5% dividend yield on the original $80 — two separate numbers that only combine into total return once both are worked out.
Questions
Does capital gains yield include dividends paid along the way?
No. It measures the change in price only — end price minus start price, divided by start price. A stock can pay a generous dividend while its capital gains yield stays flat or turns negative, because the formula never reads the dividend, coupon, or rental income a holding produced. Add a separate dividend yield figure to see the income side of the return.
Can capital gains yield be negative?
Yes, whenever the ending price sits below the starting price. A share falling from $80 to $68 gives a capital gains yield of −15%, a genuine capital loss, and that stays true no matter how much dividend income arrived over the same stretch — the loss on price and any income received are counted separately, not netted against each other.
How is capital gains yield different from CAGR?
CAGR forces a rate onto a fixed one-year basis so returns over different spans can be compared; capital gains yield does not annualize anything. A 15% capital gains yield over three months and a 15% capital gains yield over three years are both simply 15% here, and only CAGR-style math converts either one into a comparable yearly rate.
What is the relationship between capital gains yield and total return?
Total return is the sum of capital gains yield and dividend yield (or coupon yield for a bond) over the same period. A stock going from $80 to $92 while paying a $2 dividend has a 15.0% capital gains yield and roughly a 2.5% dividend yield, adding to about 17.5% total return — capital gains yield is one half of that picture, not the whole of it.
Does the starting figure have to be the original purchase amount?
It can be any starting point you choose — what was originally paid, the quote at the start of a quarter, or any earlier level you want to measure from. The formula only compares the two figures entered; it has no memory of which date the buyer actually paid, so the result is only as meaningful as the two points chosen to represent it.
Why does a starting figure of zero cause an error?
Because the formula divides by that starting figure, and division by zero has no defined result. Starting price, $ has to be a positive number greater than zero for capital gains yield to compute at all, which matches how markets actually work — an asset with no cost basis to begin with cannot have a percentage change measured against it.
References
Read this first: This instrument shows arithmetic, not advice. Real offers add fees, taxes and terms that vary by lender and place — verify the figures against your actual paperwork before deciding anything.