What dividend yield measures
Dividend yield expresses how much cash income an investment pays out each year relative to its current price. It is calculated as the annual dividend per share divided by the current share price, multiplied by 100 to get a percentage.
Yield is a snapshot ratio, not a fixed guaranteed return — both the share price and the dividend payment can change, and a company is generally not obligated to maintain or increase its dividend.
Worked example
A share trading at $50 that pays $2 per share in dividends over the year has a yield of $2 divided by $50, which equals 0.04, or 4%. If the annual dividend increased to $3 while the price stayed at $50, the yield would rise to 6%. If instead the share price fell to $40 while the $2 dividend stayed the same, the yield would rise to 5% — showing that yield moves whenever price moves, even with no change to the actual dividend payment.
This last point matters: a rising yield is not always good news. It can result from a rising dividend (positive) or from a falling share price (potentially a warning sign about the company), and the yield number alone doesn't tell you which one occurred.
| Share price | Annual dividend | Yield |
|---|---|---|
| $50 | $2.00 | 4.0% |
| $50 | $3.00 | 6.0% |
| $40 | $2.00 | 5.0% |
Why a high yield isn't automatically good
An unusually high yield compared to similar companies can sometimes indicate the market expects a dividend cut, or that the share price has fallen sharply due to underlying business problems — inflating the yield mathematically even as the dividend itself becomes less secure.
Dividend sustainability depends on factors like the company's earnings and cash flow relative to what it pays out, none of which is captured by the yield figure alone. Yield is one data point among several that investors typically weigh, not a standalone signal of investment quality.
Yield is only part of total return
Dividend yield captures cash income only — it excludes any gain or loss from the share price itself. An investor's total return combines dividend income with price appreciation or depreciation, so a low-yield or zero-yield investment can still deliver a strong total return if the share price rises substantially.
よくある質問
How do you calculate dividend yield?
Divide the annual dividend per share by the current share price, then multiply by 100. A $50 share paying $2 per year in dividends has a yield of 4% ($2 ÷ $50 × 100).
Does a higher dividend yield mean a better investment?
Not necessarily. Yield rises either because the dividend increased (generally positive) or because the share price fell (potentially a warning sign), and the yield figure alone doesn't distinguish between the two. An unusually high yield relative to peers can sometimes signal the market expects a future dividend cut.
Is dividend yield the same as total return?
No. Dividend yield measures only the cash income portion of a return. Total return also includes any change in the share price itself, so a low-yield investment can still produce a strong total return through price appreciation.
Can a company change or cancel its dividend?
Yes. Dividends are generally paid at a company's discretion and are not a guaranteed obligation like a bond's interest payment. A company can increase, decrease, or suspend its dividend depending on its earnings and financial position.
参考文献
- U.S. Securities and Exchange Commission (SEC) — investor education on dividends and dividend yield.
- CFA Institute — equity valuation materials covering dividend yield as a market ratio.
- Financial Industry Regulatory Authority (FINRA) — investor education on dividend-paying stocks and yield.