Dividend Yield: Trailing, Forward and Yield on Cost

“Why does the dividend yield on one quote page say 3.4% and another say 4.0% for the same stock on the same day?”

Both are probably right. They are answering different questions. One is looking backward at what the company actually paid over the past year. The other takes the most recent dividend the board declared and assumes it repeats for a full year. When a company has just raised its payout, the forward number runs ahead of the trailing one, and a third number, the yield on what you originally paid, can be higher than either.

Trailing and forward, worked

The trailing figure is a fact about the past. The forward figure is an assumption about the future, a reasonable one for a company with a steady record of raising its dividend, and a shaky one for a company whose payout moves with commodity prices or whose board has cut before. Neither version is wrong. Just know which one a screen is sorting on, because a list ranked by forward yield will favor recent raisers and a list ranked by trailing yield will still show a company that announced a cut last week at its old, higher yield.

Yield on cost

Yield on cost uses your purchase price in the denominator. It says nothing about the stock today.

The 8% is real income on the money you put in. It is also a poor guide to decisions. If you sold at $50 and bought something else, the dividend you could buy with that $50 is set by today’s yield. Your old cost has no bearing on it. Yield on cost is a record of how a holding has grown its payout. Use it that way.

Special dividends

A one-time special dividend lands in the trailing sum and stays there for twelve months.

A 7.4% yield would stand out on any dividend screen. Nothing about the ongoing payout changed. Some tools strip specials out and some leave them in, so a yield that looks far above a company’s usual level is worth checking against the dividend history table before anything else. The press release that declared it will usually call it special or one-time.

The ex-dividend date

To receive a dividend you need to own the shares before the ex-dividend date. Buy on the ex-date or later and the seller keeps that payment. On the ex-date the stock typically opens lower by roughly the amount of the dividend, since the cash is about to leave the company and new buyers no longer get it.

Other news moves the price too, so the drop is rarely exact. Buying the day before the ex-date to “capture” a dividend mostly swaps share value for cash, and in a taxable account it can turn part of your money into taxable income for no gain.

Where it shows up and how tools differ

Quote pages usually show one yield next to the annual dividend amount, labeled forward, trailing, TTM, or nothing at all. Screeners often offer both. The unlabeled one is the trap. Divide the dividend shown by the price shown. Compare that with the quarterly history to see which method the page uses. A few tools also compute yield from the prior close. Most use the latest price.

Forward yield gets unreliable for irregular payers. A company that pays a small fixed dividend plus a variable top-up each quarter has no clean number to annualize, and different tools will make different guesses about which part of the payment will repeat and which part will not.

Using it

Yield is where dividend screening starts. It is also where a lot of it goes wrong, because yield rises when price falls. A stock that has dropped by half on bad news doubles its trailing yield overnight, and the screen has no way of knowing the dividend is about to be cut; that trap is covered in high yield can mean the price fell. So pair yield with the payout ratio against earnings and cash, look at several years of dividend history, and set a sensible floor and ceiling on yield when you screen for dividend stocks. The dividend yield calculator handles the arithmetic for any price and payout you want to test.