What it means
Every market value ratio has a share price on one side and something from the financial statements on the other, whether earnings, book value, sales or dividends. Their purpose is to answer a single question: how much is the market paying for each unit of whatever the company produces?
The most widely quoted is the price to earnings ratio, which shows how many dollars investors pay for each dollar of annual profit. Dividend yield shows the cash income a share pays relative to its price, and price to book compares the share price to recorded net assets.
These ratios matter in business conversations well beyond the stock market, because they set the valuation multiples used to price acquisitions and private company sales. When an adviser says a business is worth "eight times earnings", they are applying a market value ratio drawn from listed comparables.
A ratio on its own carries almost no information; meaning comes from comparison against the same company's history, its direct competitors and the wider market. A price to earnings ratio of 20 is unremarkable in software and extraordinary in commodity steel.
The common trap is that high multiples reflect expectations, not achievements. A demanding ratio means investors have already priced in years of growth, so ordinary results can cause the share price to fall even when nothing has actually gone wrong.
In practice
Real-world examples.
Example
A founder negotiating the sale of her logistics business is offered six times earnings. She checks that listed logistics groups trade at price to earnings ratios of nine to eleven, and uses the gap as the basis for pushing the offer higher.
Example
An income-focused pension fund screens shares with dividend yields above 4% and payout ratios below 70%. The second filter exists because a very high yield often signals a dividend the market expects to be cut.
Example
A technology company's price to earnings ratio sits at 45 while rivals trade near 25. When quarterly growth slows from 30% to 22%, the shares fall sharply even though profits still rose, because the premium multiple assumed faster growth.
Think of it
“Market value ratios compare what the market pays to what the business produces-valuation metrics.
Formula
Calculation
The main market value ratios are:
Price to Earnings Ratio = Share Price / Earnings per Share
Dividend Yield = Annual Dividend per Share / Share Price
Market to Book Ratio = Share Price / Book Value per Share
Worked example: a listed consumer goods company has 40,000,000 shares trading at $48.00 each, reports net income of $96,000,000, pays an annual dividend of $1.44 per share, and carries book equity of $640,000,000.
Earnings per share = $96,000,000 / 40,000,000 = $2.40.
Price to Earnings Ratio = $48.00 / $2.40 = 20.0, so investors pay $20 for each $1 of annual profit.
Dividend Yield = $1.44 / $48.00 = 0.03, or 3%.
Book value per share = $640,000,000 / 40,000,000 = $16.00, so the market to book ratio is $48.00 / $16.00 = 3.0.Case study
Seen in the real world.
This illustrative case involves a fictional business. Cobblestone Bakeries, an invented chain of cafe bakeries, went public at $24.00 a share on earnings per share of $0.80, a price to earnings ratio of 30. Management read the multiple as applause for past performance and approved an aggressive expansion plan.
The finance director argued the opposite reading. At 30 times earnings against a sector average of 16, investors were requiring roughly a doubling of profits within three years simply to justify the price already paid.
Cobblestone opened stores faster than it could staff them, earnings per share grew to only $0.96, and the multiple contracted to 18 as expectations reset. The shares settled near $17.28, teaching the board that a high market value ratio is a debt to future performance rather than a reward for past results.
Watch out
Common mistakes.
- Calling a low price to earnings ratio "cheap" without asking whether earnings are about to fall, which is often exactly why the ratio is low.
- Comparing market value ratios across industries with different growth rates, capital needs and accounting conventions.
- Using one year of unusually high or low profit in the denominator, which distorts the ratio and the conclusion drawn from it.
Questions
People also ask.
Why can I not calculate these ratios for a private company?
Because there is no traded share price, so valuation instead comes from applying multiples observed on similar listed companies or completed deals.
Which market value ratio matters most?
It depends on the business: earnings multiples suit steady profitable companies, revenue multiples suit fast-growing loss-makers, and asset multiples suit banks and property groups.
Do these ratios use historic or forecast figures?
Both are used, so always check which, since a trailing ratio and a forward ratio for the same share can look very different.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%