Relative valuation: multiples, peers and when they mislead

FundSpec, 8 September 2026

Relative valuation asks a simpler question than a discounted cash flow model: what are companies like this one selling for? If comparable businesses trade at fifteen times earnings and this one trades at ten, it is cheap relative to its peers, and that is often the most practical statement that can be made about a stock. This guide covers the standard multiples, how to pick the peers, and the ways each multiple lies.

The multiples

A multiple divides a company's price or value by a measure of its size. Price to earnings compares the market value of the equity to net income and is the most widely quoted. Price to sales compares it to revenue and works for companies with no profits yet. Price to book compares it to the accounting value of the equity and suits businesses whose assets are close to their value, such as banks; price to tangible book strips out goodwill and intangibles. Price to operating cash flow compares it to the cash the operations produced, which is harder to manage than earnings. Enterprise value to EBITDA compares the value of the whole business, debt included and cash excluded, to its operating profit before depreciation, so that companies with different debt levels can be compared.

Each answers a different question, and a company can be cheap on one and expensive on another. A capital intensive business can look cheap on EBITDA and expensive on free cash flow because its depreciation is real. A company with a large one time gain looks cheap on earnings for a year. Using several multiples together and taking the median is the standard defence.

Choosing the peers

A multiple means nothing without a reference set. The reference should be companies with similar economics: the same industry, similar growth, similar margins, similar capital intensity. Industry is the usual starting point because companies in the same industry face the same customers, costs and cycle. FundSpec builds peer groups from the SIC industry codes in each company's own SEC filings, using the most specific group that has enough members, and shows the exact cohort used for each stock.

Size matters within the group. Larger companies attract more trading and more coverage, and their multiples are set by deeper price discovery; very small companies in the same industry often trade at structurally lower multiples for reasons that have nothing to do with the business. FundSpec sets its benchmark multiples from the larger members of each group for that reason, while still scoring every company against it.

Aggregating the group

Once the peers are chosen, their multiples are combined into a benchmark. The median resists outliers and is the standard choice. A market cap weighted average lets the largest peers dominate, which is right when they set the price for the group and wrong when one giant distorts it. Extreme values should be trimmed first, because a company with earnings near zero has a price to earnings ratio in the hundreds that says nothing about the industry. FundSpec trims the tails of each group before taking the typical multiple.

Where multiples mislead

A low multiple is a fact; cheapness is an interpretation. A stock can trade at a low multiple because the market expects earnings to fall, in which case the multiple on next year's earnings is not low at all. It can trade at a low multiple because the industry as a whole is out of favour, which a relative valuation cannot see because every peer is cheap together. And it can trade at a low multiple because something is wrong that the filings do not yet show.

The opposite errors apply to high multiples. A company growing far faster than its peers deserves a higher multiple, and comparing it to the industry median understates its value. Growth adjusted multiples exist for that reason, and a relative valuation should always be read next to the growth rates of the peers.

Finally, multiples move with the market. When the whole market is expensive every peer group is expensive, and a stock that is fairly valued against its peers can still be expensive in absolute terms. FundSpec adjusts its fair value gap for the market's overall level so that a period when everything trades above its warranted value does not label every stock overvalued, and the market adjustment is shown so you can see how large it is.

How FundSpec shows it

Every stock page has a sector relative value tab and an industry relative value tab showing what the company would be worth at its peers' typical multiples, with the cohort used. The FundSpec fair value blends the industry estimate with a second, market wide model to produce a single rating from Significantly Undervalued to Significantly Overvalued with a calibrated range. Subscribers can build their own relative value model from the My Models screen, choosing the comparables, the multiples and the aggregation method, and the compare view puts any set of tickers' multiples side by side with their percentile across the whole market.