Why Peer Selection Requires More Than an Industry Label
Relative valuation uses observed market measures from other companies to help assess a company’s value. The comparison is informative only to the extent that the companies have similar economic characteristics. Two firms can share an industry classification yet sell different products, earn different margins, face different risks, and require different amounts of capital. Their valuation multiples may therefore differ for sound economic reasons.
A useful peer group is not simply a list of businesses with similar names or stock-market sector labels. It is a set of companies whose business models and financial characteristics make their market measures relevant to the company being valued. The task is partly analytical and partly judgmental: screen out clearly unsuitable candidates, compare the remaining firms on important dimensions, and explain any limitations.
The right characteristics depend on the multiple being used and the subject company. For a growth-oriented business, expected growth may be especially important. For a business with substantial operating assets, margins and capital intensity may matter. Risk and capital structure also matter, but their relevance depends in part on whether the valuation measure is an equity claim or an enterprise claim. The earlier material on matching valuation multiples to cash-flow claims establishes that the measure and the claim being valued must be consistent.
A Structured Peer-Selection Process
Begin with a broad candidate list based on the subject company’s products, customers, and sources of revenue. Then apply a business-model screen: ask how each company earns revenue, which customers it serves, and whether its main operations are genuinely comparable. Only after that initial screen should numerical comparisons be treated as persuasive evidence.
Identify its principal products or services, customer groups, revenue sources, and operating model. A short, specific description makes it easier to recognize superficial industry matches.
Retain candidates whose products, customers, and revenue-generating activities are meaningfully similar. Do not assume that a common sector label establishes this similarity.
Assess growth, risk, operating margins, and capital structure. Decide which differences are large enough to make a candidate a weak peer for the specific analysis.
State which candidates were retained or excluded and why. Use a summary measure, such as the median of the selected peers’ multiples, only after the group is defensible.
These steps are a framework, not a universal scoring rule. No particular numerical cutoff can establish comparability in every industry. A small difference in one measure may matter greatly in one business and little in another. The important discipline is to make the criteria explicit and apply them consistently.
What to Compare
| Dimension | Questions to ask | Why it can affect comparability |
|---|---|---|
| Business model | Do the companies sell similar offerings to similar customers through similar channels? | Different revenue sources may have different economics, even within one industry. |
| Growth | Are expected growth rates and the drivers of growth similar? | Market prices can reflect differences in the amount and durability of expected growth. |
| Risk | Are operating exposures, customer concentration, and sensitivity to economic conditions similar? | Greater uncertainty or risk can affect the valuation investors are willing to support. |
| Margins | Are operating margins similar, or does one company have a materially different cost structure? | Similar revenue does not necessarily imply similar profit or cash-generation capacity. |
| Capital structure | Do debt levels and financing arrangements differ materially? | Leverage affects the risk of equity claims; the relevance to an enterprise-value comparison must be considered in context. |
A company need not match the subject company on every measure. Rather, the analyst should identify meaningful differences and decide whether they undermine the comparison, call for a different peer, or require cautious interpretation. For example, a markedly different business model is often a stronger reason to exclude a candidate than a modest difference in a single financial statistic.
Worked Example: Screening Candidates With Several Business Differences
A hypothetical subscription-software company is being valued. It serves mid-sized businesses, has expected growth of 8%, an operating margin of 12%, a beta of 1.0, and net debt equal to 1.0 times EBITDA. Four candidates share its broad technology-sector classification. Candidate D primarily resells computer hardware rather than selling software subscriptions. The other candidates have the following characteristics:
| Candidate | Growth | Operating margin | Beta | Net debt / EBITDA |
|---|---|---|---|---|
| A | 9% | 11% | 1.1 | 1.2x |
| B | 12% | 14% | 1.3 | 2.0x |
| C | 7% | 12% | 0.9 | 0.8x |
Use a simple illustrative distance score to compare A, B, and C. The score is defined for this example only; it is not an industry-standard formula. Lower scores indicate closer numerical matches. Let \(g\) denote growth, \(m\) operating margin, \(\beta\) beta, and \(L\) net debt divided by EBITDA:
Method. First exclude a candidate whose business model fails the initial screen. Then calculate the score for the remaining candidates and use it as one aid—not a substitute for judgment—in comparing their financial characteristics.
Candidate D is excluded before scoring: hardware resale has a different revenue model from subscription software. For A, the four normalized differences are \(1/5=0.2\), \(1/5=0.2\), \(0.1/0.5=0.2\), and \(0.2/1.0=0.2\). Therefore,
For B, the normalized differences are \(4/5=0.8\), \(2/5=0.4\), \(0.3/0.5=0.6\), and \(1.0/1.0=1.0\). Thus,
For C, the normalized differences are \(1/5=0.2\), \(0/5=0\), \(0.1/0.5=0.2\), and \(0.2/1.0=0.2\). Therefore,
Candidate C has the lowest score, followed by A; B is the least similar on these measures. A and C are plausible candidates for further review, while B deserves caution. The score does not prove that C is a valid peer: the analyst must still check that its business model and customer base are similar. The method avoids the common mistake of treating the common technology-sector label as sufficient evidence.
Using a Selected Peer Group
Once a peer group has been selected, a common approach is to summarize the peers’ relevant valuation multiples. If the target’s measure and the peer multiple are defined on a consistent basis, an illustrative value can be calculated by multiplying the target’s corresponding financial measure by the selected peer benchmark. This calculation does not make the companies identical; it translates the chosen benchmark into an estimate that should be interpreted in light of the selection process.
The median is often useful because it is less sensitive than the arithmetic mean to a single unusually high or low observation. For an odd number of observations, sort them and choose the middle one. For an even number, the median is the arithmetic mean of the two middle observations. This definition matters: the median of three values is not the mean of the two smallest values.
Worked Example: Calculating a Median Benchmark Correctly
A hypothetical firm has normalized earnings per share of $2.50. After screening for similar business models, growth, and risk, an analyst retains three peers with P/E ratios of 14, 20, and 16. A fourth company has a P/E ratio of 31, but it earns most of its revenue from a distinct business and is not retained. Calculate the selected peers’ median P/E and the illustrative share value using that benchmark.
Method. Exclude the unsuitable candidate, sort the retained multiples, identify the middle value, and multiply it by the target’s earnings per share.
The retained P/E ratios in ascending order are \(14,16,20\). There are three observations, so the median is the second, or middle, observation:
The illustrative share value is:
Check. The benchmark of 16 lies between the lowest retained ratio, 14, and the highest, 20. The excluded company’s ratio of 31 is not used. A common mistake is to average 14 and 16; that would give 15, but those are not the two middle values. The correct median is 16, and the resulting illustrative value is $40.00.
Capital Structure, Risk, and the Choice of Peers
Capital structure deserves careful treatment rather than a mechanical rule. Companies with similar operations may have different financing mixes. If an equity-based multiple is used, differences in leverage can make the comparison less direct because debt affects the risk borne by shareholders. An enterprise-based measure can reduce the direct impact of financing differences on the numerator, but it does not make operating risk, growth, or business-model differences irrelevant.
A peer with greater customer concentration, much faster growth, or substantially different margins may remain a poor comparison even if it operates in the same industry. Conversely, a peer with somewhat different leverage may still be useful for an enterprise-value comparison if its operating business is otherwise close. The analyst should explain why a difference matters for the chosen measure instead of automatically including or excluding a company based on one statistic.
Worked Example: Evaluating a High-Growth, Concentrated Peer
A hypothetical maintenance-services platform has EBITDA of $30 million, net debt of $90 million, expected growth of 7%, and 12% of revenue from its largest customer. Three candidate peers have similar service offerings. Their enterprise values, EBITDA, growth, largest-customer concentration, and net debt-to-EBITDA ratios are:
| Candidate | Enterprise value | EBITDA | Growth | Largest customer | Net debt / EBITDA |
|---|---|---|---|---|---|
| A | $225 million | $25 million | 8% | 10% | 2.8x |
| B | $350 million | $35 million | 6% | 15% | 3.1x |
| C | $520 million | $40 million | 15% | 45% | 4.0x |
Method. Compare the business model and operating risk first, then calculate the peers’ enterprise-value-to-EBITDA ratios. Use the selected peers’ median as a benchmark, and keep enterprise value distinct from equity value.
Candidate A’s ratio is \(225/25=9.0\). Candidate B’s is \(350/35=10.0\). Candidate C’s is \(520/40=13.0\). A and B have growth and customer concentration closer to the target. C’s 15% growth and 45% largest-customer concentration differ materially from the target’s 7% growth and 12% concentration. These differences provide a business-risk basis for treating C as a weak peer, rather than excluding it merely because its ratio is higher.
Using A and B, the median of 9.0 and 10.0 is their average:
Applied to the target’s EBITDA, the illustrative enterprise value is \(9.5\times \$30\text{ million}=\$285\text{ million}\). If the task also asks for an illustrative equity value and the stated net debt of $90 million is the only relevant enterprise-to-equity adjustment, subtract it: \(\$285\text{ million}-\$90\text{ million}=\$195\text{ million}\). This is an assumption for the example, not a general claim that net debt is always the only adjustment.
As a sensitivity check, including C would give the sorted set \(9.0,10.0,13.0\), whose median is 10.0. The resulting enterprise value would be \(10.0\times \$30\text{ million}=\$300\text{ million}\), or $15 million more than the selected-peer estimate. The calculation shows why peer selection matters; it does not establish that the higher result is more appropriate. The example avoids treating high leverage alone as the deciding factor when an enterprise measure is used, while still considering the candidate’s growth and operating-risk differences.
Common Peer-Selection Traps
- Using an industry label as the entire argument. Identify how the company earns revenue and serves customers; sector membership alone does not show that the underlying economics match.
- Choosing peers because their multiples look convenient. Define the business and financial screens before inspecting which candidates support a preferred conclusion.
- Ignoring the subject of the multiple. A peer group used for an equity measure should be assessed with equity-level considerations in mind; an enterprise measure still requires comparable operating businesses.
- Confusing a median with an average of convenient observations. Sort all selected values first. For three peer multiples, the median is the middle observation.
- Presenting judgment as certainty. State the important differences and limitations. Peer-based values are benchmarks, not proof that two companies deserve identical market valuations.
Check Your Understanding
For each problem, screen the comparison information before applying any arithmetic.
- A hypothetical target has normalized earnings per share of $3.00. Three carefully screened peers have P/E ratios of 12, 15, and 19. What is the peer median, and what illustrative share value results from applying it? (Answer: Median P/E = 15; illustrative share value = \(15\times \$3.00=\$45.00\).)
- A target grows at 9% and has business risk similar to three candidates with P/E ratios of 13, 16, and 18. Their growth rates are 7%, 9%, and 11%, respectively, and their business models are otherwise comparable. Which candidate is closest on growth, and what is the median P/E of the full peer set? (Answer: The 9%-growth candidate is closest; the median P/E is 16.)
- A target sells recurring maintenance contracts to small businesses. A candidate in the same broad industry earns most of its revenue from one-time equipment installations for large government customers. Should the candidate automatically be retained as a peer? Name the main reason for your decision. (Answer: No; the distinct revenue model and customer base weaken business-model comparability despite the shared industry label.)
- Four screened peers have P/E ratios of 11, 14, 18, and 25. The target’s normalized earnings per share are $2.25. Calculate the median P/E and illustrative share value, showing how the even-numbered median is obtained. (Answer: Median P/E \(=(14+18)/2=16\); illustrative share value \(=16\times \$2.25=\$36.00\).)
- A target has EBITDA of $40 million. Three selected peers have EV/EBITDA ratios of 8, 10, and 12. The target has net debt of $70 million, assumed to be the only enterprise-to-equity adjustment. Calculate the median-based enterprise value and illustrative equity value. (Answer: Median EV/EBITDA = 10; enterprise value \(=10\times \$40\text{ million}=\$400\text{ million}\); illustrative equity value \(=\$400\text{ million}-\$70\text{ million}=\$330\text{ million}\).)