Peer Group Selection

The success of comparable company analysis and relative valuation depends almost entirely on peer group selection. A poor peer group (companies that are not truly comparable) ruins the analysis. A good peer group (companies that are similar in all material respects) grounds the valuation in reality. Peer group selection is the most critical and most overlooked step in multiples analysis.

Dimensions of comparability

Industry. The first filter. Companies in the same industry (GICS sector, 4-digit SIC code) are usually comparable. But recognize sub-segments. In pharmaceuticals, a large-cap pharma company is not comparable to a biotech startup. In software, a SaaS company is not comparable to enterprise infrastructure.

Business model. Two companies in the same industry might have very different economics. An asset-light software company with 70% margins is not comparable to a capital-intensive telecom with 40% margins. A high-volume, low-margin retailer is not comparable to a luxury retailer.

Geographic exposure. A purely US-focused company might not be comparable to a company with 50% of revenue in emerging markets. Different regions have different growth rates, risk, and profitability.

Size. Smaller companies typically grow faster and are riskier than larger ones. Comparing a 100 million-dollar startup to a 10 billion-dollar market leader is problematic unless you adjust for size differences.

Growth rate. This is crucial. A 30% growth company trades at a much higher multiple than a 5% growth company. If they are in the same industry but different growth rates, do not average their multiples without adjustment.

Profitability. Profitable companies trade higher than unprofitable ones. A high-margin, profitable company is not comparable to a low-margin or unprofitable one without explicit adjustment.

Life cycle stage. A mature, steady-state company is not comparable to a growth-stage company, even in the same industry.

Capital intensity. Asset-heavy businesses are not comparable to asset-light ones.

Regulatory environment. A regulated utility is not truly comparable to an unregulated industrial company. Different regulatory structures drive different returns.

Building the peer group: a practical framework

Step 1: Industry and business model. Identify companies in the same industry with the same business model. If your target is SaaS, include other SaaS companies. Exclude professional services, which have different economics.

Step 2: Size filter. Set a size range. If your target is 200 million in revenue, include peers from 100 million to 500 million (0.5x to 2.5x size). Very small or very large outliers often have different economics.

Step 3: Growth rate. Sort by revenue growth rate. If your target grows at 10%, focus on peers growing 8–15%. Exclude growth outliers.

Step 4: Profitability. Calculate margins for each peer. Remove peers with vastly different profitability, unless those differences are structural and understood.

Step 5: Screen for data quality. Use only peers with complete, recent financial data. Exclude companies with one-time items or accounting anomalies unless you adjust for them.

Target peer count. Aim for 8–12 comparable companies. Fewer, and your sample is too small (one outlier skews results). More, and you are probably including non-comparables.

Common peer selection mistakes

Overly broad industry classification. Including all software companies ignores the massive differences between a SaaS company and an infrastructure company or a legacy packaged-software company. Start narrow.

Ignoring size differences. A 50 million-dollar company in an industry with 10 billion-dollar players faces different competitive dynamics and growth prospects. Adjusting for size is hard; better to exclude the extreme outliers.

Mixing growth and mature companies. A 20% growth company and a 2% growth company should not be in the same peer group. Their multiples are incomparable.

Including non-comparables for sample size. If you need 10 peers but can only find 6 good ones, list 6. Padding the list with bad comps ruins the analysis.

Not adjusting for structure differences. If a comparable has very different capital structure, profitability, or business model, either adjust its multiple or exclude it.

Ignoring cycle timing. If you are in a peak-valuation period and using current trading multiples, you might be anchoring to inflated prices. Consider normalized or cycle-average multiples.

Peers vs. competitors

Your peer group need not be direct competitors. A competitor is direct (same customers, same product). A peer is comparable on economics and scale.

Example: if you are valuing an online payment processor, direct competitors are other payment processors. But peers might also include fintech companies with similar margins, growth, and capital needs.

Broadening the peer group beyond direct competitors can improve statistical robustness if you adjust for business-model differences.

Disclosing the peer group

Good practice is to explicitly list and justify the peer group:

• List. Name each peer.
• Metrics. Show their size, growth rate, profitability, margins.
• Rationale. Explain why each is comparable.
• Adjustments. Note any where you adjusted the multiple for differences.

This transparency helps investors understand if the peer group is reasonable and credible.

When peer group is not available

Some businesses are truly unique and have no good peers. A niche specialized manufacturer or a unique franchise might not have comparables.

In that case, relative valuation is not feasible. Fall back on discounted cash flow or scenario valuation. Or expand the peer group to adjacent industries (e.g., a specialized equipment manufacturer might benchmark to general industrial companies).

Peer group adjustments

Once you have selected peers, you might adjust their multiples for differences:

Growth adjustment. If peer grows at 10% and your target at 15%, apply a premium: Adjusted multiple = Peer multiple × (1 + growth difference × growth factor).

Margin adjustment. If peer has 20% EBITDA margin and your target has 25%, apply an adjustment.

Risk adjustment. If peer is riskier, apply a discount to its multiple.

These adjustments are often 10–30%, moving multiples by 1–2 points. Keep them transparent and justified.

See also