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Lesson 8 of 9 · 13 min
Choosing a peer group: industry and factor approaches
The ideal peers share the target's risk, growth and cash flow characteristics; analysts usually start from an industry classification and refine it, or group companies by statistical factors such as beta.
In short
- The goal is peers with similar risk, growth and cash flow characteristics; no two firms are identical.
- Industry-based peers start from a classification system (GICS, ICB, TRBC) and are refined for size, geography, business mix, cost structure, life-cycle stage, market structure, cyclicality and outliers.
- Challenges and fixes: concentrated industries → rely more on DCF; mixed life-cycle stages → drop firms in different phases (without over-shrinking the group); different jurisdictions → regulation and tax differences; multi-industry firms → a peer group per segment and a weighted average multiple.
- Factor-based peers group firms by statistical risk factors, e.g. similar CAPM beta, across industries.
- Factor approaches link directly to risk and return but risk model misspecification: relationships may not hold for other stocks or periods, and factors can underperform for long stretches.
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