Glossary term
Comps
Comps are comparable companies, transactions, properties, or assets used to estimate value by reference to similar market evidence.
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What Are Comps?
Comps are comparable companies, transactions, properties, or assets used to estimate value by reference to similar market evidence. The shorthand appears in investment banking, equity research, private company valuation, real estate, appraisal work, and retail pricing.
The basic idea is simple: a difficult-to-value asset can be understood by looking at what similar assets are worth. In business valuation, comps may refer to comparable public companies or precedent transactions. In real estate, comps usually mean similar nearby properties that recently sold, are pending, or are currently listed.
Key Takeaways
- Comps are market comparisons used to estimate value.
- In finance, comps often mean comparable companies or comparable transactions.
- In real estate, comps usually mean similar properties used to support pricing.
- The quality of the comp set matters more than the number of comps.
- Comps require adjustments because no company, deal, or property is perfectly identical.
How Comps Work
Comps start with a subject: a company, property, security, business unit, or asset being valued. The analyst then selects comparable examples that share meaningful characteristics. A company comp set may consider industry, growth, margins, size, geography, capital structure, and cyclicality. A real estate comp set may consider location, square footage, condition, lot size, age, layout, amenities, and timing of sale.
After selecting the comparisons, the analyst adjusts for differences. A faster-growing company may deserve a higher multiple. A property with a larger lot or better condition may support a higher price. A transaction completed during a hot market may not translate cleanly into a cooler market.
Common Types of Comps
Type | Used for | Typical measure |
|---|---|---|
Trading comps | Public company valuation | P/E, EV/EBITDA, EV/revenue |
Transaction comps | M&A valuation | Deal multiple or purchase price |
Real estate comps | Home or property pricing | Sale price, price per square foot |
Retail comps | Store or product comparison | Comparable sales growth |
What Makes a Good Comp?
A good comp is similar in the factors that drive value. For companies, the drivers might be revenue model, margin structure, growth rate, customer concentration, recurring revenue, capital intensity, and risk. For properties, the drivers might be school district, neighborhood, usable space, condition, parking, views, zoning, and market timing.
Bad comps create false precision. A large profitable software company may not be a good comp for a small services-heavy technology firm. A renovated home on a quiet street may not be a clean comp for a dated home on a busy road. The analyst's judgment matters because the math can look clean even when the comparison is weak.
How Investors and Buyers Use Them
Investors use comps to check whether a stock, private company, or acquisition target looks expensive or cheap relative to peers. Real estate buyers and sellers use comps to set offer prices, listing prices, and negotiation ranges. Lenders and appraisers may use comparable evidence to support collateral values.
Comps are powerful because they reflect market prices rather than theory alone. They are limited because markets can be wrong, peer groups can be cherry-picked, and recent transactions can reflect temporary conditions. A comp set should frame a valuation range, not pretend to produce a single perfect answer.
Cherry-Picking Risk
The most common abuse of comps is selecting examples that support a desired conclusion. A seller may choose only high-priced property sales. A banker may choose high-multiple public companies. A buyer may emphasize weaker examples to justify a lower offer.
Good analysis shows the full range, explains exclusions, and states why the selected comps are relevant. Transparency around the comp set is what turns a comparison from persuasion into analysis.
The Bottom Line
Comps are a practical way to anchor valuation in observable market evidence. They work best when the comparisons are genuinely similar, adjustments are honest, and the conclusion is treated as a range informed by judgment rather than a mechanical answer.