Comparable Companies: The Valuation Method Bankers Actually Use First
Before anyone builds a DCF, they check what the market pays for similar companies. Trading comps are fast, grounded, and quietly circular, and mastering them means mastering their flaws.
Valuation by Neighborhood
Ask what a house is worth and nobody builds a discounted cash flow of its future rents, they check what similar houses on the street sold for. Comparable company analysis, trading comps, applies the same instinct to businesses, find public companies similar to the one you are valuing, observe what the market pays for each dollar of their earnings or revenue, and apply that pricing to your target. It is the first analysis in every pitch book, the sanity check on every DCF, and the fastest way to sound fluent about value, which makes it, alongside the DCF and precedent transactions covered in their own articles here, the third leg of the valuation stool and the one used most often in practice.
The Mechanics in One Paragraph
The work has three steps. Select a peer group, typically five to ten public companies matching the target\'s industry, size, growth, and business model. Spread the multiples, for each peer compute ratios of value to a performance measure, the workhorses being EV to EBITDA, enterprise value, the value of the whole business including debt, against earnings before interest, taxes, depreciation, and amortization, and the familiar P/E, price against earnings, plus revenue multiples for companies without profits. Apply the range, if peers trade at 10 to 12 times EBITDA and your target earns 200 million of EBITDA, the method values it at 2.0 to 2.4 billion. Multiples are always computed on forward estimates as well as trailing results, markets price futures, not histories. The arithmetic takes an afternoon. Everything interesting hides in step one.
A comps analysis is an argument disguised as a table. Whoever chooses the peer group has already chosen the answer\'s neighborhood, which is why the peer list, not the multiple, is where analysts fight.
Where the Judgment Lives
Three genuine skill points separate professional comps from spreadsheet homework. Peer selection is the answer, include the premium compounder and your valuation inflates, include the declining laggard and it sags, and every banker has watched a peer group get negotiated deal side by side with the price itself. Multiples must match the metric\'s logic, EV multiples pair with pre interest earnings like EBITDA because enterprise value belongs to debt and equity holders together, P/E pairs with net income which belongs to shareholders alone, mixing levels is the classic technical interview trap and a real world error that changes answers by billions. And differences demand explanation rather than averaging, if one peer trades at 15 times while the group sits at 10, the 15 encodes something, faster growth, better margins, a takeover rumor, and the analyst\'s actual job is deciding whether the target deserves the group\'s multiple, the outlier\'s, or something in between. The regression version of comps, plotting multiples against growth or margins and placing the target on the line, is the honest upgrade to the naive average.
The Method\'s Quiet Circularity
Comps have a philosophical flaw worth stating plainly, they price relative value, not value. If the whole neighborhood is mispriced, comps faithfully reproduce the mispricing, every software company in 2021 looked reasonably priced against every other software company, as this site\'s Looking Back series documents, right up until the entire sector repriced by half. Comps told you nothing was wrong because comps cannot, they are a mirror, not a scale. That is why the DCF survives despite its fragility, it is the only method anchored to cash rather than to sentiment, and why professionals triangulate, comps for the market\'s current mood, precedents for what acquirers pay, DCF for what the cash flows can actually support. When the three disagree violently, that disagreement is the most valuable output on the page.
The Bottom Line
Comparable company analysis prices a business by its public neighborhood, pick honest peers, pair multiples with matching metrics, explain outliers instead of averaging them, and read the result as the market\'s opinion rather than the truth. It is the fastest credible valuation tool in existence and the easiest to quietly rig, which is why the analyst who can defend a peer group line by line is more valuable than one who can merely compute the multiples. The table is simple. The argument inside it is the job.