Comparable Company Analysis: How to Value Stocks Using Peers
Comparable company analysis (comps) values a company by comparing it to similar publicly traded companies using valuation multiples. If the median competitor trades at 20x P/E and the target company earns $5 per share, the target's implied value is $100 per share. Comps are used by 90%+ of investment bankers and equity analysts.
Comparable company analysis is the most widely used valuation method in finance. It is based on the principle of substitution — a similar asset should have a similar value. If Company A and Company B are in the same industry, have similar growth rates, margins, and risk profiles, they should trade at similar multiples. When a company trades below its peers, it may be undervalued (or the market has identified problems). When it trades above, it may be overvalued (or it deserves a premium for superior quality).
The process has five steps. Select the peer group: identify 8 to 15 publicly traded companies in the same industry with similar size, growth, and margins. Gather financial data: collect revenue, EBITDA, net income, and other metrics for each peer. Calculate multiples: compute P/E, EV/EBITDA, P/S, P/B, and other relevant multiples. Analyze the peer group: calculate the mean, median, high, and low for each multiple. Apply multiples: multiply the target company's financial metrics by the peer group's median or mean multiple to derive an implied value range.
Real-world example: Valuing a privately held software company for an acquisition. Peers (Microsoft, Oracle, SAP, Salesforce, Adobe) trade at a median EV/EBITDA of 18x and median P/S of 6x. The target company has $50 million EBITDA and $200 million revenue. Implied value from EV/EBITDA: $50M x 18 = $900 million. Implied value from P/S: $200M x 6 = $1.2 billion. The average of the two methods suggests a fair value of $1.05 billion. The acquirer might pay a premium of 20% to 30% for control ($1.26 to $1.37 billion) and negotiate based on the target's specific strengths and weaknesses relative to the peers.
Comps vs. DCF: Which Is Better?
Comps reflect the current market sentiment and are more objective (based on observable market prices). DCF reflects the company's fundamentals and requires more assumptions. Comps are preferred for investment banking and M&A because they show what acquirers are actually paying for similar companies. DCF is preferred for long-term value investing because it focuses on the company's intrinsic value independent of market sentiment. The best approach is to use both — comps to assess relative value and DCF to assess absolute value. If both methods suggest a stock is undervalued, the conviction is stronger. If they disagree, understand why.
FAQs
How do I select comparable companies?
Start with the GICS industry classification — find companies in the same industry sub-group. Then filter by size (revenue and market cap within 0.5x to 2x of target), growth rate (within 5% of target), profitability (similar gross margin, operating margin), and business model (similar revenue drivers, customer base, and products). Avoid companies with fundamentally different business models — comparing a subscription software company to a consulting firm would be misleading. If there are not enough direct peers, broaden to adjacent industries or use a "sum of the parts" analysis for diversified companies.
What is the difference between mean, median, and harmonic mean in comps?
Mean (average) is the sum of all multiples divided by the count. It is influenced by outliers — one company with a very high or very low multiple can distort the average. Median is the middle value — it is more robust and is the preferred measure in practice. Harmonic mean (calculated as N / sum(1/multiple)) gives less weight to high multiples and is sometimes used for P/E ratios. Most analysts use the median for the core valuation and the mean as a reference. They also note the high and low to show the range of market pricing for comparable companies.
How do I adjust comps for different growth rates?
If the target company grows faster than the peer group, it deserves a higher multiple. The adjustment can be made using the PEG ratio: apply the peer group's average PEG to the target's growth rate to derive a target P/E. For example, if peers have an average P/E of 18 and average growth of 10% (PEG = 1.8), and the target grows at 15%, the target's P/E should be 1.8 x 15 = 27. This "growth-adjusted" multiple accounts for the value of growth. The same logic applies to EV/EBITDA adjusted for growth. This adjustment is critical when the target has a meaningfully different growth profile from the peer group.