Peer Comparison Basics: Introduction to Relative Valuation

1) What you'll learn

• What relative valuation is and when to use it
• How to choose a "peer group" for fair comparisons
• The most common valuation multiples (P/E, EV/EBITDA, P/S, PEG) and what they mean
• Step-by-step ways to calculate and compare multiples
• How to adjust for differences like growth, margins, and debt
• Practical ways to use peer comparison in investment decisions
• Common mistakes to avoid when comparing companies

2) Concept explanation

Relative valuation is like shopping for a new laptop by comparing similar models. You don’t ask “Is 800 dollars cheap?” in isolation. You ask, “Is this laptop cheap compared with others with similar features?” In investing, we do the same. We compare a company’s price to its peers using simple ratios called multiples.

A "multiple" links a company’s market value to something about its business, like profit or sales. For example, the Price-to-Earnings (P/E) ratio tells you how many dollars investors are willing to pay for one dollar of a company’s earnings. If one company trades at 10x earnings and another at 20x, the second is pricier relative to its earnings.

Peer comparison works best when companies are similar: same industry, similar business models, and comparable size and growth. Comparing a high-growth tech startup with a slow-growing utility is like comparing a sports car with a delivery truck—the numbers reflect very different needs and expectations.

Relative valuation doesn’t tell you the “true” value like a home appraisal might. Instead, it shows where a company sits on a spectrum versus others. Think of it as a map: it won’t tell you your exact destination, but it will help you see whether you’re ahead, behind, or off the main road.

3) Why it matters

Markets often price industries in clusters. Peer comparison helps you see if a stock is expensive or cheap for its group. If a company looks much pricier than peers, you can ask, “Is it justified by faster growth, better margins, or a stronger brand?” If it looks cheaper, ask, “Is something wrong that I’m missing?”

Relative valuation is quick and widely used by professionals. It helps filter ideas and set expectations. It’s also practical when detailed forecasts are hard to build. For beginners, it’s a clear starting point that encourages disciplined, apples-to-apples analysis.

However, context matters. A low multiple isn’t automatically a bargain; it may signal risk or slowing sales. A high multiple isn’t automatically a bubble; it may reflect strong growth or superior profitability. The key is to link the number to business reality.

4) Calculation method

Here are the most common multiples and how to compute them.

• Price-to-Earnings (P/E)

  • What it means: How much investors pay for each dollar of earnings.
  • When to use: Profitable companies with relatively stable earnings.
  • Calculation: P/E = Share Price / Earnings per Share Or on a company level: P/E = Market Capitalization / Net Income

• Enterprise Value to EBITDA (EV/EBITDA)

  • What it means: Value of the entire business (including debt) relative to operating cash profit before interest, taxes, and non-cash charges.
  • When to use: Comparing companies with different debt levels or capital structures.
  • Calculation: Enterprise Value (EV) = Market Cap + Total Debt - Cash EV/EBITDA = Enterprise Value / EBITDA

• Price-to-Sales (P/S)

  • What it means: How much investors pay for each dollar of sales.
  • When to use: Early-stage or low-profit companies where earnings aren’t meaningful yet.
  • Calculation: P/S = Market Cap / Revenue

• Price/Earnings-to-Growth (PEG)

  • What it means: P/E adjusted for expected earnings growth. A simple way to see if a high P/E is justified by fast growth.
  • When to use: Growth companies with reasonably forecastable earnings.
  • Calculation: PEG = (P/E) / Annual EPS Growth Rate (in %)

Step-by-step example (P/E):

1. Find share price and EPS. If the share price is 50 dollars and EPS is 2 dollars: P/E = 50 / 2 = 25x
2. Compare with peers. If peers trade around 20x, your company is pricier relative to earnings.
3. Ask why. Higher growth? Stronger margins? Lower risk? Or just hype?

Step-by-step example (EV/EBITDA):

1. Compute EV. Suppose Market Cap = 1,000 million, Debt = 300 million, Cash = 100 million: EV = 1,000 + 300 - 100 = 1,200 million
2. If EBITDA = 150 million: EV/EBITDA = 1,200 / 150 = 8.0x
3. Compare with peers. If peers average 10.0x, your company trades at a discount.

Step-by-step example (PEG):

1. If P/E = 24x and expected EPS growth = 15%: PEG = 24 / 15 = 1.6
2. A very rough rule some investors quote is PEG<1.5 can be attractive if quality is solid. Always check the assumptions behind growth.

5) Case study

Imagine two coffee shop chains: BeanCo and BrewHub. They operate in the same country, with similar store formats. Here are simplified numbers:

• BeanCo

  • Share Price: 40 dollars
  • Shares Outstanding: 200 million
  • Market Cap: 8,000 million
  • Debt: 1,000 million; Cash: 200 million
  • Net Income: 500 million; EBITDA: 1,200 million; Revenue: 6,000 million
  • Expected EPS Growth (next year): 10%

• BrewHub

  • Share Price: 30 dollars
  • Shares Outstanding: 150 million
  • Market Cap: 4,500 million
  • Debt: 400 million; Cash: 100 million
  • Net Income: 300 million; EBITDA: 700 million; Revenue: 3,200 million
  • Expected EPS Growth (next year): 18%

Compute multiples.

• P/E

  • BeanCo EPS = Net Income / Shares = 500 / 200 = 2.50 dollars BeanCo P/E = 40 / 2.50 = 16.0x
  • BrewHub EPS = 300 / 150 = 2.00 dollars BrewHub P/E = 30 / 2.00 = 15.0x

• EV/EBITDA

  • BeanCo EV = 8,000 + 1,000 - 200 = 8,800 million BeanCo EV/EBITDA = 8,800 / 1,200 = 7.33x
  • BrewHub EV = 4,500 + 400 - 100 = 4,800 million BrewHub EV/EBITDA = 4,800 / 700 = 6.86x

• P/S

  • BeanCo: P/S = 8,000 / 6,000 = 1.33x
  • BrewHub: P/S = 4,500 / 3,200 = 1.41x

• PEG (using next year EPS growth as a simple proxy)

  • BeanCo: PEG = 16.0 / 10 = 1.60
  • BrewHub: PEG = 15.0 / 18 = 0.83

Interpretation:

• On P/E, the two look similar, with BeanCo slightly more expensive.
• On EV/EBITDA, BrewHub is a bit cheaper, even after including debt.
• On P/S, BrewHub is slightly pricier per dollar of sales, likely because it converts sales to profit efficiently or is expected to grow faster.
• On PEG, BrewHub looks more attractive given faster expected growth.

But don’t stop at numbers. Check business differences:

• Margins: If BrewHub’s profit margins are improving, its slightly higher P/S may be justified.
• Execution risk: Faster growth can be riskier. Are new stores profitable?
• Balance sheet: BrewHub’s lower debt reduces risk; BeanCo’s larger scale may offer stability.

6) Practical applications

• Screening for ideas: Filter for companies trading below the peer median EV/EBITDA or P/E, then investigate whether the discount is justified or an opportunity.
• Setting entry ranges: If peers average 10x EV/EBITDA and your target trades at 8x with similar growth and margins, you might consider it undervalued—if risks are manageable.
• Comparing growth vs. value: Use PEG to see whether a high P/E is supported by growth. A higher P/E can be reasonable if growth and margins are superior.
• Adjusting for debt: Prefer EV-based multiples when companies carry different debt loads. Two firms with the same P/E can have very different risk if one is highly leveraged.
• IPO and new listings: When little history is available, compare P/S and EV/EBITDA to established peers to sanity-check the price.
• Monitoring holdings: Track how a company’s multiple moves versus peers over time. A sudden premium or discount can signal changing business prospects.
• Private companies: Use peer multiples as a rough yardstick when valuing a private business, but be conservative since private firms often trade at discounts for liquidity and size.

7) Common misconceptions

8) Summary

Glossary

Relative valuation: Assessing a company's value by comparing it to similar companies using multiples.

Peer group: A set of similar companies in the same industry with comparable size and business models.

Multiple: A ratio that links a company’s value to a financial metric, such as P/E or EV/EBITDA.

P/E (Price-to-Earnings): Market price per share divided by earnings per share.

EV/EBITDA: Enterprise value divided by EBITDA, useful for comparing companies with different debt levels.

Enterprise Value (EV): Market cap plus total debt minus cash; the value of the entire business.

P/S (Price-to-Sales): Market capitalization divided by total revenue.

PEG ratio: P/E divided by the expected EPS growth rate, used to gauge value relative to growth.

EPS (Earnings per Share): Net income divided by the number of shares outstanding.

Leverage: The use of debt to finance a company's operations or growth.