How to Use Relative Valuation Methods: A Masterclass for Modern Investors

At its core, relative valuation is built on the principle of price discovery through comparison. It assumes that if two companies are similar in their operations, growth prospects, and risk profiles, they should trade at similar price multiples.

Think of it as shopping for a car. If a brand new sedan from Company A costs thirty thousand dollars, you would be rightfully suspicious if a nearly identical sedan from Company B was priced at sixty thousand dollars. In the stock market, these “price tags” are expressed as multiples of earnings, sales, or book value.

It is important to distinguish this from intrinsic valuation, such as the Discounted Cash Flow (DCF) model. Intrinsic valuation is like valuing a tree based on how much fruit it will produce over its lifetime. Relative valuation is valuing the tree based on what the orchard down the road just sold for. 

While intrinsic models are theoretically superior, they rely on dozens of assumptions about the distant future. Relative valuation is grounded in the “here and now” of market sentiment.

To perform a relative valuation, you need to understand the different ratios used to compare companies. Each ratio offers a unique lens through which to view a company’s financial health.

The P/E ratio is the most popular metric in the investing world. It is calculated by dividing the current stock price by the earnings per share (EPS).

• Practical Application: If a company has a P/E of 15, it means investors are willing to pay fifteen dollars for every one dollar of annual profit.
• The Caveat: High P/E ratios often signal that the market expects high growth in the future. However, a “cheap” P/E of 5 might be a warning sign that the company’s earnings are about to collapse. This is often called a value trap.

Sometimes, a company is not yet profitable because it is reinvesting every cent into growth. This is common in the tech and biotech sectors. In these cases, the P/S ratio is your best friend. It compares the total market capitalization to the total revenue.

• Practical Application: For a software startup, a P/S of 10 might be standard. For a grocery store with razor thin margins, a P/S of 0.5 might be considered expensive.

The P/B ratio compares the market’s valuation of a company to its “book value” or net asset value. This is particularly useful for capital intensive industries like banking or insurance where the value is tied directly to the assets on the balance sheet.

While the P/E ratio is helpful, it has a major flaw: it ignores debt. Two companies might have the same earnings, but if one has ten billion dollars in debt and the other has ten billion dollars in cash, they are not worth the same. This is where Enterprise Value (EV) comes in.

The EV/EBITDA multiple is often considered the gold standard of relative valuation.

• Enterprise Value (EV) is the total price of the company, including its debt and excluding its cash.
• EBITDA represents the core operating profit before accounting tricks and tax variations get in the way.

By using this ratio, you are looking at the business as if you were buying the whole thing outright, debt and all. It allows for a much cleaner comparison between companies with different levels of leverage.

A valuation multiple is useless without context. If you are valuing a high growth tech company, comparing it to a slow growth utility company will lead to disaster. Selecting a “Peer Group” or “Comps” is where the science of finance meets the art of investigation.

1. Industry Alignment: Ensure the companies operate in the same sector and face the same regulatory environment.
2. Size Matters: A small “micro cap” company usually trades at a discount compared to a “mega cap” industry leader because it carries more risk.
3. Growth Profiles: Do not compare a company growing revenue at 50% per year to one growing at 2%. The faster grower deserves a higher multiple.
4. Geographic Footprint: Companies operating in emerging markets often trade at lower multiples than those in stable, developed economies due to currency and political risks.

Relative valuation is powerful, but it can be dangerous if used blindly. Because you are comparing a stock to the market, you run the risk of buying a stock that is “cheap” in an “overpriced” sector.

During the Dot Com bubble of the late 1990s, many tech stocks looked “cheap” relative to their peers. However, the entire sector was drastically overvalued. Relative valuation will tell you which house on the block is the best deal, but it won’t tell you if the entire neighborhood is about to be flooded.

To mitigate these risks, always use a “Margin of Safety.” If your relative valuation suggests a stock is worth fifty dollars and it is currently trading at forty eight dollars, that is a very thin margin. Professional investors often look for a 20% or 30% discount to their calculated value before pulling the trigger.

Furthermore, combine your relative valuation with a quick check of the company’s debt to equity ratio. A “cheap” stock that is drowning in debt is often cheap for a reason.

There is no single “good” P/E ratio. A P/E of 20 might be cheap for a tech company growing at 30% annually but very expensive for a mature utility company growing at 2% annually. Always compare the P/E to the industry average and the company’s historical range.

Yes, if a company is losing money, its earnings are negative, resulting in a negative P/E. In these cases, investors usually switch to the Price to Sales (P/S) ratio or EV/EBITDA to get a better sense of valuation.

EV/EBITDA is often preferred because it is “capital structure neutral.” It allows you to compare companies with different levels of debt more accurately than the P/E ratio, which only looks at the equity portion of the business.

It means the stock’s valuation multiples are lower than the average multiples of similar companies in the same industry. This could indicate the stock is undervalued, or it could mean the market perceives a specific risk with that company.

Generally, a peer group of five to ten closely related companies provides a robust average. Using too few companies can lead to skewed results if one of those companies is an outlier.

It works for most, but the specific multiple changes. For example, P/B is best for banks, EV/EBITDA is great for manufacturing, and P/S is often used for high growth software companies.

Relative valuation is an indispensable tool for any investor looking to navigate the complexities of the financial markets. By understanding how to use multiples like P/E, P/S, and EV/EBITDA, you can move beyond guesswork and start making decisions based on hard market data.

Remember that valuation is not just about finding the lowest number; it is about finding the best value relative to the growth and risk you are taking on. Start by picking three companies in an industry you understand, calculate their multiples, and compare them. You might be surprised at what the numbers reveal about which stocks are truly worth your hard earned capital.