Stock Valuation Methods
Stock valuation is the process of estimating a stock’s intrinsic value — what it is actually worth based on fundamentals, independent of its current market price. If intrinsic value exceeds the market price, the stock may be undervalued. If the market price exceeds intrinsic value, it may be overvalued.
The Two Main Approaches
| Approach | Absolute Valuation | Relative Valuation |
|---|---|---|
| Method | Estimate intrinsic value from cash flows | Compare valuation multiples to peers |
| Key tool | DCF model | Comparable company analysis |
| Output | Dollar value per share | “Cheap” or “expensive” relative to group |
| Strength | Based on fundamentals, not market mood | Quick, market-anchored, intuitive |
| Weakness | Highly sensitive to assumptions | Entire sector can be over/undervalued |
Discounted Cash Flow (DCF)
The gold standard of absolute valuation. A DCF projects a company’s free cash flows into the future and discounts them back to the present using WACC.
| Step | What You Do | Key Input |
|---|---|---|
| 1. Project cash flows | Forecast FCF for 5-10 years | Revenue growth, margins, capex |
| 2. Calculate terminal value | Value beyond forecast period | Perpetuity growth rate (2-3%) |
| 3. Discount to present | Apply WACC to each cash flow | Cost of equity, cost of debt |
| 4. Calculate equity value | Subtract net debt | Total debt minus cash |
| 5. Per-share value | Divide by shares outstanding | Diluted share count |
See our full DCF model cheat sheet for detailed formulas and a step-by-step walkthrough.
Dividend Discount Model (DDM)
For mature, dividend-paying companies. The DDM values a stock as the present value of all future dividends. The Gordon Growth Model is the most common version:
Where D₁ = next year’s expected dividend, r = required return, g = dividend growth rate. Only works when g < r and the company has a stable, predictable dividend policy. Best for utilities, banks, and blue-chip companies. See our dividend investing guide.
Relative Valuation Multiples
| Multiple | Formula | Best For | Typical Range |
|---|---|---|---|
| P/E | Price / EPS | Profitable companies | 15-25× (varies by sector) |
| PEG | P/E / EPS growth rate | Growth companies | <1 = undervalued, >2 = expensive |
| P/B | Price / Book value | Banks, asset-heavy companies | 1-3× |
| P/S | Price / Revenue | Unprofitable growth companies | 1-10× (highly variable) |
| EV/EBITDA | EV / EBITDA | Cross-company comparisons | 8-15× |
| EV/Revenue | EV / Revenue | High-growth, pre-profit companies | 2-20× |
For detailed ratio analysis, see our valuation ratios cheat sheet.
Comparable Company Analysis (Comps)
Select a group of similar public companies, calculate their valuation multiples, and apply the median or mean multiple to the target company’s financials. This gives you a market-implied value range.
| Step | Action |
|---|---|
| 1 | Identify 5-10 comparable companies (same industry, size, growth) |
| 2 | Calculate valuation multiples for each (EV/EBITDA, P/E, etc.) |
| 3 | Find the median and mean of the peer group |
| 4 | Apply the median multiple to the target’s financials |
| 5 | Calculate implied share price |
See our comparable company analysis cheat sheet for the full process.
When to Use Each Method
| Situation | Best Method | Why |
|---|---|---|
| Stable, profitable company | DCF + P/E comps | Predictable cash flows make DCF reliable |
| High-growth, no profits | P/S or EV/Revenue comps | No earnings to base P/E or DCF on |
| Mature dividend payer | DDM + dividend yield | Dividends are the primary return driver |
| Bank or financial | P/B + P/E | Book value is meaningful for asset-based businesses |
| M&A target | Precedent transactions | Shows what acquirers actually paid |
| Any investment decision | Multiple methods combined | Triangulation gives a more reliable value range |
Never rely on a single valuation method. Use at least two — typically a DCF for intrinsic value and comps for a market reality check. If the DCF says $120 per share but every comparable company implies $80, either your DCF assumptions are too aggressive or the market is mispricing the peers. The gap forces you to stress-test your thinking.
Using trailing multiples for a company whose earnings are about to change dramatically. A stock at 10× trailing P/E looks cheap until you realize next year’s earnings will drop 50%, making the forward P/E 20×. Always check whether earnings are trending up or down before judging a multiple.
Key Takeaways
- DCF estimates intrinsic value from projected cash flows — it is the most rigorous method but highly sensitive to assumptions.
- Relative valuation compares multiples (P/E, EV/EBITDA) against peers — fast and intuitive but assumes the market prices peers correctly.
- The DDM values dividend stocks as the present value of future dividends — best for stable, mature payers.
- Always use multiple methods and compare the results. Discrepancies highlight where your assumptions might be wrong.
- Valuation is an art backed by math — no model gives a precise answer, but a disciplined process narrows the range.
Frequently Asked Questions
What is the best stock valuation method?
There is no single best method. DCF is the most theoretically sound but requires many assumptions. P/E and EV/EBITDA comparisons are faster and market-anchored. Professional analysts use multiple methods and triangulate — the overlap between approaches is where you find the most reliable value range.
How do you value a stock that has no earnings?
Use revenue-based multiples like P/S or EV/Revenue compared to similar companies. You can also run a DCF based on projected future earnings once the company reaches profitability. For pre-revenue startups, comparable transaction data or VC-style discounted milestone analysis is used.
What P/E ratio is considered good?
It depends entirely on the sector, growth rate, and market conditions. The S&P 500 historically trades at 15-20× trailing earnings. A fast-growing tech company at 30× may be reasonable; a no-growth utility at 30× would be expensive. Always compare P/E to the company’s growth rate using the PEG ratio.
Why is EV/EBITDA preferred over P/E for comparisons?
EV/EBITDA accounts for differences in capital structure (debt vs. equity), tax rates, and depreciation policies across companies. P/E is distorted by leverage and tax differences. EV/EBITDA provides a cleaner apples-to-apples comparison, which is why it is the standard in investment banking and M&A.
What is a margin of safety in stock valuation?
The margin of safety is the difference between a stock’s intrinsic value and its market price. If your DCF suggests a stock is worth $100 but it trades at $70, you have a 30% margin of safety. This buffer protects against errors in your assumptions. Value investors like Benjamin Graham typically require a 20-30% margin of safety before buying.