TL;DR: There is no one-size-fits-all valuation formula. DCF, DDM, P/E Ratio, P/B Ratio, EV/EBITDA, and GGM each excel in different scenarios — the key is learning to use the right tool in the right context.
Concepts
Why Do We Need So Many Valuation Models?
Every company operates differently — some generate value through cash flow, some through assets, and some through steady dividends. Just as a doctor cannot diagnose a patient by only taking their temperature, you cannot value a stock using a single metric. Different models act like different "lenses," letting you view a stock's true worth from multiple angles.
Six Major Valuation Models Explained
1. DCF (Discounted Cash Flow)
DCF takes a company's projected future free cash flows and discounts them back to their present value using a discount rate. The sum represents the company's fair value. It is theoretically the most comprehensive valuation method, but it requires estimating many years of cash flow — even small changes in assumptions can lead to vastly different results.
- Best for: Growth companies with predictable cash flows
- Not suitable for: Early-stage startups or cyclical stocks with unstable cash flows
2. DDM (Dividend Discount Model)
Similar in concept to DCF, but instead of cash flows, it discounts future dividends. It works well for companies that pay stable, long-term dividends, but is unusable if a company does not pay dividends or pays them irregularly.
- Best for: Mature companies with stable dividend payments
- Not suitable for: Growth stocks that do not pay dividends
3. P/E Ratio (Price-to-Earnings Ratio)
Share price divided by earnings per share (EPS) — the most intuitive valuation metric. A lower P/E means you are paying less for each dollar of earnings. However, a low P/E does not necessarily mean a stock is cheap; the market may be expecting future earnings to decline.
- Best for: Quick relative comparison of companies within the same industry
- Not suitable for: Loss-making companies (negative EPS makes P/E meaningless)
4. P/B Ratio (Price-to-Book Ratio)
Share price divided by book value per share. This is useful for asset-heavy industries such as banking, construction, and steel. A P/B below 1 means the stock is trading below its book value — it may be undervalued, or there may be concerns about asset quality.
- Best for: Asset-heavy industries, cyclical stocks
- Not suitable for: Asset-light technology or service companies
5. EV/EBITDA
Enterprise value divided by earnings before interest, taxes, depreciation, and amortization. This metric removes the effects of different capital structures (debt levels) and tax rates, making it especially useful for cross-border or cross-industry comparisons.
- Best for: Cross-industry comparison, M&A analysis
- Not suitable for: Financial sector (EBITDA is not meaningful for banks)
6. GGM (Gordon Growth Model)
Assumes dividends grow at a constant rate forever, using the formula P = D1 / (r - g) to calculate fair value. Simple and practical, but it requires the company to have a stable and consistently growing dividend track record.
- Best for: Large, stable dividend-paying stocks (telecom, financials, utilities)
- Not suitable for: Companies that do not pay dividends or have highly variable payouts
How to Choose? Quick Reference Table
| Model | Core Logic | Best Use Case | Key Limitation |
|---|---|---|---|
| DCF | Discount future cash flows | Growth companies with stable cash flows | Highly sensitive to assumptions |
| DDM | Discount future dividends | Stable dividend stocks | Cannot be used if no dividends |
| P/E | Price ÷ Earnings | Quick relative comparison | Cannot be used for loss-making stocks |
| P/B | Price ÷ Book Value | Asset-heavy / cyclical stocks | Misleading for asset-light companies |
| EV/EBITDA | Enterprise Value ÷ Operating Profit | Cross-industry comparison | Not applicable to financials |
| GGM | Perpetual dividend growth | Large stable dividend payers | Sensitive to growth rate assumptions |
Hands-On: Using CTSstock
CTSstock's Valuation tab integrates all six valuation models, so you do not need to build your own Excel spreadsheet.
How to use it:
- Go to the stock analysis page and select the "Valuation" tab
- Results from all six models are displayed side by side for easy cross-referencing
- Each model allows you to adjust key parameters (e.g., discount rate, growth rate)
- Check whether most models point in the same direction — if four out of five models say "undervalued," the conclusion is more credible
Make it a habit: never draw a conclusion from a single model. Cross-validate with at least two or three models for greater confidence.
FAQ
Q: Which model should beginners learn first?
Start with the P/E Ratio — it is the most intuitive and the data is the easiest to obtain. Once you are comfortable, move on to EV/EBITDA for cross-industry comparisons, and then tackle DCF and DDM for deeper analysis.
Q: What if different models produce very different results?
This is normal. First, make sure the models you are using are appropriate for the type of company. If the models are suitable but still disagree, it usually means there is significant uncertainty in the stock's valuation. In that case, you should be more conservative rather than cherry-picking the result you prefer.
Q: Can valuation models predict stock prices?
No. Valuation models estimate "fair value," not "tomorrow's stock price." In the short term, markets are driven by sentiment and capital flows, and prices can deviate from fair value for extended periods. Over the long run, however, stock prices tend to converge toward fair value — and that is where the value of valuation analysis lies.