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Stock valuation is the process of estimating what a company’s shares may be worth based on its financial performance, growth prospects, assets, cash flows, and market conditions. Investors use valuation methods to determine whether a stock appears undervalued, fairly valued, or overvalued.
This article breaks down the stock valuation methods.
Key Takeaways
- Stock valuation aims to find a company's true intrinsic value so you can identify whether it is undervalued or overvalued relative to its market price.
- Absolute models (like DCF and DDM) estimate a company's worth based on its own cash flows, whereas relative models compare its pricing multiples to peers.
- DCF analysis projects future free cash flows and discounts them back to present value, making it a gold standard for long-term equity valuation.
- The DDM works well for mature, stable dividend-paying firms but fails for growth companies that reinvest their earnings rather than paying dividends.
- Valuation models are heavily sensitive to underlying inputs; minor changes in growth or discount rate assumptions can drastically shift the output value.
What is Stock Valuation?
Stock valuation is the quantitative process of determining the current or projected worth of a share of stock. By examining a company's financial statements, earnings power, growth prospects, and risk profile, investors attempt to calculate an intrinsic value.
Why Stock Valuation Matters
Stock valuation matters because it bridges the gap between a company's business performance and your financial decision.
Here is why stock valuation is critical for every investor:
- Separates price from value: Market prices fluctuate daily based on hype, sentiment, and short-term news. Valuation helps you find a stock's intrinsic value so you can identify whether it is genuinely undervalued or dangerously overvalued.
- Protects your capital (Margin of Safety): By calculating what a company is truly worth, value-focused investors can demand a safety margin, buying only when a stock trades at a discount, which helps protect against forecasting errors and market downturns.
- Guides strategic decision-making: Knowing how to value a stock dictates your investment approach. It helps you decide whether to target stable, cash-generating dividend stocks, explosive growth companies, or balanced GARP (Growth at a Reasonable Price) plays.
- Prevents overpaying for growth: High-flying growth stocks often look exciting, but valuation metrics (such as the P/E or PEG ratio) reveal whether the expected future growth is already priced in.
- Improves long-term portfolio returns: Relying on objective valuation rather than emotional momentum prevents you from buying at market peaks and panic-selling during corrections, leading to healthier long-term wealth accumulation.
Major Stock Valuation Methods
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Price-to-Earnings (P/E) Ratio
The P/E ratio compares a company’s share price with its earnings per share (EPS).
P/E Ratio = Market Price per Share ÷ Earnings per Share
For example, if a stock trades at ₹500 and its EPS is ₹25, its P/E ratio is 20.
A lower P/E may indicate that a stock is relatively inexpensive compared with its earnings, while a higher P/E may reflect stronger growth expectations. However, P/E ratios should ideally be compared with similar companies in the same industry.
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Price-to-Book (P/B) Ratio
The P/B ratio compares a company's market value with its book value.
P/B Ratio = Market Price per Share ÷ Book Value per Share
This method can be particularly useful for businesses where assets and net worth are important, such as banks and financial institutions.
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Price-to-Sales (P/S) Ratio
The P/S ratio compares a company's market value with its revenue.
P/S Ratio = Market Capitalisation ÷ Total Revenue
It can be useful for companies with strong revenue but limited or negative profits, making earnings-based valuation less meaningful.
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Discounted Cash Flow (DCF) Method
The Discounted Cash Flow method estimates a company's intrinsic value by calculating the present value of its expected future cash flows.
Future cash flows are discounted because money received in the future is generally worth less than money received today.
DCF can provide a detailed estimate of intrinsic value, but the result is highly sensitive to assumptions about revenue growth, margins, cash flows, and the discount rate.
A standard DCF calculation adds up the present value of each forecast year's free cash flow, plus the present value of the terminal value (the value of all cash flows after the forecast period):
DCF Value = [FCF₁ ÷ (1 + r)¹] + [FCF₂ ÷ (1 + r)²] + … + [FCFₙ ÷ (1 + r)ⁿ] + [Terminal Value ÷ (1 + r)ⁿ]
Terminal Value = FCFₙ × (1 + g) ÷ (r − g)
Here, FCF is free cash flow, r is the discount rate (usually the WACC), g is the long-term growth rate, and n is the last forecast year.
Example (illustrative numbers): Suppose a company is expected to generate free cash flow of ₹100 crore, ₹110 crore, and ₹120 crore over the next three years. Assume a discount rate of 10% and a long-term growth rate of 5%.
Step 1: Present value of each year's cash flow
Year 1: 100 ÷ 1.10 = ₹90.91 crore
Year 2: 110 ÷ 1.10² = ₹90.91 crore
Year 3: 120 ÷ 1.10³ = ₹90.16 crore
Total = about ₹271.98 croreStep 2: Terminal value
120 × 1.05 ÷ (0.10 − 0.05) = ₹2,520 crore
Present value of terminal value = 2,520 ÷ 1.10³ = about ₹1,893.32 croreStep 3: Add both parts
271.98 + 1,893.32 = about ₹2,165.3 croreThis is the estimated value of the whole business.
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Dividend Discount Model (DDM)
The Dividend Discount Model values a stock based on the present value of its expected future dividends.
It is most suitable for companies with stable and predictable dividend payments.
Under a simple constant-growth model:
Stock Value = Expected Dividend Next Year ÷ (Required Return − Dividend Growth Rate)
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EV/EBITDA Valuation
Enterprise Value-to-EBITDA (EV/EBITDA) compares a company's enterprise value with its earnings before interest, taxes, depreciation, and amortisation.
Unlike P/E, this method accounts for a company's debt and cash position, making it useful for comparing companies with different capital structures.
The formulas are:
Enterprise Value (EV) = Market Capitalisation + Total Debt − Cash and Cash Equivalents
EV/EBITDA = Enterprise Value ÷ EBITDA
A fuller version of the EV formula also adds preferred shares and minority interest.
Example (illustrative numbers): A company has a market capitalisation of ₹500 crore, total debt of ₹200 crore, and cash of ₹50 crore. Its EBITDA is ₹100 crore.
EV = 500 + 200 − 50 = ₹650 crore
EV/EBITDA = 650 ÷ 100 = 6.5This means the market values the whole business at 6.5 times its yearly EBITDA. The figure is most useful when compared with similar companies in the same industry.
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Comparable Company Analysis
This approach values a company by comparing its valuation multiples with those of similar companies.
For example, an investor may compare companies based on:
- P/E ratio
- P/B ratio
- EV/EBITDA
- P/S ratio
If a company trades at a significantly higher or lower multiple than its peers, investors can investigate whether the difference is justified by its growth, profitability, risk, or other fundamentals.
- Asset-Based Valuation
Asset-based valuation estimates a company's value based primarily on the difference between its assets and its liabilities.
It can be particularly relevant for companies where tangible assets constitute a significant portion of their value. However, it may be less suitable for asset-light businesses, such as technology companies.
The formula is:
Net Asset Value = Total Assets − Total Liabilities
Assets are usually adjusted to their fair market value first, because balance-sheet figures are based on historical cost and can differ from what the assets would fetch today.
Example (illustrative numbers): After adjusting to fair market value, a company's assets are worth ₹300 crore and its liabilities are ₹180 crore.
Net Asset Value = 300 − 180 = ₹120 crore
If the company has 10 crore shares, the asset-based value is ₹120 crore ÷ 10 crore = ₹12 per share.
Which Stock Valuation Method is Used for What?
| Company Type | Commonly Used Methods |
| Mature, profitable companies | P/E, DCF, EV/EBITDA |
| Banks and financial companies | P/B, P/E |
| High-growth companies | P/S, DCF, EV/EBITDA |
| Dividend-paying companies | DDM, P/E |
| Asset-heavy companies | P/B, Asset-based valuation |
| Companies with negative earnings | P/S, EV/Revenue |
DCF is generally used for high-growth companies that reinvest earnings, while DDM suits mature companies with consistent dividend payments. Asset-based models are useful for asset-intensive businesses, whereas P/E, P/B and EV/EBITDA multiples help with quick peer and sector comparisons.
Conclusion
No single metric or model can predict a stock's future path with absolute certainty, as every approach comes with its own trade-offs and sensitivity assumptions. While absolute models like DCF focus deeply on intrinsic cash-generating power, relative multiples and peer comparisons provide crucial market context instantly.
