Equity Markets and Stock Instruments › Key Parameters

The key valuation metrics for equity analysis are:

• Market Capitalization: Total equity value (price × shares outstanding). Determines size classification and influences liquidity characteristics.
• P/E Ratio (Trailing): Price relative to past earnings. Higher ratios suggest growth expectations or overvaluation.
• P/E Ratio (Forward): Price relative to projected earnings. Incorporates analyst estimates of future profitability.
• Dividend Yield: Annual dividends as a percentage of price. A high yield can reflect a substantial dividend, a falling share price or both; it does not by itself establish dividend sustainability.
• Earnings Yield: Inverse of P/E ratio. Facilitates comparison with bond yields and other income assets.
• Book Value: Accounting shareholders’ equity (recognized assets minus recognized liabilities). It is not a guaranteed liquidation value.
• Price-to-Book Ratio: Market value relative to book value. Ratios below 1 may indicate undervaluation or distress.

Book value is the accounting residual of recognized assets less recognized liabilities. Their measurement depends on the applicable accounting standards: some items use historical cost, others other measurement bases. This identity is not a statement about what a liquidation would realize:

$$\text{Book Value} = \text{Total Assets} - \text{Total Liabilities}$$

where:

• $\text{Total Assets}$: recognized assets reported on the balance sheet under the applicable accounting standards (for example, cash, equipment, inventory and qualifying recognized intangible assets)
• $\text{Total Liabilities}$: recognized liabilities reported on the balance sheet under the applicable accounting standards (for example, debt, accounts payable and recognized pension obligations)

If every asset were realized at its carrying amount and every liability settled at its carrying amount without extra costs, the residual would equal book equity. Those assumptions need not hold. Assets may sell below book value, unrecognized obligations or liquidation costs can arise, and common shareholders can receive zero. Book equity is therefore not a floor on company value or shareholder recovery. Recognition rules also mean that internally generated brands and other intangible economic value need not appear as balance-sheet assets.

The price-to-book (P/B) ratio compares market value to book value:

$$\text{P/B Ratio} = \frac{\text{Market Cap}}{\text{Book Value}} = \frac{P}{\text{Book Value per Share}}$$

where:

• $\text{Market Cap}$: total market value of all outstanding shares
• $\text{Book Value}$: total shareholders' equity from the balance sheet
• $P$: current stock price per share
• $\text{Book Value per Share}$: book value divided by shares outstanding

Both forms of the ratio are equivalent. The first uses total company values, the second uses per-share values. The ratio answers: "How many dollars do investors pay for each dollar of accounting net worth?"

A P/B below 1 suggests the market values the company below its accounting net worth, possibly a sign of distress or undervaluation. If the market believes assets are impaired or earnings prospects are bleak, it may value the company below what the books say it's worth. Book value is not a liquidation appraisal. Asset carrying amounts, expected profitability and risk can differ substantially across firms and industries, so a P/B near or below 1 does not establish that assets are easy to value. Some internally generated intangible resources are not recognized as assets under accounting standards. Their contribution to expected cash flows can help explain a market value above book equity, but a high P/B does not establish the value of those resources or prove that a stock is fairly priced.