Stock Metrics Explained
Understanding key financial metrics is the foundation of stock research. This section breaks down the most important metrics used to evaluate and compare U.S. stocks — in simple, beginner-friendly terms.
📊 P/E Ratio (Price-to-Earnings Ratio)
What it is: The P/E ratio divides a company’s current stock price by its earnings per share (EPS). It tells you how much investors are willing to pay for each dollar of the company’s earnings.
Formula: P/E = Stock Price ÷ Earnings Per Share
How to use it: A lower P/E may suggest a stock is undervalued relative to its earnings; a higher P/E may reflect high growth expectations. Always compare P/E ratios within the same industry for meaningful context.
📊 P/B Ratio (Price-to-Book Ratio)
What it is: The P/B ratio compares a company’s market value (stock price × shares outstanding) to its book value (total assets minus total liabilities).
Formula: P/B = Stock Price ÷ Book Value Per Share
How to use it: A P/B below 1.0 may indicate the stock is trading below the company’s net asset value — often a signal value investors look for. Higher P/B ratios are common in asset-light businesses like technology companies.
📊 ROE (Return on Equity)
What it is: ROE measures how efficiently a company generates profit from shareholders’ equity. It shows how well management is using the capital invested by shareholders.
Formula: ROE = Net Income ÷ Shareholders’ Equity
How to use it: A consistently high ROE (above 15–20%) is generally a positive sign. Compare ROE within the same industry, as capital intensity varies significantly between sectors.
📊 Dividend Yield
What it is: Dividend yield expresses a company’s annual dividend payment as a percentage of its current stock price. It tells income-focused investors how much return they can expect from dividends alone.
Formula: Dividend Yield = Annual Dividend Per Share ÷ Stock Price × 100
How to use it: Higher yields can be attractive for income investing, but unusually high yields may signal financial stress. Always check the company’s ability to sustain dividends (payout ratio, earnings stability).
📊 Market Capitalization
What it is: Market cap is the total market value of all a company’s outstanding shares. It’s used to classify stocks by size.
Formula: Market Cap = Stock Price × Shares Outstanding
Categories:
- Large Cap: Over $10 billion — typically established, stable companies
- Mid Cap: $2 billion to $10 billion — often growth-oriented companies
- Small Cap: Under $2 billion — higher growth potential, higher risk
📊 Debt-to-Equity Ratio (D/E)
What it is: Measures how much debt a company is using relative to its equity. A higher D/E ratio means more financial leverage and potentially more risk.
Formula: D/E = Total Debt ÷ Shareholders’ Equity
📊 Earnings Per Share (EPS)
What it is: EPS represents the portion of a company’s profit allocated to each outstanding share of common stock.
Formula: EPS = Net Income ÷ Shares Outstanding
How to use it: Growing EPS over time is generally a positive indicator of a company’s financial health and profitability.
Explore our Stock Guides for in-depth explanations and practical examples of how to use these metrics in your stock research.
Disclaimer: All metric explanations are for educational purposes only and do not constitute investment advice.