Fundamental Analysis
Master the key metrics that drive smart investment decisions
💰 Valuation Metrics
The P/E ratio measures how much investors are willing to pay for each dollar of company earnings. It’s the most widely used valuation metric and helps investors understand whether a stock is expensive or cheap relative to its earnings power.
Value stocks: 10-20
Market average: ~15-20
Consider growth rate
Check earnings quality
Backward-looking
Can be manipulated
Apple (AAPL): If Apple trades at $180 and has an EPS of $6.00, its P/E ratio is 30 (180 ÷ 6). This means investors pay $30 for every $1 of Apple’s annual earnings. Compare this to the tech sector average of ~25 to determine if it’s expensive.
📱 P/E Calculator
The P/B ratio compares a company’s market value to its book value (assets minus liabilities). It helps identify undervalued companies trading below their net asset value and is especially useful for evaluating asset-heavy businesses like banks and real estate.
P/B 1-3: Reasonable range
P/B > 5: Potentially overvalued
Real estate companies
Manufacturing businesses
P/B ratio is less useful for service companies or tech firms with few physical assets. Their value comes from intellectual property, brand recognition, and human capital, which aren’t reflected in book value.
EV/EBITDA provides a more comprehensive valuation by including debt and cash positions. It’s excellent for comparing companies with different capital structures and is widely used by professional investors and analysts.
Less affected by accounting
Better for comparisons
Growth companies: 15-25
High-growth: 25+
📈 Profitability Metrics
ROE measures how effectively a company uses shareholders’ investments to generate profits. It’s one of the most important profitability metrics, showing management’s efficiency in creating value for shareholders.
Good: 15-20%
Average: 10-15%
Poor: <10%
Look for companies with consistent ROE above 15% over multiple years. This indicates sustainable competitive advantages and strong management execution.
Operating margin reveals how much profit a company generates from its core business operations, excluding interest and taxes. It’s a pure measure of operational efficiency and pricing power.
Retail: 3-8%
Airlines: 5-15%
Stable margins = consistent execution
Falling margins = increasing competition
| Profitability Metric | What It Measures | Excellent | Good | Average | Poor |
|---|---|---|---|---|---|
| Gross Margin | Revenue after direct costs | >60% | 40-60% | 20-40% | <20% |
| Operating Margin | Operational efficiency | >20% | 15-20% | 5-15% | <5% |
| Net Margin | Bottom-line profitability | >15% | 10-15% | 3-10% | <3% |
| ROE | Shareholder value creation | >20% | 15-20% | 10-15% | <10% |
| ROA | Asset utilization | >10% | 7-10% | 3-7% | <3% |
🚀 Growth & Performance Metrics
Revenue growth shows how quickly a company is expanding its business. Consistent revenue growth indicates strong market demand, effective execution, and competitive positioning.
Moderate growth: 10-20%
Slow growth: 3-10%
Declining: <3%
Check customer retention
Analyze market size
The PEG ratio adjusts the P/E ratio for growth, helping investors determine if a stock’s valuation is justified by its growth prospects. It’s particularly useful for evaluating growth stocks.
PEG = 1: Fairly valued
PEG > 1: Potentially overvalued
If a stock has a P/E of 30 and is growing earnings at 20% annually, its PEG ratio is 1.5 (30 ÷ 20). This suggests the stock might be overvalued relative to its growth rate.
⚖️ Risk Metrics
The debt-to-equity ratio measures financial leverage and indicates how much debt a company uses to finance its assets relative to shareholder equity. Higher ratios increase financial risk but can amplify returns.
Moderate: 0.3-0.6
Aggressive: 0.6-1.0
High risk: >1.0
Tech: Low debt preferred
Real Estate: Moderate debt
The current ratio measures a company’s ability to pay short-term obligations. It indicates liquidity and financial health in the near term.
Good: 1.5-2.0
Adequate: 1.0-1.5
Poor: <1.0
A current ratio below 1.0 means current liabilities exceed current assets, potentially indicating cash flow problems or financial distress.
🔬 Advanced Metrics
Free cash flow yield shows how much cash a company generates relative to its market value. It’s often considered more reliable than earnings-based metrics because cash flow is harder to manipulate through accounting practices.
Good: 5-10%
Average: 2-5%
Poor: <2%
Harder to manipulate
Shows true profitability
ROIC measures how efficiently a company allocates capital to profitable investments. It’s Warren Buffett’s preferred metric for evaluating management effectiveness and competitive advantages.
Excellent: 15-25%
Good: 10-15%
Average: 5-10%
Warren Buffett looks for companies with ROIC consistently above 15%. These businesses can reinvest profits at high returns, creating compound growth for shareholders.
The P/S ratio is useful for evaluating companies with little or no profits, such as early-stage growth companies or those in turnaround situations. Revenue is harder to manipulate than earnings.
Retail: 0.5-2
Manufacturing: 1-3
Biotech: 2-10+
Early growth stage
Cyclical businesses
🧮 Practical Analysis Framework
1. Valuation Check (Is it reasonably priced?)
- ✅ Compare P/E ratio to industry average
- ✅ Check PEG ratio (should be <1.5 for growth stocks)
- ✅ Review EV/EBITDA vs competitors
- ✅ Calculate free cash flow yield (target >5%)
2. Quality Assessment (Is it a good business?)
- ✅ ROE consistently above 15%
- ✅ ROIC higher than 12%
- ✅ Operating margins stable or improving
- ✅ Revenue growth consistent
3. Safety Evaluation (Can it survive tough times?)
- ✅ Current ratio above 1.5
- ✅ Debt-to-equity below 0.5 (varies by industry)
- ✅ Interest coverage ratio above 5
- ✅ Positive free cash flow
4. Growth Prospects (Will it grow?)
- ✅ Revenue growth above GDP growth
- ✅ Expanding market opportunity
- ✅ Competitive advantages (moat)
- ✅ Strong management track record
🎯 Quick Valuation Calculator
| Investment Style | Key Metrics to Focus On | Target Ranges | Red Flags |
|---|---|---|---|
| Value Investing | P/E, P/B, P/S, Free Cash Flow Yield | P/E <15, P/B <2, FCF Yield >8% | Declining revenue, high debt |
| Growth Investing | Revenue Growth, PEG, ROE, ROIC | Growth >20%, PEG <1.5, ROE >20% | Slowing growth, high valuation |
| Dividend Investing | Dividend Yield, Payout Ratio, FCF | Yield 3-6%, Payout <60% | Payout >80%, declining FCF |
| Quality Investing | ROE, ROIC, Debt/Equity, Margins | ROE >15%, ROIC >12%, D/E <0.5 | Inconsistent profits, high debt |
📈 Industry-Specific Considerations
- Ratio in isolation: Always compare metrics within industry context
- Ignoring trends: Look at 3-5 year trends, not just current numbers
- Overlooking quality: A cheap stock isn’t always a good investment
- Missing the big picture: Consider economic cycles and industry dynamics
- Accounting manipulation: Be aware of non-GAAP adjustments and one-time items
- Use multiple metrics: No single ratio tells the complete story
- Focus on trends: Improving metrics are often more important than absolute levels
- Read the footnotes: Important details are often buried in financial statement notes
- Compare to competitors: Relative performance within industry matters most
- Consider the cycle: Some businesses are naturally cyclical