12 Key Metrics to Analyze Before Buying a Stock
Investing in stocks without a framework is speculation. These 12 metrics — from P/E ratio to FCF yield — form a systematic checklist that serious investors use to separate quality companies from traps.
Ram
Stock picking is part science, part judgment. The science lives in the metrics. Without a quantitative framework, you're relying on tips, headlines, or gut feel — all of which reliably underperform the market over time. Here are the 12 metrics that matter most.
Why Metrics Alone Aren't Enough
Before diving in: metrics confirm a thesis — they don't replace one. Start with the business model, competitive moat, and industry dynamics. Then use these metrics to validate or reject what you see qualitatively.
1. Price-to-Earnings (P/E) Ratio
$$ \text{P/E} = \frac{\text{Market Price per Share}}{\text{Earnings per Share (EPS)}} $$
What it tells you: How much investors are paying per rupee of earnings. A high P/E can mean growth expectations are priced in — or the stock is overvalued. Context matters: Compare P/E against the sector average and the company's own historical range. A P/E of 40 is expensive for a utility company but cheap for a high-growth SaaS business.2. Price-to-Book (P/B) Ratio
$$ \text{P/B} = \frac{\text{Market Price per Share}}{\text{Book Value per Share}} $$
What it tells you: Compares market value to net assets. A ratio below 1 can indicate undervaluation — or deteriorating fundamentals. Best used for asset-heavy sectors: banking, manufacturing, real estate.3. Return on Equity (ROE)
$$ \text{ROE} = \frac{\text{Net Income}}{\text{Shareholders' Equity}} \times 100 $$
What it tells you: How efficiently the company generates profit from shareholders' capital. Consistently high ROE (>15-20%) over many years signals a competitive advantage — one of Warren Buffett's primary screening criteria. Watch out: High ROE driven by excessive debt is misleading. Always pair ROE with the debt-to-equity ratio.4. Debt-to-Equity (D/E) Ratio
$$ \text{D/E} = \frac{\text{Total Liabilities}}{\text{Shareholders' Equity}} $$
What it tells you: Capital structure leverage. A high D/E amplifies both gains and losses. For most businesses, a D/E below 1 is conservative; above 2 warrants scrutiny. Sector-specific: Banks and NBFCs naturally operate with high leverage — don't apply the same benchmark blindly.5. Revenue Growth Rate (YoY)
Consistent top-line growth across economic cycles indicates pricing power and market share capture. Look for:
- 3-year CAGR: Smooths out single-year anomalies
- Organic vs. inorganic growth: Acquisition-driven growth is riskier than organic
- Margin trend with revenue: Revenue growth that compresses margins is a red flag
6. Operating Profit Margin (OPM)
$$ \text{OPM} = \frac{\text{EBIT}}{\text{Revenue}} \times 100 $$
What it tells you: Operational efficiency before financing costs. Expanding margins over time = pricing power and/or scale advantages. Contracting margins signal competitive pressure or cost inflation.7. Free Cash Flow (FCF)
$$ \text{FCF} = \text{Operating Cash Flow} - \text{Capital Expenditure} $$
The most honest metric in finance. Earnings can be manipulated through accounting choices; cash flow is harder to fake. Companies with consistent positive FCF can self-fund growth, return capital, and survive downturns. FCF Yield = FCF / Market Cap. Above 5-6% is attractive for value investors.8. Interest Coverage Ratio
$$ \text{ICR} = \frac{\text{EBIT}}{\text{Interest Expense}} $$
What it tells you: Can the company comfortably service its debt from operations? An ICR below 1.5 means the company struggles to pay interest — a serious warning sign. Above 3 is healthy.9. Return on Capital Employed (ROCE)
$$ \text{ROCE} = \frac{\text{EBIT}}{\text{Capital Employed}} \times 100 $$
What it tells you: Returns generated on all capital invested (debt + equity). ROCE consistently above the cost of capital = value creation. Below = value destruction. Compare ROCE vs. weighted average cost of capital (WACC).10. Promoter Holding & Pledge Data
Not a formula — a disclosure check. High promoter holding (>50%) signals confidence in the business. But pledged promoter shares are a risk indicator: if stock price falls, lenders may trigger forced selling, cascading the decline.Available in BSE/NSE quarterly shareholding disclosures. Red flags:
- Promoter holding declining consistently
- Pledge % above 25-30% of promoter holding
11. Price-to-Earnings-Growth (PEG) Ratio
$$ \text{PEG} = \frac{\text{P/E Ratio}}{\text{Earnings Growth Rate (\%)}} $$
What it tells you: Adjusts P/E for growth. A PEG of 1 means you're paying fairly for growth. Below 1 = potentially undervalued for its growth rate. Popularized by Peter Lynch.12. Dividend Yield & Payout Ratio
$$ \text{Dividend Yield} = \frac{\text{Annual Dividend per Share}}{\text{Market Price}} \times 100 $$
$$ \text{Payout Ratio} = \frac{\text{Dividends Paid}}{\text{Net Income}} \times 100 $$
What it tells you: Dividend yield indicates income return. Payout ratio reveals sustainability — a ratio above 80% leaves little room for reinvestment; below 30-40% suggests retained earnings being deployed for growth.Putting It Together: A Screening Checklist
| Metric | Minimum Threshold | Green Flag |
|---|---|---|
| P/E | Below sector avg | Historical range overlap |
| ROE | > 15% | Consistent 5+ years |
| D/E | < 1.5 | Declining trend |
| Revenue Growth | > 12% CAGR | Margin improvement |
| OPM | > 15% | Expanding |
| FCF | Positive | FCF yield > 4% |
| ICR | > 2 | > 4 |
| ROCE | > 15% | Above WACC |
| Promoter Pledge | < 10% | 0% |
| PEG | < 1.5 | < 1 |
These 12 metrics form a systematic filter — not a guarantee. A stock passing all filters can still underperform; one failing a few can still be a great investment with the right qualitative edge. The goal is to stack the odds in your favor before committing capital.
Combine this framework with dollar-cost averaging via SIP for long-term equity exposure, and consider SWP for your distribution strategy. For automated tools to support your investment math, visit our SIP Calculator.
Applying the Framework: A Worked Example
Let's apply these 12 metrics to a hypothetical mid-cap consumer goods company — call it "ABC Foods" — trading at ₹500/share.
Hypothetical data:- Market Cap: ₹5,000 crore
- EPS (TTM): ₹22
- Book Value per Share: ₹180
- Net Income: ₹220 crore
- Shareholders' Equity: ₹1,800 crore
- Revenue (FY2026): ₹2,200 crore
- Revenue (FY2023): ₹1,600 crore
- EBIT: ₹310 crore
- Interest Expense: ₹35 crore
- Operating Cash Flow: ₹280 crore
- Capital Expenditure: ₹60 crore
- Total Debt: ₹700 crore
- EPS Growth Rate (5yr CAGR): 18%
- Annual Dividend: ₹5/share
| Metric | Calculation | Value | Assessment |
|---|---|---|---|
| P/E | 500 ÷ 22 | 22.7× | Moderate — check sector average |
| P/B | 500 ÷ 180 | 2.78× | Fair for a consumer brand |
| ROE | 220 ÷ 1800 × 100 | 12.2% | Below 15% threshold — needs context |
| D/E | 700 ÷ 1800 | 0.39 | Conservative leverage ✓ |
| Revenue CAGR | (2200/1600)^(1/3) – 1 | 11.2% | Decent, but check margins |
| OPM | 310 ÷ 2200 × 100 | 14.1% | Near threshold — stable? |
| FCF | 280 – 60 | ₹220 crore | Positive ✓ |
| ICR | 310 ÷ 35 | 8.9× | Healthy, low debt risk ✓ |
| ROCE | 310 ÷ (1800+700) × 100 | 12.4% | Below ideal but not alarming |
| PEG | 22.7 ÷ 18 | 1.26 | Fairly valued for growth rate |
| Div Yield | 5 ÷ 500 × 100 | 1.0% | Low, growth-oriented |
- Positives: Low debt (D/E 0.39), healthy interest coverage (8.9×), positive FCF, PEG near 1 indicates fair pricing for growth
- Concerns: ROE of 12.2% is below the 15% benchmark, OPM at 14.1% needs checking if it's expanding or contracting over 3 years
- Action: Worthy of deeper qualitative research — check if ROE is temporarily compressed by a recent capex cycle, review OPM trend over 5 years, assess competitive position in the consumer goods category
How to Source These Metrics
Finding accurate data is as important as knowing what to look for.
Free Sources for Indian Stocks
| Source | Best For |
|---|---|
| Screener.in | All financial ratios, 10-year historicals, peer comparison — best free fundamental data tool for Indian stocks |
| Ticker.finology.in | Valuation ratios, promoter holding, DII/FII data |
| NSE / BSE | Official filings, shareholding patterns, annual reports |
| Moneycontrol | Quick lookup of P/E, P/B, dividend yield |
| Annual Report (company website) | The most reliable source for management commentary, segment performance, and detailed financials |
How to Use Screener.in for This Framework
- Go to screener.in and search for the company
- Navigate to the "Financials" tab for income statement, balance sheet, cash flow
- The "Ratios" tab shows P/E, P/B, ROE, ROCE, D/E, OPM history
- The "Shareholding" section shows promoter holding and pledge percentage
- Use the "10-Year" view for any metric to check consistency vs. spotting single-year anomalies
Sector-Specific Benchmarks
The same metric can mean very different things across sectors. Never apply uniform benchmarks blindly.
Banking / NBFCs
| Metric | Typical Range | What Matters More |
|---|---|---|
| P/E | 8-20× | P/B is more meaningful |
| P/B | 0.8-3× | Below 1× can signal distress or value |
| ROE | 12-20% | Trend more important than single year |
| D/E | 5-15× (naturally high) | Don't apply general D/E benchmark |
| NIM (Net Interest Margin) | 2.5-5% | Specific banking profitability metric |
IT Services
| Metric | Typical Range |
|---|---|
| P/E | 20-40× |
| ROE | 20-35% |
| OPM | 18-28% |
| D/E | Near 0 (cash-rich) |
FMCG / Consumer Goods
| Metric | Typical Range |
|---|---|
| P/E | 35-70× (premium valuations) |
| ROE | 30-60% |
| OPM | 15-25% |
| D/E | Low, usually < 0.3 |
Red Flags That Override Good Metrics
Strong fundamentals can be undermined by qualitative red flags. Watch for:
- Promoter selling consistently while publicly claiming the company is doing well — misalignment of interest
- Related party transactions that are large relative to revenues — potential fund diversion
- Auditor changes multiple times in 3-5 years — may signal accounting disputes
- Qualified audit opinion in the annual report — auditors have flagged concerns
- Working capital days deteriorating — receivables growing faster than revenue can indicate channel stuffing or customer payment issues
- Inventory pileup in a consumer company — products not selling despite reported revenue growth
Building Your Own Stock Screener
A custom screener helps you find new ideas systematically. On Screener.in:
Conservative Value Screen (low risk)- ROE > 15%
- D/E < 0.5
- OPM > 15% and growing
- P/E < 20
- Revenue CAGR (3yr) > 10%
- Promoter holding > 40%
- Promoter pledge = 0%
- ROE > 18%
- Revenue CAGR (3yr) > 15%
- OPM > 18% and stable or growing
- PEG < 1.5
- Positive FCF
