Why Valuation Matters
A great company and a great stock are not the same thing. You can buy shares in an excellent business but still lose money if you paid too much for them. Valuation helps you avoid overpaying.
The Most Important Valuation Ratios
1. Price-to-Earnings Ratio (P/E)
The P/E tells you how much investors pay for every $1 of company earnings. A P/E of 20 means paying $20 per $1 of profit.
- Low P/E — May indicate undervaluation or slow growth expectations
- High P/E — May signal growth expectations or overvaluation
- Always compare P/E to industry peers, not the whole market
2. Price-to-Book Ratio (P/B)
Book value is what's left if a company sold everything and paid off all debts. A P/B below 1.0 can suggest a stock trades below its intrinsic value.
3. Price-to-Sales Ratio (P/S)
Useful for companies that aren't yet profitable. A lower P/S than industry peers may suggest better value.
4. Debt-to-Equity Ratio (D/E)
A health check — high debt can make even cheap-looking stocks risky. Aim for D/E below 1.0 in most sectors.
5. Return on Equity (ROE)
Measures how efficiently a company generates profit. Look for ROE consistently above 10–15%.
A Simple Valuation Checklist
- P/E below industry average
- P/B below 2.0
- Debt/Equity manageable (below 1.0 for most sectors)
- ROE consistently above 10–15%
- Revenue and earnings growing year-over-year
Where to Find These Numbers Instantly
FinWin.ai's Fundamental Ratios & Metrics page shows all key ratios for any stock — updated in real time. You can also use the Stock Screener to filter stocks by P/E, P/B, ROE, and more simultaneously — no spreadsheets needed.
