The 80/20 of fundamental analysis.

I read four books on fundamental analysis. They cover 47 different ratios. Quick ratio, current ratio, debt service coverage, working capital turnover, days payable outstanding... Most retail investors give up trying to learn them all. That's fine. You don't need them all. The 80/20 of fundamental analysis is these 5 metrics: 1. **ROE >15%** — sign of a quality business 2. **Debt-to-Equity <0.5** — protects against bankruptcy 3. **P/E vs Industry Average** — relative valuation 4. **5-Year Revenue Growth >10%** — proves the business is growing 5. **Promoter Pledge <10%** — promoters not under stress 5 numbers. That's it. If a stock passes all 5, it's worth deeper research. If it fails 2+, skip it. This is what value investors call "the eliminator filter." It eliminates 80% of stocks in 30 seconds. The 20% that remain deserve your time. Don't perfect this. Just use it consistently. Most investors fail not from ignorance but from inconsistency.