Margins — the Quality Signature

The margin ladder

Gross margin (price − direct cost): pricing power and product uniqueness. Operating margin (after opex): management efficiency. Net margin (after everything, incl. tax): what shareholders actually keep. Compare each ONLY within an industry — supermarkets run 2–4% net margins on volume; software runs 20–30% on lock-in. A 25% margin is terrible for software and miraculous for retail.

The trend beats the level

A stable 10% margin = a predictable business. A RISING margin = pricing power improving or scale kicking in (the compounding dream). A FALLING margin = competition eating the moat, cost inflation passing through slower than costs rise. Margin direction is the earliest fundamental warning — it moves before revenue does.

Margins and moats

Durable above-industry margins ARE the moat made visible (brand pricing, switching costs, network effects, scale). When a "moaty" company's margins compress for 4+ quarters, either the moat cracked or management is lying about it — investigate before believing the recovery story.

Sources

• Profit MarginInvestopedia
• Investment ValuationAswath Damodaran