King Sasanka – Sri Lankan Writer & Retired Aviation Professional.

Master operating margin analysis with our step-by-step stock screening guide. Learn how to calculate EBIT, identify positive operating leverage, and spot high-moat companies. Analysing profit margins is one of the most powerful tools in fundamental equity research. While top-line revenue growth tells you how fast a company is expanding, margins reveal how efficiently it converts that revenue into actual value for shareholders. Why Comparing Margins is Essential Unmasks Pricing Power: Companies with high or expanding margins possess strong economic moats—whether through brand loyalty, proprietary technology, or scale—allowing them to raise prices without losing customers. Exposes Cost Discipline: Comparing margins across multiple reporting periods reveals whether management can control operational overhead and cost of goods sold during inflationary cycles. Levels the Playing Field: Margins are expressed as percentages, allowing you to directly compare a small-cap niche player against...