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Net Profit Margin Screener — Filter Stocks by Bottom-Line Profitability
Large-cap stocks ranked by net profit margin, with every row labeled by profitability tier — from Exceptional compounders above 20% to Thin and Weak operators below 5%. Pair it with the Profit Margin Calculator and Operating Margin Screener to build a complete picture of a company's margin stack.
What Net Margin Reveals
Net profit margin is the last line of defense — the measure of how much revenue survives after every cost, charge, and obligation is settled. Unlike gross margin (which only reflects production economics) or operating margin (which captures operational efficiency), net margin incorporates the full cost of being a business: the debt load, the tax bill, and every one-time item management chose to run through the income statement. A high net margin means the business genuinely earns more than it spends. A thin or negative net margin means it is struggling to convert revenue into real profit.
Net margin trends matter as much as the level. Expanding net margins in a growing business usually signal a combination of operating leverage and improving capital efficiency — revenue growing faster than the full cost base. Contracting net margins can reflect rising interest costs from increased borrowing, a higher tax rate, or genuine deterioration in the core business. Always check whether margin contraction is happening at the gross, operating, or net level before diagnosing the cause.
Reading the Profitability Tiers
The Exceptional tier (>20%) captures businesses that keep more than a fifth of every revenue dollar as profit — typically software platforms, financial exchanges, and asset-light technology companies. Strong (10–20%) covers well-run healthcare, consumer, and industrial companies earning genuinely good returns. Solid (5–10%) is the healthy middle ground: profitable businesses without exceptional pricing power. Thin (0–5%) often reflects distribution businesses, retailers, and highly competitive industries where margins are structurally compressed. Weak (<0%) — negative net margin — means the company is consuming capital: worth investigating whether the loss is temporary or structural.
Sector context is essential. A 4% net margin is standard for a grocery retailer and alarming for a software company. Use the sector filter to compare within peer groups rather than applying a universal benchmark across industries.
Net Margin vs. the Margin Stack
The most insight comes from reading net margin as part of the full margin stack: gross margin → operating margin → net margin. Each step down the stack adds another layer of cost. If gross margin is high but operating margin is thin, the business struggles with overhead costs. If operating margin is solid but net margin is low, the problem is usually interest expense — the company is carrying significant debt. If gross and operating margins are both thin, the core product economics are weak. Use the Gross Margin Screener and Operating Margin Screener alongside this tool to diagnose precisely where profitability is being lost.
Frequently asked questions
How is net profit margin calculated?
Net profit margin = net income ÷ revenue. Net income is the bottom line of the income statement after subtracting cost of goods sold, operating expenses, interest expense, and income taxes from revenue. It is the most comprehensive profitability measure because it accounts for all costs — including financing decisions and tax obligations that operating margin ignores.
Why do some sectors have structurally higher net margins?
Business model economics drive the differences. Software companies have near-zero marginal costs and require little capital to serve additional customers, so they naturally accumulate large margins. Financial exchanges earn a toll on transactions with minimal incremental cost. Retailers resell physical goods with thin markups and high logistics costs, compressing margins throughout. Never compare net margins across very different sectors without accounting for these structural differences.
Can a company have high revenue but low net margin?
Yes, and this is common among retailers, distributors, and commodity businesses. Amazon, for example, generates massive revenue with historically thin retail net margins — but its cloud and advertising businesses carry much higher margins. High revenue with low net margin is not necessarily a problem if the business has structural advantages like scale or switching costs. The key question is whether the margin is stable, improving, or eroding.
What causes net margin to be negative?
Negative net margin means the company is losing money at the bottom line. Common causes: a growth-stage company deliberately spending to acquire customers (acceptable if unit economics are positive); a cyclical business at a trough in the earnings cycle; a leveraged business where interest expense exceeds operating income; or a structurally unprofitable business model. Distinguishing temporary from structural losses requires looking at several years of history and the trend.
How do I use this screener to find investment ideas?
Sort by net margin descending within your target sector to surface the most profitable businesses. Focus on the Exceptional and Strong tier names — especially those you do not immediately recognize, which may represent underfollowed opportunities. Cross-reference with the Operating Margin Screener to see whether strong net margins are backed by genuine operational efficiency or merely a low tax rate. Combine with the ROIC Screener to confirm that high margins are translating to strong returns on capital.
Why might a stock's net margin look different from what I calculate?
Net income has several definitions. This screener uses the trailing twelve months of GAAP net income as reported to Yahoo Finance. Some analysts adjust for one-time items to get 'adjusted' or 'core' net income, which can differ substantially in years with large impairments, restructuring charges, or tax benefits. GAAP net margin is the most conservative and audited version; adjusted figures can make profitability look better or worse depending on management's choices.