Operating margin — Glossary

The longer version

It is calculated by dividing operating income by revenue. If a company earns 100 million dollars in revenue and 25 million in operating income, its operating margin is 25 percent. The figure shows how much profit the company keeps from each dollar of sales after paying the normal costs of running the business.

A higher margin usually means pricing power or efficient operations. A falling margin can mean costs are rising faster than sales, prices are under pressure or the company is investing heavily. Software firms often have higher margins than hardware or retail businesses, so it is most useful when compared with similar companies.

A single quarter can mislead. Seasonal costs, one-time charges and big investments in new products can move the number without changing the long-term picture.

Compare margin across several years and against direct competitors, and read management's explanation when it changes by a noticeable amount.

Where we use “Operating margin”

Tech BusinessAmazon's Stock Drop: The Cash Cost of Growth
Operating income rose 61% and AWS grew 39%, yet trailing free cash flow fell to negative $42.4 billion and the shares dropped after hours. Here is what Amazon's figures can and cannot explain.
Oct 31, 2026Key term
Tech BusinessWhy Jio Platforms Listed 21% Above Its Issue Price
Jio Platforms opened 21.36% above its issue price after selling only 2.93% of the company, while its first results show growth in the low teens. We test scarcity against growth as the source of the premium.
Nov 1, 2026
SaaSWhy ServiceNow Fell 27%: A Valuation Reset, Not an AI Verdict
ServiceNow's 26.95% one-day fall followed a cRPO guide only 1.3 points below consensus, and management quantified timing items that cover more than half of that gap. The filings fit a valuation reset better than AI agents taking revenue.
Oct 30, 2026

The longer version

Where we use “Operating margin”

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