Operating profit margin

The share of revenue left as profit from the business itself, before interest and tax.

Operating margin = operating income ÷ revenue

Operating margin takes revenue and subtracts every operating cost: what was sold, research, sales, marketing and administration. What is left is what the business earns before financing and tax.

It is the cleanest measure of how profitable the business model is, and it is comparable between companies with different debt and tax. Watch the trend: when part of the costs are fixed, margins widen as revenue grows.

Operating margin across the S&P 500 today

420 companies with a meaningful value, as of Oct 11, 2026.

Median18.0%
Lower quartile10.4%
Upper quartile26.9%

Median operating margin by sector

S&P 500 companies only. Sectors differ a lot, so compare a company with its own sector first.

SectorMedianCompanies
Communication Services25.8%20
Financial Services23.4%40
Energy22.9%15
Utilities22.8%29
Technology22.8%82
Basic Materials20.6%10
Real Estate20.1%19
Industrials17.5%69
Healthcare16.9%51
Consumer Cyclical14.9%43
Consumer Defensive13.4%27

Questions

What is Operating margin?

The share of revenue left as profit from the business itself, before interest and tax.

How is Operating margin calculated?

Operating margin = operating income ÷ revenue.

What is a normal operating margin?

Across 420 S&P 500 companies, the median is 18.0%; the middle half sits between 10.4% and 26.9%. It varies a lot by sector.

Live figures from the latest prices and SEC filings. Information only, not investment advice. Updated October 9, 2026.