An analysis of profit margins across S&P 500 industries.
Methodology & Data Sources
This study analyzes the profit margins of S&P 500 companies, grouped by their respective GICS industries, to determine the most and least profitable sectors of the economy in 2026.
- Data Source: Financial data is aggregated from standard SEC filings (10-K, 10-Q) using the Yahoo Finance API.
- Margin Definitions:
- Operating Margin: Operating Income divided by Total Revenue. Represents profit from core business operations before interest and taxes.
- Net Margin: Net Income divided by Total Revenue. The final "bottom line" profit percentage.
- Gross Margin: Gross Profit divided by Total Revenue. Revenue remaining after deducting the direct costs of goods sold (COGS).
- Averages: Industry averages are calculated as an equally-weighted average of the constituent S&P 500 companies within that industry.
- Null Over Fake Data: Where financial models (e.g., banks, REITs) do not utilize standard gross margins, or where 5-year growth data is unavailable, values are explicitly reported as "N/A" rather than using placeholder values.