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Which companies are built to last?

Durable businesses keep their margins when times are hard, turn profits into cash year after year, and carry little debt. They tend to fall less in bad markets, which makes them the foundation of a portfolio rather than its excitement.

Updated Jun 25, 2026

3
% of S&P 500

7 pass every test

7 S&P 500 companies pass all three tests: steady margins, reliable cash flow and a strong balance sheet. Financials has the most, with 5.

245 companies with five years of historyMeasured within each sectorPassing means 60 or more on every test

The 60 most durable companies

Each test is a score from 0 to 100 against the company’s own sector. Select a row for its chart. Select a column to sort.

CompanyDurabilitySteady marginsReliable cashBalance sheetOperating marginSectorFive years

How to read this page

How it’s measured. Each company is scored within its own sector, so a utility is compared with utilities and a software company with software companies.

Sources. Company financial statements from Financial Modeling Prep; scores from Stox.

Durability combines three tests, each scored against the company’s sector: how stable its margins have been, how consistently it turns profit into free cash, and how strong its balance sheet is.

In our research durability is a risk reducer rather than a return signal: durable companies have fallen less in bad markets without reliably beating the market.

This page is information, not investment advice. About our data and methods ›

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