Each company in the database is assigned to an industry segment based on here they derive the majority of their revenue from. Those segments are then rolled up to industry segments.
The table below shows the number of companies in each industry alongside the largest provider in each.
| Financial Services | 877 | Berkshire Hathaway |
| Industrials (non Auto) | 496 | Samsung Electronics Co |
| Basic Materials | 441 | Glencore International AG |
| Retail | 419 | Wal-Mart Stores, Inc. |
| Consumer Goods | 368 | Procter & Gamble |
| Food | 303 | Cargill |
| Business Services | 268 | Google, Inc. (Alphabet) |
| Technology | 262 | Apple, Inc. |
| Oil | 257 | Saudi Aramco |
| Health Care | 255 | McKesson Corporation |
| Construction | 240 | China State Construction Engineering |
| Transport | 225 | Japan Post Holdings |
| Utility | 191 | State Grid |
| Autos & Trucks | 144 | Toyota Motor Corporation |
| Telecom | 131 | AT&T, Inc. |
| Publishing | 123 | Twenty-First Century Fox, Inc. |