# Chief AI Officers and heads of AI in the Fortune 500

Snapshot month: September 2026.

Who in the Fortune 500 holds a Chief AI Officer title, who holds a head or
vice-president of AI title instead, and which companies hold neither. Every
regex match was read by hand and carries a keep decision, a tier and a reason;
the working files with those decisions are in the repository at
`data/reports/caio_matches_raw.csv` and `data/reports/caio_matches_reviewed.csv`.

Read METHOD.md before using a number. Coverage is 483 of the 500 companies, and
every share in this dataset uses 483, not 500, as its denominator.

## Files

### fortune500_ai_titles.csv
One row per Fortune 500 company, all 500, including the 17 with no person rows.

| Column | Meaning |
|---|---|
| `name` | Company name as it appears on the Fortune 500 list |
| `domain` | Company domain, the join key |
| `rank` | Fortune 500 rank, 2026 list |
| `person_rows` | Person rows the source holds for this domain (coverage and depth) |
| `caio_any` | 1 if any kept row matched the Chief AI Officer regex, assistant rows included |
| `caio_own_title` | 1 if a person's own title is Chief AI Officer |
| `caio_enterprise` | 1 if that title names no unit, region, product or segment |
| `head_of_ai_people` | Head or VP of AI holders after inspection, assistants excluded |
| `head_of_ai_any` | 1 if `head_of_ai_people` is above zero |
| `combined_title_people` | Holders of a combined chief title carrying AI, such as Chief Data and AI Officer |

### caio_companies.csv
The companies with a Chief AI Officer match, with the matched title text, the
tier and the inspection reason. Columns: `company`, `domain`, `rank`,
`person_rows`, `matched_title`, `tier`, `reason`.

`head_of_ai_people` and `combined_title_people` count holders only. An
assistant, chief of staff, deputy or office-of row sets `caio_any` for the
company but is never counted as a person. This file publishes exact counts
below 5, because it is a named roster of all 500 companies; the `<5` rule
applies to `head_of_ai_top.csv`.

### head_of_ai_top.csv
The thirty companies with the most head-of-AI holders after inspection.
Columns: `position`, `company`, `domain`, `rank`, `person_rows`,
`head_of_ai_people`. Counts below 5 print as `<5`.

### combined_titles.csv
The 18 combined chief titles carrying AI, one row per holder, in Fortune rank
order. Columns: `company`, `domain`, `title` (as the source row carries it,
including its capitalisation and any misspelling), `people` (holders of a
combined title at that company).

## Licence

CC BY 4.0. Free to use with attribution to ProfessionLens.