Automatic Data Processing, Inc. (ADP) Shareholders & Insider Trades
Automatic Data Processing shareholders at a glance
The largest holder of Automatic Data Processing stock is Vanguard Capital Management LLC, with 26.1 million shares (6.57% of the company), worth about $7.47 billion as of September 25, 2026. The 10 largest holders together own 37.5%.
In Q2 2026, 2,378 institutional holdings reports listed shares worth $81.20 billion.
Insiders reported 74 transactions in the last two years: 27 sales worth $45.97 million and 1 purchase. The newest one on file is from May 8, 2026 (Michaud Brian L., Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 8, 2026.
Automatic Data Processing, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Automatic Data Processing shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 26.1 million | 6.57% | $7.5B |
| BlackRock Advisors LLC | 25.8 million | 6.48% | $7.4B |
| State Street Corporation | 20.4 million | 5.13% | $5.8B |
| Invesco Advisers, Inc. | 13.6 million | 3.41% | $3.9B |
| Charles Schwab Investment Management, Inc. | 12.7 million | 3.20% | $3.6B |
| Geode Capital Management LLC | 12.0 million | 3.01% | $3.4B |
| Vanguard Portfolio Management LLC | 10.5 million | 2.65% | $3.0B |
| Wellington Trust Co., NA | 10.0 million | 2.52% | $2.9B |
| BlackRock Life Ltd. | 9.6 million | 2.43% | $2.8B |
| Wells Fargo Bank NA | 8.5 million | 2.13% | $2.4B |
As of September 25, 2026.
Automatic Data Processing institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 2,378 | – | $81.2B |
| Q1 2026 | 2,368 | 350.0 million | $71.3B |
| Q4 2025 | 2,497 | 342.0 million | $87.9B |
| Q3 2025 | 2,498 | 337.0 million | $99.0B |
| Q2 2025 | 2,569 | 335.0 million | $103.0B |
| Q1 2025 | 2,563 | 331.0 million | $101.0B |
| Q4 2024 | 2,527 | 333.0 million | $97.9B |
| Q3 2024 | 2,339 | 334.0 million | $92.6B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Automatic Data Processing insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Michaud Brian L. | May 8, 2026 | Officer | Sale at price 212.13 per share. | $179,886 |
| Swan Robert Holmes | May 7, 2026 | Director | Purchase at price 206.05 per share. | $745,695 |
| D'Ambrosio Christopher | Apr 14, 2026 | Officer | Sale at price 195.74 per share. | $106,287 |
| D'Ambrosio Christopher | Mar 16, 2026 | Officer | Sale at price 208.45 per share. | $113,188 |
| D'Ambrosio Christopher | Feb 17, 2026 | Officer | Sale at price 212.43 per share. | $115,349 |
| Michaud Brian L. | Feb 6, 2026 | Officer | Sale at price 234.18 per share. | $234,180 |
| Foskett David | Feb 5, 2026 | Officer | Sale at price 237.00 per share. | $63,042 |
| D'Ambrosio Christopher | Jan 13, 2026 | Officer | Sale at price 262.29 per share. | $142,423 |
| Kwon David | Jan 12, 2026 | Officer | Sale at price 264.80 per share. | $213,429 |
| Kwon David | Jan 6, 2026 | Officer | Conversion of Exercise of derivative security at price 138.53 per share. | $157,509 |
| Kwon David | Jan 6, 2026 | Officer | Sale at price 260.00 per share. | $234,000 |
| Black Maria | Jan 5, 2026 | Chief Executive Officer | Sale at price 253.32 - 258.77 per share. | $183,880 |
Newest 12 of 74 insider transactions in the last two years.
Questions and answers
Who owns the most Automatic Data Processing stock?
Vanguard Capital Management LLC, with 6.57% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (6.48%) and State Street Corporation (5.13%).
How many institutions own Automatic Data Processing stock?
2,378 institutional holdings reports listed Automatic Data Processing shares in Q2 2026 worth $81.20 billion.
Are Automatic Data Processing insiders buying or selling the stock?
In the last two years insiders reported 27 sales and 1 purchase (74 transactions in all); the newest on file is from May 8, 2026.
