Automatic Data Processing, Inc. (ADP) ownership: Top institutional holder: VANGUARD GROUP INC ($10.70B). Insider activity: Net Seller (3 buys, 17 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 41579918.00 | $10.70B | 2025-12-31 |
| BlackRock, Inc. | 35499016.00 | $7.21B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 26150698.00 | $5.31B | 2026-03-31 |
| STATE STREET CORP | 19326803.00 | $3.96B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 11993206.00 | $2.44B | 2026-03-31 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 11561745.00 | $2.35B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 11052077.00 | $2.25B | 2026-03-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 10104386.00 | $2.05B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Buy | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-04-14 | |
| Sell | null | 2026-04-14 | |
| Sell | null | 2026-03-16 | |
| Sell | null | 2026-03-16 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.