Aecom (ACM) ownership: Top institutional holder: BlackRock, Inc. ($1.34B). Insider activity: Net Seller (3 buys, 17 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 15760364.00 | $1.34B | 2026-03-31 |
| VANGUARD GROUP INC | 12285802.00 | $1.17B | 2025-12-31 |
| PRIMECAP MANAGEMENT CO/CA/ | 8647073.00 | $733.44M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5800366.00 | $491.99M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5506279.00 | $467.04M | 2026-03-31 |
| STATE STREET CORP | 5041460.00 | $427.62M | 2026-03-31 |
| Invesco Ltd. | 3575351.00 | $303.26M | 2026-03-31 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 3481963.00 | $295.34M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-06-16 | |
| Buy | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Buy | null | 2026-05-14 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-03-03 | |
| Sell | null | 2026-03-03 | |
| Sell | null | 2026-03-03 |
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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.