Aecom (ACM) ownership: PRIMECAP Management Company 8% · institutions 91% (13F 2026-03-31). Insider activity, 90 days: Insiders bought (0 sales, 1 open-market buys). 1 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 15760364.00 | $1.34B | 12.3% | 2026-03-31 |
| Vanguard | 12284113.00 | $1.04B | 9.6% | 2026-03-31 |
| Primecap Management Co | 8647073.00 | $733.44M | 6.7% | 2026-03-31 |
| State Street | 5041460.00 | $427.62M | 3.9% | 2026-03-31 |
| UBS | 4907569.00 | $416.26M | 3.8% | 2026-03-31 |
| Invesco | 3575351.00 | $303.26M | 2.8% | 2026-03-31 |
| First Trust Advisors LP | 3026446.00 | $256.70M | 2.4% | 2026-03-31 |
| Barrow Hanley Mewhinney & Strauss LLC | 2852722.00 | $241.97M | 2.2% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-06-16 | |
| Buy | null | 2026-05-14 | |
| Buy | null | 2026-05-14 | |
| Sell | 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.