AECOM ACM
COM · Common Stock · CUSIP 00766T100 · ISIN US00766T1007
American multinational engineering firm
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($43.7m this quarter). Holder counts are more reliable. Shares outstanding: 131.8m as of 2025-11-14, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $130.42. Options: 9 managers hold calls ($29.2m notional), 5 hold puts ($6.3m).
Trends to Q3 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 371 |
| Q4 2022 | 411 |
| Q1 2023 | 451 |
| Q2 2023 | 452 |
| Q3 2023 | 456 |
| Q4 2023 | 508 |
| Q1 2024 | 517 |
| Q2 2024 | 511 |
| Q3 2024 | 526 |
| Q4 2024 | 568 |
| Q1 2025 | 571 |
| Q2 2025 | 633 |
| Q3 2025 | 640 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 226 | 201 |
| Q1 2024 | 259 | 213 |
| Q2 2024 | 257 | 220 |
| Q3 2024 | 241 | 240 |
| Q4 2024 | 273 | 215 |
| Q1 2025 | 282 | 262 |
| Q2 2025 | 323 | 235 |
| Q3 2025 | 298 | 294 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $52.0m | $26.4m | 0.51 |
| Q1 2025 | $29.1m | $8.6m | 0.30 |
| Q2 2025 | $27.6m | $8.4m | 0.30 |
| Q3 2025 | $29.2m | $6.3m | 0.22 |
Biggest buyers
| FIRST TRUST ADVISORS LP | Added | +2.2m |
| Ninety One UK Ltd | Added | +1.3m |
| JPMORGAN CHASE & CO | Added | +744.0k |
| UBS Group AG | Added | +672.3k |
| Invesco Ltd. | Added | +618.2k |
| PANAGORA ASSET MANAGEMENT INC | Added | +505.4k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | Added | +435.9k |
| HENNESSY ADVISORS INC | New | +333.2k |
| BARCLAYS PLC | Added | +250.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +187.2k |
Biggest sellers
| Amundi | Reduced | -806.9k |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | -684.9k |
| BlackRock, Inc. | Reduced | -593.5k |
| ROYAL BANK OF CANADA | Reduced | -347.9k |
| INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | Sold out | -342.6k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -306.9k |
| AXA S.A. | Sold out | -283.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -280.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | -254.2k |
| GOLDMAN SACHS GROUP INC | Reduced | -219.7k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $11.2m86.1k shares |
| JANE STREET GROUP, LLC | Added | $6.3m48.1k shares |
| CITADEL ADVISORS LLC | Added | $4.1m31.1k shares |
| IMC-Chicago, LLC | Added | $3.3m25.0k shares |
| GROUP ONE TRADING LLC | Added | $1.7m12.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.2m9.0k shares |
| WOLVERINE TRADING, LLC | Reduced | $1.1m8.6k shares |
| Walleye Trading LLC | Reduced | $378.4k2.9k shares |
| UBS Group AG | New | $13.0k100 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.8m29.3k shares |
| CITADEL ADVISORS LLC | Added | $939.4k7.2k shares |
| JANE STREET GROUP, LLC | New | $913.3k7.0k shares |
| Walleye Trading LLC | Added | $326.2k2.5k shares |
| WOLVERINE TRADING, LLC | Added | $285.7k2.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +0.3 pts · filed 2026-02-06 | 10.1% |
| PRIMECAP MANAGEMENT CO/CA/ 13G · institution -1.3 pts · filed 2025-08-14 | 7.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q3 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2023 | 0 | — | 3 | $6.0m | $2.3m |
| Q1 2024 | 0 | — | 1 | $192.9k | — |
| Q2 2024 | 0 | — | 1 | $671.3k | — |
| Q3 2024 | 0 | — | 1 | $3.3m | $3.3m |
| Q4 2024 | 0 | — | 3 | $17.5m | $17.5m |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $6.3m | $6.3m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-08-15 | Rudd Troy CHIEF EXECUTIVE OFFICER, director | Sold plan | $6.3m53.1k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.03% of their portfolio | 14.7m $1.9bn | Reduced -593.5k |
| VANGUARD GROUP INC 0.02% of their portfolio | 12.5m $1.6bn | Reduced -93.1k |
| PRIMECAP MANAGEMENT CO/CA/ 0.89% of their portfolio | 8.9m $1.2bn | Reduced -684.9k |
| STATE STREET CORP 0.02% of their portfolio | 5.1m $666.4m | Added +127.0k |
| Invesco Ltd. 0.10% of their portfolio | 5.0m $649.7m | Added +618.2k |
| FIRST TRUST ADVISORS LP 0.41% of their portfolio | 4.2m $550.1m | Added +2.2m |
| Pictet Asset Management Holding SA 0.47% of their portfolio | 3.8m $492.1m | Added +134.1k |
| Ninety One UK Ltd 0.37% of their portfolio | 2.6m $344.1m | Added +1.3m |
| ALLIANCEBERNSTEIN L.P. 0.11% of their portfolio | 2.6m $340.2m | Reduced -188.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 2.4m $314.6m | Added +53.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.07% of their portfolio | 2.4m $308.7m | Reduced -280.2k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.92% of their portfolio | 2.2m $288.4m | Added +15.4k |
| NORTHERN TRUST CORP 0.04% of their portfolio | 2.1m $276.4m | Added +19.4k |
| FMR LLC 0.01% of their portfolio | 1.8m $237.0m | Reduced -117.3k |
| UBS Group AG 0.04% of their portfolio | 1.6m $210.7m | Added +672.3k |
| BANK OF AMERICA CORP /DE/ 0.02% of their portfolio | 1.6m $207.6m | Reduced -35.6k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 1.5m $190.8m | Added +744.0k |
| MORGAN STANLEY 0.01% of their portfolio | 1.4m $188.9m | Reduced -70.1k |
| Impax Asset Management Group plc 1.07% of their portfolio | 1.4m $182.9m | Reduced -114.8k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 1.3m $171.0m | Added +68.7k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 1.3m $165.4m | Reduced -21.3k |
| Mariner, LLC 0.20% of their portfolio | 1.2m $155.4m | Added +38.7k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 1.2m $151.4m | Reduced -219.7k |
| CI INVESTMENTS INC. 0.55% of their portfolio | 1.2m $151.0m | Reduced -31.5k |
| DEUTSCHE BANK AG\ 0.05% of their portfolio | 1.1m $146.0m | Reduced -41.8k |
| Amundi 0.04% of their portfolio | 1.0m $135.2m | Reduced -806.9k |
| PANAGORA ASSET MANAGEMENT INC 0.54% of their portfolio | 1.0m $134.0m | Added +505.4k |
| Findlay Park Partners LLP 1.38% of their portfolio | 1.0m $131.5m | Reduced -18.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 898.2k $117.2m | Reduced -1.9k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.18% of their portfolio | 880.7k $114.9m | Added +12.0k |
| LORD, ABBETT & CO. LLC 0.34% of their portfolio | 870.3k $113.5m | Added +157.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.09% of their portfolio | 869.1k $113.4m | Reduced -254.2k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.38% of their portfolio | 853.1k $111.3m | Reduced -127.2k |
| NORDEA INVESTMENT MANAGEMENT AB 0.09% of their portfolio | 792.4k $103.3m | Added +75.1k |
| DekaBank Deutsche Girozentrale 0.16% of their portfolio | 722.4k $93.4m | Unchanged |
| Qube Research & Technologies Ltd 0.12% of their portfolio | 672.2k $87.7m | Added +101.3k |
| BARCLAYS PLC 0.02% of their portfolio | 490.8k $64.0m | Added +250.0k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.06% of their portfolio | 487.2k $63.6m | Added +435.9k |
| Sandhill Capital Partners LLC 4.43% of their portfolio | 486.8k $63.5m | Reduced -3.2k |
| CITIGROUP INC 0.04% of their portfolio | 480.6k $62.7m | Reduced -162.5k |
| FIL Ltd 0.05% of their portfolio | 478.2k $62.4m | Reduced -60.1k |
| Pacer Advisors, Inc. 0.15% of their portfolio | 450.8k $58.8m | Reduced -86.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.08% of their portfolio | 450.0k $58.7m | Added +187.2k |
| Legal & General Group Plc 0.01% of their portfolio | 417.3k $54.4m | Added +12.3k |
| HSBC HOLDINGS PLC 0.03% of their portfolio | 391.7k $51.1m | Added +51.1k |
| Swiss National Bank 0.03% of their portfolio | 381.4k $49.8m | Reduced -20.3k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 365.7k $47.7m | Reduced -33.9k |
| Nuveen, LLC 0.01% of their portfolio | 362.1k $47.2m | Reduced -158.8k |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 360.5k $47.0m | Reduced -7.0k |
| Robeco Schweiz AG 1.03% of their portfolio | 350.9k $45.8m | Reduced -28.6k |
| HENNESSY ADVISORS INC 1.50% of their portfolio | 333.2k $43.5m | New |
| Retirement Systems of Alabama 0.14% of their portfolio | 312.0k $40.7m | Reduced -1.6k |
| FLPUTNAM INVESTMENT MANAGEMENT CO 0.59% of their portfolio | 304.9k $39.8m | Added +2.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.03% of their portfolio | 304.7k $39.8m | Reduced -95.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 294.1k $38.4m | Reduced -5.9k |
| AXA Investment Managers S.A. 0.10% of their portfolio | 281.3k $36.7m | First filing |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 276.7k $36.1m | Reduced -1.8k |
| California Public Employees Retirement System 0.02% of their portfolio | 274.8k $35.8m | Added +19.7k |
| Ninety One North America, Inc. 0.80% of their portfolio | 268.0k $35.0m | Added +136.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.11% of their portfolio | 262.5k $34.3m | Reduced -115.5k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.04% of their portfolio | 252.4k $32.9m | Added +2.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 246.2k $32.1m | Reduced -7.2k |
| Vest Financial, LLC 0.41% of their portfolio | 242.8k $31.7m | Added +110.0k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 238.1k $31.1m | Reduced -347.9k |
| TWO SIGMA ADVISERS, LP 0.06% of their portfolio | 237.3k $31.0m | Reduced -152.4k |
| Lombard Odier Asset Management (Europe) Ltd 1.57% of their portfolio | 235.3k $30.7m | Added +49.3k |
| CANADA LIFE ASSURANCE Co 0.04% of their portfolio | 196.6k $25.5m | Added +25.9k |
| Caisse de depot et placement du Quebec 0.05% of their portfolio | 194.4k $25.4m | Added +40.7k |
| KBC Group NV 0.06% of their portfolio | 188.3k $24.6m | Reduced -35.1k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.10% of their portfolio | 186.7k $24.4m | Added +8.6k |
| Ninety One SA (Pty) Ltd 0.82% of their portfolio | 182.7k $23.8m | Added +122.7k |
| MACQUARIE GROUP LTD 0.03% of their portfolio | 182.6k $23.8m | Reduced -5.3k |
| Swiss Life Asset Management Ltd 0.12% of their portfolio | 178.0k $23.2m | Added +16.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 175.5k $22.9m | Added +26.4k |
| Verition Fund Management LLC 0.13% of their portfolio | 173.1k $22.6m | Reduced -73.5k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 172.2k $22.4m | Reduced -199.1k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 168.8k $22.0m | Added +59.6k |
| DANSKE BANK A/S 0.05% of their portfolio | 168.4k $22.0m | Reduced -81.5k |
| Asset Management One Co., Ltd. 0.06% of their portfolio | 167.7k $21.9m | Added +50.1k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 163.1k $21.2m | Added +11.6k |
| LPL Financial LLC 0.01% of their portfolio | 159.9k $20.9m | Reduced -11.2k |
| Rathbones Group PLC 0.08% of their portfolio | 157.9k $20.6m | Added +8.2k |
| STRS OHIO 0.07% of their portfolio | 154.5k $20.2m | Reduced -116.9k |
| Allianz Asset Management GmbH 0.02% of their portfolio | 150.8k $19.7m | Added +77.3k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 148.5k $19.4m | Added +9.8k |
| PAYDEN & RYGEL 1.63% of their portfolio | 148.4k $19.4m | Reduced -2.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 145.8k $19.0m | Added +4.5k |
| Vontobel Holding Ltd. 0.05% of their portfolio | 133.2k $17.4m | Added +5.9k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 132.7k $17.3m | Reduced -1.1k |
| Gotham Asset Management, LLC 0.08% of their portfolio | 132.4k $17.3m | Added +60.1k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.03% of their portfolio | 131.3k $17.1m | Added +2.3k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.01% of their portfolio | 129.4k $16.9m | Added +13.1k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.13% of their portfolio | 128.1k $16.7m | Unchanged |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.03% of their portfolio | 126.9k $16.6m | Reduced -18.9k |
| BI Asset Management Fondsmaeglerselskab A/S 0.13% of their portfolio | 125.7k $14.6m | Reduced -186.9k |
| Stanley Capital Management, LLC 2.50% of their portfolio | 116.4k $15.2m | Unchanged |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 114.7k $15.0m | Reduced -54.9k |
| Boston Partners 0.02% of their portfolio | 114.1k $14.9m | Reduced -1.5k |
| Robeco Institutional Asset Management B.V. 0.02% of their portfolio | 113.2k $14.8m | Added +5.6k |
| Thematics Asset Management 0.66% of their portfolio | 112.1k $14.6m | Reduced -6.0k |