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ACM

Aecom
$67.74 +0.88 (+1.32%) At close · Jul 2
Market Cap
$8.71B
Shares
128,522,920

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 617
Total Value: $9,163,720,513
Total Shares: 108,046,635
Showing 1–100 of 629 holdings by value · page 1 of 7

Institutional Ownership Trend

26 quarters

Superinvestors Holding ACM

All superinvestors →
Ray Dalio $15,535,716 Joel Greenblatt $11,431,106

Holder Concentration

Across 618 13F filers
Top Holder
14.6%
Jun 2023 → Mar 2026 · range 12.7% – 15.2%
of institutional value
Top 5
35.9%
Jun 2023 → Mar 2026 · range 35.9% – 46.7%
of institutional value
Top 10
48.9%
Jun 2023 → Mar 2026 · range 48.9% – 61.2%
of institutional value
HHI
408
Jun 2023 → Mar 2026 · range 408 – 589
Broadly held
Showing 100 of 629
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $1,336,794,064 14.59% 15,760,364
Mega PRIMECAP MANAGEMENT CO/CA/ $733,444,731 8.00% 8,647,073
Mega VANGUARD CAPITAL MANAGEMENT LLC $491,987,044 5.37% 5,800,366
Mega STATE STREET CORP $427,616,637 4.67% 5,041,460
Mega Invesco Ltd. $303,261,264 3.31% 3,575,351
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $295,340,096 3.22% 3,481,963
Mega FIRST TRUST ADVISORS LP $256,703,149 2.80% 3,026,446
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $241,967,879 2.64% 2,852,722
Mega GEODE CAPITAL MANAGEMENT, LLC $209,458,663 2.29% 2,469,449
Large Pictet Asset Management Holding SA $180,527,664 1.97% 2,128,362
Mega FMR LLC $178,807,343 1.95% 2,108,080
Mega NORTHERN TRUST CORP Bank $166,650,939 1.82% 1,964,760
Mega MORGAN STANLEY $142,452,553 1.55% 1,679,469
Mega UBS Group AG $120,919,898 1.32% 1,425,606
Mega DIMENSIONAL FUND ADVISORS LP $117,690,716 1.28% 1,387,535
Large Impax Asset Management Group plc $117,277,814 1.28% 1,382,667
Mega Bank of New York Mellon Corp Bank $110,136,387 1.20% 1,298,472
Mega Amundi $103,989,826 1.13% 1,226,006
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $103,594,822 1.13% 1,221,349
Mega D. E. Shaw & Co., Inc. $90,098,178 0.98% 1,062,228
Mega AQR CAPITAL MANAGEMENT LLC $90,013,269 0.98% 1,061,227
Large LORD, ABBETT & CO. LLC $85,249,274 0.93% 1,005,061
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $82,192,699 0.90% 969,025
Large Ninety One UK Ltd $81,627,629 0.89% 962,363
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $78,785,396 0.86% 928,854
Mega VANGUARD FIDUCIARY TRUST CO Bank $68,083,232 0.74% 802,679
Mega GOLDMAN SACHS GROUP INC $67,657,860 0.74% 797,664
Mega MILLENNIUM MANAGEMENT LLC $66,501,254 0.73% 784,028
Mega AMERIPRISE FINANCIAL INC $62,108,085 0.68% 732,234
Large DekaBank Deutsche Girozentrale Bank $61,274,731 0.67% 722,409
Mega CITADEL ADVISORS LLC $60,617,206 0.66% 714,657
Mega JPMORGAN CHASE & CO $60,098,612 0.66% 708,543
Large PFA Pension, Forsikringsaktieselskab Pension $59,148,972 0.65% 697,347
Mega DEUTSCHE BANK AG\ Bank $58,213,743 0.64% 686,321
Mega HSBC HOLDINGS PLC $57,563,005 0.63% 678,649
Large RENAISSANCE TECHNOLOGIES LLC $56,174,335 0.61% 662,277
Large LAZARD ASSET MANAGEMENT LLC $54,686,337 0.60% 644,734
Mega BANK OF AMERICA CORP /DE/ Bank $52,638,356 0.57% 620,589
Mega BARCLAYS PLC $52,055,135 0.57% 613,713
Mega NORDEA INVESTMENT MANAGEMENT AB $50,371,373 0.55% 593,862
Mid Sandhill Capital Partners LLC $49,659,056 0.54% 585,464
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $47,889,202 0.52% 564,598
Mega ALLIANCEBERNSTEIN L.P. $47,348,644 0.52% 558,225
Mega Nuveen, LLC $43,117,143 0.47% 508,337
Mega TWO SIGMA INVESTMENTS, LP $42,969,048 0.47% 506,591
Large Qube Research & Technologies Ltd $37,479,667 0.41% 441,873
Large Allianz Asset Management GmbH $35,224,558 0.38% 415,286
Mega Legal & General Group Plc $34,380,344 0.38% 405,333
Mega Swiss National Bank Bank $32,815,161 0.36% 386,880
Mid Robeco Schweiz AG $31,547,696 0.34% 371,937
Large Russell Investments Group, Ltd. $31,263,714 0.34% 368,589
Mega RHUMBLINE ADVISERS $29,792,261 0.33% 351,241
Large PANAGORA ASSET MANAGEMENT INC $29,209,633 0.32% 344,372
Large Verition Fund Management LLC $28,804,872 0.31% 339,600
Large Retirement Systems of Alabama Pension $28,780,104 0.31% 339,308
Mega FIL Ltd $26,903,886 0.29% 317,188
Large PRUDENTIAL FINANCIAL INC $26,538,566 0.29% 312,881
Large CI INVESTMENTS INC. $26,376,305 0.29% 310,968
Mid FLPUTNAM INVESTMENT MANAGEMENT CO $25,618,863 0.28% 302,038
Large SG Americas Securities, LLC Broker-Dealer $25,064,988 0.27% 295,508
Mega PRINCIPAL FINANCIAL GROUP INC $24,469,466 0.27% 288,487
Mid Vest Financial, LLC $24,448,431 0.27% 288,239
Mid HENNESSY ADVISORS INC $24,233,074 0.26% 285,700
Mid Vinva Investment Management Ltd $23,981,243 0.26% 282,731
Mega Sumitomo Mitsui Trust Group, Inc. $23,237,032 0.25% 273,957
Large Balyasny Asset Management L.P. $22,698,679 0.25% 267,610
Mid INTECH INVESTMENT MANAGEMENT LLC $21,963,460 0.24% 258,942
Mega California Public Employees Retirement System Pension $21,747,678 0.24% 256,398
Large Robeco Institutional Asset Management B.V. $21,624,943 0.24% 254,951
Mega FRANKLIN RESOURCES INC $20,765,119 0.23% 244,814
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $20,441,704 0.22% 241,001
Large Quantinno Capital Management LP $20,436,700 0.22% 240,942
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $20,236,355 0.22% 238,580
Large TUDOR INVESTMENT CORP ET AL $19,684,940 0.21% 232,079
Large DANSKE BANK A/S Bank $19,153,967 0.21% 225,819
Mega PRICE T ROWE ASSOCIATES INC /MD/ $18,460,309 0.20% 217,641
Large Mariner, LLC $17,444,929 0.19% 205,670
Mega BNP PARIBAS ARBITRAGE, SA $17,105,564 0.19% 201,669
Large Swiss Life Asset Management Ltd $16,369,156 0.18% 192,987
Large Bridgewater Associates, LP $15,535,716 0.17% 183,161
Large Man Group plc $15,488,300 0.17% 182,602
Large WORLDQUANT MILLENNIUM ADVISORS LLC $15,253,350 0.17% 179,832
Large BANK OF NOVA SCOTIA Bank $13,475,523 0.15% 158,872
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $13,270,428 0.14% 156,454
Large Rathbones Group PLC $13,138,278 0.14% 154,896
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $12,556,751 0.14% 148,040
Mid Lombard Odier Asset Management (Europe) Ltd $12,240,374 0.13% 144,310
Mega WELLS FARGO & COMPANY/MN $12,000,501 0.13% 141,482
Mega Mitsubishi UFJ Asset Management Co., Ltd. $11,907,455 0.13% 140,385
Mid Ninety One North America, Inc. $11,621,866 0.13% 137,018
Large Gotham Asset Management, LLC $11,431,106 0.12% 134,769
Mid Aquatic Capital Management LLC $11,298,193 0.12% 133,202
Large KLP KAPITALFORVALTNING AS $11,085,974 0.12% 130,700
Mega CITIGROUP INC $10,995,300 0.12% 129,631
Large TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Pension $10,865,526 0.12% 128,101
Large ACADIAN ASSET MANAGEMENT LLC $10,859,589 0.12% 128,031
Large Squarepoint Ops LLC $10,528,197 0.11% 124,124
Mid MIROVA $10,486,720 0.11% 123,635
Mid Guinness Asset Management LTD $10,398,423 0.11% 122,594
Large KBC Group NV $10,310,972 0.11% 121,563
Key facts CIK 868857 CUSIP 00766T100 13F (30d) 11 filings 9 filers Visit website Investor relations

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