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ACM in the 13F filings

Aecom Technology Corp · CUSIP 00766T100

Sector · Business and payment services
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
34
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 11 listed it in both
Shares listed
20,271,593
combined, among listed positions
Reported value
$1.4bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 16 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +6,315,486.

Managers listing ACM in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

34 of 34 holders

ActionFiling
Fidelity (FMR LLC)3,758,192$262munder 0.1%Added+1,650,11213 Aug 2026 (the filing on sec.gov)
Invesco Ltd3,191,873$223munder 0.1%Trimmed-383,47814 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP2,096,935$146m0.06%Added+1,858,35513 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC1,795,383$124munder 0.1%Added+734,15614 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,711,157$119m0.06%Added+648,92914 Aug 2026 (the filing on sec.gov)
Millennium Management LLC1,321,296$92munder 0.1%Added+537,26814 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP875,607$61munder 0.1%Added+369,01614 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC746,877$52m0.07%Added+84,60013 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC677,771$47munder 0.1%Trimmed-36,8862 Sep 2026 (the filing on sec.gov)
AllianceBernstein LP556,862$47munder 0.1%Trimmed-1,36314 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp669,882$47m0.07%Added+437,80314 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC534,601$37munder 0.1%Added+531,30314 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC497,601$35munder 0.1%Added+373,47714 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC349,533$24m0.12%Added+9,93314 Aug 2026 (the filing on sec.gov)
Voloridge Investment Management LLC306,336$21m0.09%Trimmed-258,26214 Aug 2026 (the filing on sec.gov)
PDT Partners LLC172,729$12m0.63%Newnew14 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP163,405$11munder 0.1%Trimmed-19,75614 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP146,128$10munder 0.1%Added+104,31314 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc132,846$9.3munder 0.1%Trimmed-84,79514 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP107,951$7.5munder 0.1%Added+41,60214 Aug 2026 (the filing on sec.gov)
Caxton Associates LLP93,841$6.5m0.12%Added+14,61114 Aug 2026 (the filing on sec.gov)
Freestone Grove Partners LP76,451$5.3munder 0.1%Added+50,99814 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP61,157$4.3munder 0.1%Added+34,19414 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd56,600$4.0munder 0.1%Added+49,41214 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC50,285$3.5munder 0.1%Added+18,06814 Aug 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
13 in Q3 2024 to 13 in Q2 2026

Tracked managers listing it, at least.

0510152014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ACM by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20134$490mn.a.n.a.
Q3 20133$517mn.a.n.a.
Q4 20135$505mn.a.n.a.
Q1 20144$577mn.a.n.a.
Q2 20147$612mn.a.n.a.
Q3 201410$1.1bnn.a.n.a.
Q4 20146$1.2bnn.a.n.a.
Q1 20154$1.3bnn.a.n.a.
Q2 20155$1.4bnn.a.n.a.
Q3 20155$910mn.a.n.a.
Q4 20155$980mn.a.n.a.
Q1 20164$989mn.a.n.a.
Q2 20165$954mn.a.n.a.
Q3 20166$905mn.a.n.a.
Q4 201610$1.2bnn.a.n.a.
Q1 20175$1.1bnn.a.n.a.
Q2 20176$935mn.a.n.a.
Q3 20175$961mn.a.n.a.
Q4 20176$1.1bnn.a.n.a.
Q1 20184$1.1bnn.a.n.a.
Q2 20185$984mn.a.n.a.
Q3 20182$841mn.a.n.a.
Q4 20184$782mn.a.n.a.
Q1 20196$713mn.a.n.a.
Q2 20195$1.0bnn.a.n.a.
Q3 20198$1.2bnn.a.n.a.
Q4 20199$1.4bnn.a.n.a.
Q1 202011$1.2bnn.a.n.a.
Q2 202012$1.5bnn.a.n.a.
Q3 202012$1.5bnn.a.n.a.
Q4 202012$1.5bnn.a.n.a.
Q1 20218$1.7bnn.a.n.a.
Q2 20217$1.5bnn.a.n.a.
Q3 20217$1.4bnn.a.n.a.
Q4 20216$1.6bnn.a.n.a.
Q1 20225$1.8bnn.a.n.a.
Q2 20226$1.2bnn.a.n.a.
Q3 20226$1.3bnn.a.n.a.
Q4 20229$1.5bnn.a.n.a.
Q1 20239$1.1bnn.a.n.a.
Q2 20237$883mn.a.n.a.
Q3 20236$739mn.a.n.a.
Q4 202310$797m73
Q1 202414$894m113
Q2 202412$679m94
Q3 202413$1.0bn86
Q4 20249$701m53
Q1 202511$511m74
Q2 202511$986m56
Q3 202510$1.2bn46
Q4 202511$759m2311
Q1 202612$279m2510
Q2 202613$549m2116

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ACM and V →ACM and MA →ACM and MCO →Choose a stock to compare with ACM →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ACM, latest filings →Back to the 13F Explorer →