Ticker · CUSIP 00766T100

ACM

AECOM

Industrials·Engineering & Construction

···Share

Holders (tracked)

Combined shares

5,026,118

Combined value

$479.14M

Last close

$86.61

Quarter

2025Q4

Price is -9.1% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$86.61-6.71 (-7.19%)H $133.44 · L $82.91 · Avg Vol 1.2M

Tracked holders · last 8 quarters

+6 vs previous quarter over the last 8.

SEC event timeline

26 events

Jeremy Grantham (GMO) opened position2026-02-17
+16,203 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+430,049 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−1,460 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+357,110 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+18,638 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+94,016 shares · 2025Q4
Position
Wellington Management added2026-02-17
+1,446 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+218,400 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+345,012 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+4,300 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) trimmed2026-02-13
−15,400 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+187,600 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+2,155,657 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) added2026-02-09
+179 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−306,897 shares · 2025Q3
Position
Steve Cohen (Point72) exited2025-11-14
−22,829 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+59,552 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−11,598 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+26,398 shares · 2025Q3
Position
Wellington Management added2025-11-14
+1,546 shares · 2025Q3
Position
AQR Capital Management trimmed2025-11-14
−199,140 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) trimmed2025-11-13
−46,730 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+187,250 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−1,779,899 shares · 2025Q3
Position
Ken Fisher (Fisher Asset Mgmt) opened position2025-11-12
+2,135 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−1,107 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for ACM →

Follow-the-investor returns

If you'd copied each holder of ACM…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Jeremy Grantham (GMO)	2016Q1	$30.79	+181.3%	$1.4M
Ken Fisher (Fisher Asset Mgmt)	2021Q1	$70.34	+23.1%	$200K
Wellington Management	2016Q1	$82.57	+4.9%	$1.7M
T. Rowe Price	2016Q1	$82.89	+4.5%	$16.8M
Paul Tudor Jones (Tudor Investment)	2017Q1	$95.17	-9.0%	$8.1M
Paul Tudor Jones (Tudor Investment)	2017Q1	$95.17	-9.0%	$8.1M
Paul Tudor Jones (Tudor Investment)	2017Q1	$95.17	-9.0%	$8.1M
D.E. Shaw & Co.	2016Q2	$95.30	-9.1%	$31.1M
AQR Capital Management	2016Q1	$95.75	-9.5%	$14.8M
Ken Griffin (Citadel Advisors)	2016Q1	$96.07	-9.8%	$2.7M
Ken Griffin (Citadel Advisors)	2016Q1	$96.07	-9.8%	$2.7M
Ken Griffin (Citadel Advisors)	2016Q1	$96.07	-9.8%	$2.7M
Izzy Englander (Millennium Mgmt)	2016Q2	$96.33	-10.1%	$32.8M
Steve Cohen (Point72)	2017Q2	$98.51	-12.1%	$372K
Two Sigma Investments	2016Q4	$99.65	-13.1%	$33.5M
Renaissance Technologies	2016Q4	$105.98	-18.3%	$55.2M
Ray Dalio (Bridgewater Associates)	2019Q4	$110.13	-21.4%	$3.7M
Norges Bank (Norway SWF)	2016Q1	$21535.84	-99.6%	$186.7M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions4

Norges Bank (Norway SWF)
+2,155,657
$205.5M
Paul Tudor Jones (Tudor Investment)
+94,016
$9.0M
Jeremy Grantham (GMO)
+16,203
$1.5M
Steve Cohen (Point72)
+4,300
$410K

Added to8

Ken Griffin (Citadel Advisors)
+430,049
$41.0M
D.E. Shaw & Co.
+357,110
$34.0M
Izzy Englander (Millennium Mgmt)
+345,012
$32.9M
Two Sigma Investments
+218,400
$20.8M
Renaissance Technologies
+187,600
$17.9M
Wellington Management
+1,446
$138K
Ken Fisher (Fisher Asset Mgmt)
+179
$17K
T. Rowe Price
+18,638
$2K

Trimmed2

Ray Dalio (Bridgewater Associates)
−15,400
$1.5M
AQR Capital Management
−1,460
$139K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	13	15,120,900	$114.81B	—
2022Q2	12	16,495,804	$170.70B	-1
2022Q3	13	16,916,258	$1.16B	+1
2022Q4	14	18,229,938	$1.55B	+1
2023Q1	16	19,954,245	$1.68B	+2
2023Q2	13	20,139,942	$1.71B	-3
2023Q3	12	20,240,288	$1.68B	-1
2023Q4	11	21,277,371	$1.97B	-1
2024Q1	12	22,140,729	$2.17B	+1
2024Q2	14	21,676,190	$1.91B	+2
2024Q3	11	4,369,704	$450.9M	-3
2024Q4	11	3,987,060	$425.9M	—
2025Q1	12	1,728,980	$159.8M	+1
2025Q2	13	3,340,991	$376.9M	+1
2025Q3	12	1,202,668	$156.9M	-1
2025Q4	18	5,026,118	$479.1M	+6

Who owns ACM

18 super-investors · 2025Q4

Tracked stake

5.03M

Combined value

$479M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New6Added10Trim2

#	Manager	Shares	Value	% of book	Last action
1	Norges Bank Norway SWF	2.16M	$205M	0.0%	New+2.16M
2	Renaissance Technologies	637.6K	$61M	0.1%	Added+187.6K
3	Ken Griffin Citadel Advisors	514.7K	$49M	0.0%	Added+430.0K
4	Two Sigma Investments	387.2K	$37M	0.1%	Added+218.4K
5	Izzy Englander Millennium Mgmt	378.5K	$36M	0.0%	Added+345.0K
6	D.E. Shaw & Co.	358.9K	$34M	0.0%	Added+357.1K
7	T. Rowe Price	194.1K	$19M	0.0%	Added+18.6K
8	AQR Capital Management	170.8K	$16M	0.0%	Trim−1.5K
9	Paul Tudor Jones Tudor Investment	94.0K	$9M	0.0%	New+94.0K
10	Ray Dalio Bridgewater Associates	42.7K	$4M	0.0%	Trim−15.4K
11	Ken Griffin Citadel Advisors	31.4K	$3M	0.0%	Added+430.0K
12	Wellington Management	19.1K	$2M	0.0%	Added+1.4K
13	Jeremy Grantham GMO	16.2K	$2M	0.0%	New+16.2K
14	Ken Griffin Citadel Advisors	11.3K	$1M	0.0%	Added+430.0K
15	Steve Cohen Point72	4.3K	$410K	0.0%	New+4.3K
16	Paul Tudor Jones Tudor Investment	4.1K	$391K	0.0%	New+94.0K
17	Paul Tudor Jones Tudor Investment	3.2K	$305K	0.0%	New+94.0K
18	Ken Fisher Fisher Asset Mgmt	2.3K	$221K	0.0%	Added+179

Recent moves

20 transactions

ADDWellington Management
+1,446 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+94,016 · 2025Q4
NEWJeremy Grantham (GMO)
+16,203 · 2025Q4
TRIMAQR Capital Management
−1,460 · 2025Q4
ADDTwo Sigma Investments
+218,400 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+345,012 · 2025Q4
ADDD.E. Shaw & Co.
+357,110 · 2025Q4
ADDT. Rowe Price
+18,638 · 2025Q4
NEWSteve Cohen (Point72)
+4,300 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+430,049 · 2025Q4
TRIMRay Dalio (Bridgewater Associates)
−15,400 · 2025Q4
ADDRenaissance Technologies
+187,600 · 2025Q4
NEWNorges Bank (Norway SWF)
+2,155,657 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+179 · 2025Q4
TRIMD.E. Shaw & Co.
−11,598 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−306,897 · 2025Q3
SOLDSteve Cohen (Point72)
−22,829 · 2025Q3
ADDTwo Sigma Investments
+59,552 · 2025Q3
ADDT. Rowe Price
+26,398 · 2025Q3
ADDWellington Management
+1,546 · 2025Q3

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