Aecom Ownership | Who Owns Aecom?

Overview Forecast RevenueFinancials Chart Transcripts

Aecom Ownership Summary

Aecom is owned by 84.06% institutional investors, 0.49% insiders, and 15.45% retail investors. Blackrock is the largest institutional shareholder, holding 12.74% of ACM shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.25% of its assets in Aecom shares.

ACM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Aecom	84.06%	0.49%	15.45%
Sector	Industrials Stocks	46.77%	12.62%	40.60%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	17.32M	12.74%	$1.53B
Blackrock funding, inc. /de	14.69M	11.10%	$1.92B
Vanguard group	12.52M	9.46%	$1.63B
Primecap management co/ca/	8.88M	6.71%	$1.16B
State street	5.11M	3.86%	$666.39M
Invesco	4.98M	3.76%	$649.74M
First trust advisors lp	4.22M	3.19%	$550.11M
Pictet asset management sa	3.64M	2.75%	$410.56M
Alliancebernstein	2.61M	1.97%	$340.18M
Geode capital management	2.42M	1.83%	$314.60M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sandhill capital partners	486.77K	4.43%	$63.51M
Steinberg asset management	29.10K	2.73%	$3.80M
S&t bank/pa	68.54K	2.51%	$8.94M
Stanley capital management	116.40K	2.50%	$15.19M
Nia impact advisors	48.91K	2.07%	$6.38M
Benson investment management company	39.83K	1.78%	$5.20M
Payden & rygel	148.40K	1.61%	$19.36M
Lombard odier asset management (europe)	235.28K	1.55%	$30.70M
Hennessy advisors	333.20K	1.50%	$43.47M
Sharpepoint	12.54K	1.48%	$1.64M

Top Buyers

Holder	Shares	% Assets	Change
First trust advisors lp	4.22M	0.41%	2.16M
Norges bank	1.78M	0.03%	1.78M
Ubs group	1.62M	0.03%	672.28K
Invesco	4.98M	0.10%	618.21K
Panagora asset management	1.03M	0.54%	505.41K

Top Sellers

Holder	Shares	% Assets	Change
Pictet asset management sa	3.64M	0.42%	-1.00M
Agf management	-	-	-964.76K
Amundi	1.04M	0.04%	-806.91K
Primecap management co/ca/	8.88M	0.89%	-684.89K
Starboard value lp	-	-	-625.44K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	1.78M	0.03%	1.78M	$190.50M
Hennessy advisors	333.20K	1.50%	333.20K	$43.47M
Axa investment managers	281.31K	0.10%	281.31K	$36.70M
Fjarde ap-fonden (the fourth swedish national pensionfund)	89.28K	0.09%	89.28K	$7.87M
Horizon investments	28.82K	0.05%	28.82K	$3.75M

Sold Out

Holder	Change
Mv capital management	-1.00
Harbor investment advisory	-3.00
Corecap advisors	-3.00
Tfo-tdc	-4.00
Stephens consulting	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	620	-3.43%	111,211,088	-5.67%	84	1.06%	290	-12.12%	215	9.14%
Jun 30, 2025	630	9.38%	122,936,763	6.90%	92	1.23%	325	12.46%	196	-1.51%
Mar 31, 2025	573	-1.72%	114,585,373	-0.87%	86	1.14%	285	-8.06%	201	16.18%
Dec 31, 2024	563	5.83%	115,264,785	0.63%	86	1.20%	294	18.55%	171	-8.56%
Sep 30, 2024	525	1.55%	114,191,312	-1.85%	83	1.15%	244	-5.43%	186	16.25%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	4.31M	3.25%	-
Vanguard US Total Market Shares ETF	4.26M	3.21%	-61.36K
Vanguard Total Stock Mkt Idx Inv	4.15M	3.13%	-98.68K
Vanguard Capital Opportunity Inv	3.47M	2.62%	19.12K
Vanguard Small Cap Index	3.21M	2.42%	-21.05K
Vanguard Small Cap Value Index Inv	2.07M	1.56%	3.88K
Vanguard PRIMECAP Core Inv	1.78M	1.35%	-72.51K
Pictet Water Segregated Accounts	1.70M	1.27%	1.70M
Impax Water Strategy Composite	1.49M	1.12%	-
First Trust Capital Strength ETF	1.46M	1.10%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 15, 2025	Rudd Troy	CHIEF EXECUTIVE OFFICER	Sell	$1.33M
Aug 15, 2025	Rudd Troy	CHIEF EXECUTIVE OFFICER	Sell	$5.01M
Dec 16, 2024	Gan David Y.	CHIEF LEGAL OFFICER	Sell	$843.00K
Dec 16, 2024	Gan David Y.	CHIEF LEGAL OFFICER	Sell	$438.76K
Dec 17, 2024	Gan David Y.	CHIEF LEGAL OFFICER	Sell	$701.03K

Insider Transactions Trends

Date	Buy	Sell
2024 Q4	-	12
2024 Q3	-	2
2024 Q2	-	1
2024 Q1	-	1
2023 Q4	-	4

ACM Ownership FAQ

Who owns the most shares of Aecom?

Aecom’s largest shareholders are Blackrock (17.32M shares, 12.74%), Blackrock funding, inc. /de (14.69M shares, 11.10%), and Vanguard group (12.52M shares, 9.46%). Together, they hold 33.30% of Aecom’s total shares outstanding.

Does Blackrock own Aecom?

Yes, BlackRock owns 12.74% of Aecom, totaling 17.32M shares as of Jun 2024. This represents 0.03% of BlackRock's total assets, with a market value of 1.53B$. In the last quarter, BlackRock decreased its holdings by -381K shares, a -2.15% change.

Who is Aecom’s biggest shareholder by percentage of total assets invested?

Sandhill capital partners is Aecom’s biggest shareholder by percentage of total assets invested, with 4.43% of its assets in 486.77K Aecom shares, valued at 63.51M$.

Who is the top mutual fund holder of Aecom shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Aecom shares, with 3.25% of its total shares outstanding invested in 4.31M Aecom shares.

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