Aecom Ownership | Who Owns Aecom?

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Aecom Ownership Summary

Aecom is owned by 92.92% institutional investors, 0.51% insiders, and 6.57% 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 3.26% of its assets in Aecom shares.

ACM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Aecom	92.92%	0.51%	6.57%
Sector	Industrials Stocks	64.00%	12.69%	23.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	17.32M	12.74%	$1.53B
Blackrock funding, inc. /de	15.28M	11.55%	$1.72B
Vanguard group	12.80M	9.45%	$1.37B
Primecap management co/ca/	9.56M	7.23%	$1.08B
Brinker capital investments	5.34M	4.03%	$132.00M
State street	5.14M	3.88%	$548.95M
Pictet asset management sa	3.64M	2.75%	$410.56M
Alliancebernstein	3.72M	2.74%	$397.20M
Ubs asset management americas	2.68M	1.98%	$286.31M
Invesco	2.46M	1.82%	$263.09M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sandhill capital partners	345.75K	2.90%	$36.93M
S&t bank/pa	80.78K	2.75%	$8.63M
Steinberg asset management	29.51K	2.48%	$3.33M
Nia impact advisors	60.36K	2.35%	$6.81M
Stanley capital management	116.40K	2.21%	$13.14M
Benson investment management company	46.01K	1.97%	$5.19M
Lombard odier asset management (europe)	186.01K	1.47%	$20.99M
Payden & rygel investment group	198.27K	1.41%	$17.48M
Payden & rygel	150.80K	1.41%	$17.02M
Findlay park partners llp	1.03M	1.19%	$115.82M

Top Buyers

Holder	Shares	% Assets	Change
Brinker capital investments	5.34M	1.13%	5.32M
Norges bank	1.78M	0.03%	1.78M
Lord, abbett	712.76K	0.26%	712.76K
Ubs asset management americas	2.68M	0.07%	691.02K
Panagora asset management	531.68K	0.26%	487.77K

Top Sellers

Holder	Shares	% Assets	Change
Pictet asset management sa	3.64M	0.42%	-1.00M
Agf management	-	-	-964.76K
Starboard value lp	-	-	-625.44K
Primecap management co/ca/	9.56M	0.86%	-585.48K
Invesco	2.46M	0.05%	-522.47K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	1.78M	0.03%	1.78M	$190.50M
Lord, abbett	712.76K	0.26%	712.76K	$80.44M
Sandhill capital partners	345.75K	2.90%	345.75K	$36.93M
Caisse de depot et placement du quebec	153.70K	0.04%	153.70K	$17.35M
Aviva	98.61K	0.02%	98.61K	$11.13M

Sold Out

Holder	Change
Mv capital management	-1.00
Financial management professionals	-1.00
Harbor investment advisory	-3.00
Corecap advisors	-3.00
Tfo-tdc	-4.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Jun 30, 2024	513	-1.54%	116,213,438	1.48%	85	1.20%	255	-3.41%	159	1.27%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	4.31M	3.26%	-7.75K
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	1.47M	1.11%	-

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 (15.28M shares, 11.55%), and Vanguard group (12.8M shares, 9.45%). Together, they hold 33.73% 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 2.90% of its assets in 345.75K Aecom shares, valued at 36.93M$.

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 3.26% of its total shares outstanding invested in 4.31M Aecom shares.

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