Aecom Ownership | Who Owns Aecom?

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Aecom Ownership Summary

Aecom is owned by 86.53% institutional investors, 0.49% insiders, and 12.98% 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 3.38% of its assets in Aecom shares.

ACM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Aecom	86.53%	0.49%	12.98%
Sector	Industrials Stocks	49.67%	15.62%	34.71%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	17.32M	12.74%	$1.53B
Blackrock funding, inc. /de	15.76M	12.04%	$1.34B
Vanguard group	12.29M	9.29%	$1.17B
Primecap management co/ca/	8.65M	6.61%	$733.44M
State street	5.04M	3.85%	$427.62M
Invesco	3.58M	2.73%	$303.26M
Ubs asset management americas	3.48M	2.66%	$295.34M
First trust advisors lp	3.03M	2.31%	$256.70M
Barrow hanley mewhinney & strauss	2.85M	2.18%	$241.97M
Geode capital management	2.47M	1.89%	$208.88M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sandhill capital partners	585.46K	4.27%	$49.66M
Stanley capital management	116.40K	1.65%	$9.87M
Steinberg asset management	28.19K	1.55%	$2.39M
S&t bank/pa	48.17K	1.53%	$4.09M
Payden & rygel investment group	198.27K	1.41%	$17.48M
Rithm capital	10.25K	1.29%	$869.40K
Buckingham capital management	94.10K	1.15%	$10.05M
Value management	82.00K	1.13%	$6.96M
Hennessy advisors	285.70K	0.88%	$24.23M
Impax asset management group	1.38M	0.82%	$117.28M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	2.16M	0.02%	2.16M
Fmr	2.11M	0.01%	921.65K
Aqr capital management	1.06M	0.04%	890.44K
Barrow hanley mewhinney & strauss	2.85M	0.79%	883.30K
Vanguard fiduciary trust	802.68K	0.02%	802.68K

Top Sellers

Holder	Shares	% Assets	Change
First trust advisors lp	3.03M	0.18%	-1.05M
Mariner	205.67K	0.02%	-1.02M
Agf management	-	-	-964.76K
Alliancebernstein	558.23K	0.02%	-958.42K
Panagora asset management	344.37K	0.11%	-937.28K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	2.16M	0.02%	2.16M	$205.50M
Vanguard fiduciary trust	802.68K	0.02%	802.68K	$68.08M
Lazard asset management	644.73K	0.09%	644.73K	$54.69M
Axa investment managers	281.31K	0.10%	281.31K	$36.70M
Balyasny asset management	267.61K	0.03%	267.61K	$22.70M

Sold Out

Holder	Change
New millennium group	-1.00
Mv capital management	-1.00
American capital advisory	-2.00
Optima capital	-2.00
Financial management professionals	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	620	-5.20%	113,263,467	-1.59%	86	1.12%	328	12.71%	198	-21.12%
Dec 31, 2025	478	-26.12%	89,028,186	-23.14%	67	0.88%	195	-35.86%	188	-15.70%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	4.36M	3.38%	-2.19K
Vanguard US Total Market Shares ETF	4.26M	3.21%	-61.36K
Vanguard Total Stock Mkt Idx Inv	4.11M	3.18%	-65.80K
Vanguard Capital Opportunity Inv	3.44M	2.66%	-12.10K
Vanguard Small Cap Index	2.98M	2.31%	-9.22K
Vanguard Small Cap Value Index Inv	1.90M	1.47%	-23.23K
Vanguard PRIMECAP Core Inv	1.70M	1.31%	42.50K
Pictet Water Segregated Accounts	1.70M	1.27%	1.70M
First Trust Rising Dividend Achiev ETF	1.57M	1.21%	1.07K
Vanguard Institutional Extnd Mkt Idx Tr	1.45M	1.12%	1.83K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 14, 2026	Kapoor Gaurav	CHIEF FINANCIAL OFFICER (PAO)	Buy	$100.99K
May 14, 2026	Rudd Troy	CHIEF EXECUTIVE OFFICER	Buy	$300.06K
Dec 17, 2025	Gan David Y.	CHIEF LEGAL OFFICER	Sell	$921.79K
Dec 15, 2025	Gan David Y.	CHIEF LEGAL OFFICER	Sell	$593.10K
Dec 17, 2025	Poloni Lara	PRESIDENT	Sell	$18.98K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	2	-
2026 Q1	-	-
2025 Q4	-	4
2025 Q3	-	2
2025 Q1	-	-

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 (15.76M shares, 12.04%), and Vanguard group (12.29M shares, 9.29%). Together, they hold 34.07% 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 4.27% of its assets in 585.46K Aecom shares, valued at 49.66M$.

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 3.38% of its total shares outstanding invested in 4.36M Aecom shares.

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