Aecom Ownership | Who Owns Aecom?
Aecom Ownership Summary
Aecom is owned by 67.31% institutional investors, 0.48% insiders, and 32.21% 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 | 67.31% | 0.48% | 32.21% |
| Sector | Industrials Stocks | 47.66% | 12.56% | 39.78% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 17.32M | 12.74% | $1.53B |
| Blackrock funding, inc. /de | 15.21M | 11.62% | $1.45B |
| Vanguard group | 12.29M | 9.29% | $1.17B |
| Primecap management co/ca/ | 8.65M | 6.61% | $733.44M |
| 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 |
| Ubs asset management americas | 2.77M | 2.12% | $264.44M |
| Alliancebernstein | 2.61M | 1.97% | $340.18M |
| Geode capital management | 2.44M | 1.87% | $232.36M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Sandhill capital partners | 472.17K | 3.21% | $45.01M |
| S&t bank/pa | 68.54K | 2.51% | $8.94M |
| Stanley capital management | 116.40K | 1.86% | $11.10M |
| Lombard odier asset management (europe) | 235.28K | 1.55% | $30.70M |
| Steinberg asset management | 28.19K | 1.55% | $2.39M |
| Payden & rygel investment group | 198.27K | 1.41% | $17.48M |
| Findlay park partners llp | 1.01M | 1.38% | $131.52M |
| Rithm capital | 5.00K | 1.32% | $652.35K |
| Buckingham capital management | 94.10K | 1.15% | $10.05M |
| Value management | 82.00K | 1.13% | $6.96M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| First trust advisors lp | 4.22M | 0.41% | 2.16M |
| Norges bank | 2.16M | 0.02% | 2.16M |
| Vanguard fiduciary trust | 802.68K | 0.02% | 802.68K |
| Invesco | 4.98M | 0.10% | 618.21K |
| Blackrock funding, inc. /de | 15.21M | 0.02% | 521.69K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Agf management | - | - | -964.76K |
| Ci investments | 310.76K | 0.13% | -846.66K |
| Amundi | 1.04M | 0.04% | -806.91K |
| Pictet asset management sa | 2.13M | 0.19% | -793.97K |
| Starboard value lp | - | - | -625.44K |
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 |
| Axa investment managers | 281.31K | 0.10% | 281.31K | $36.70M |
| Signature estate & investment advisors | 103.69K | 0.18% | 103.69K | $8.79M |
| Fjarde ap-fonden (the fourth swedish national pensionfund) | 89.28K | 0.09% | 89.28K | $7.87M |
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 % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Dec 31, 2024 | 563 | 5.83% | 115,264,785 | 0.63% | 86 | 1.20% | 294 | 18.55% | 171 | -8.56% |
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 |
|---|---|---|---|---|
| Dec 15, 2025 | Gan David Y. | CHIEF LEGAL OFFICER | Sell | $593.10K |
| Dec 17, 2025 | Gan David Y. | CHIEF LEGAL OFFICER | Sell | $921.79K |
| Dec 17, 2025 | Poloni Lara | PRESIDENT | Sell | $18.98K |
| Dec 17, 2025 | Poloni Lara | PRESIDENT | Sell | $1.68M |
| Aug 15, 2025 | Rudd Troy | CHIEF EXECUTIVE OFFICER | Sell | $5.01M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 2 |
| 2025 Q1 | - | - |
| 2024 Q4 | - | 12 |
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