Aecom
643 hedge funds and large institutions have $11B invested in Aecom in 2025 Q4 according to their latest regulatory filings, with 115 funds opening new positions, 182 increasing their positions, 249 reducing their positions, and 102 closing their positions.
81% more call options, than puts
Call options by funds: $26.2M | Put options by funds: $14.5M
13% more first-time investments, than exits
New positions opened: 115 | Existing positions closed: 102
1% more funds holding
Funds holding: 639 → 643 (+4)
0.47% less ownership
Funds ownership: 87.45% → 86.98% (-0.47%)
27% less repeat investments, than reductions
Existing positions increased: 182 | Existing positions reduced: 249
27% less capital invested
Capital invested by funds: $15.1B → $11B (-$4.1B)
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$61.4M |
| 2 |
Marshall Wace
London,
United Kingdom
|
+$53.9M |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$50.6M |
| 4 |
UBS AM
Chicago,
Illinois
|
+$47.9M |
| 5 |
Jane Street
New York
|
+$42.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AllianceBernstein
Nashville,
Tennessee
|
-$128M |
| 2 |
Pictet Asset Management
Carouge,
Switzerland
|
-$99.9M |
| 3 |
CI Investments Inc
Toronto,
Ontario, Canada
|
-$99.6M |
| 4 |
Invesco
Atlanta,
Georgia
|
-$78M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
-$74.1M |
ACM Hedge Fund Activity: Q4 2025 in Review
643 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Aecom (ACM) for Q4 2025, worth a combined $11B — down 27% from $15.1B a quarter earlier.
Buyers outnumbered sellers: 115 funds opened new ACM positions and 102 closed out — a net gain of 13 holders — while 182 added to existing stakes and 249 trimmed.
The largest buyer was BlackRock, adding an estimated $61.4M. The largest seller was AllianceBernstein, cutting an estimated $128M.
- 643 institutional investors held Aecom (ACM) as of Q4 2025, up from 639 in Q3 2025.
- Funds reported $11B of Aecom stock for Q4 2025, down 27% quarter-over-quarter.
- 115 funds opened new Aecom positions in Q4 2025 and 102 closed out, a net change of +13 holders.
- The largest Aecom buyer in Q4 2025 was BlackRock, an estimated $61.4M added.
- The largest Aecom seller in Q4 2025 was AllianceBernstein, an estimated $128M sold.
Based on aggregated 13F filings for Q4 2025.