Ametek
1,127 hedge funds and large institutions have $42.1B invested in Ametek in 2025 Q4 according to their latest regulatory filings, with 184 funds opening new positions, 400 increasing their positions, 373 reducing their positions, and 71 closing their positions.
159% more first-time investments, than exits
New positions opened: 184 | Existing positions closed: 71
78% more call options, than puts
Call options by funds: $87.1M | Put options by funds: $49M
71% more funds holding in top 10
Funds holding in top 10: 14 → 24 (+10)
13% more capital invested
Capital invested by funds: $37.4B → $42.1B (+$4.7B)
9% more funds holding
Funds holding: 1,034 → 1,127 (+93)
2.79% more ownership
Funds ownership: 86.33% → 89.12% (+2.8%)
7% more repeat investments, than reductions
Existing positions increased: 400 | Existing positions reduced: 373
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$411M |
| 2 |
Balyasny Asset Management
Chicago,
Illinois
|
+$176M |
| 3 |
1832 Asset Management
Toronto,
Ontario, Canada
|
+$156M |
| 4 |
Nordea Investment Management
Stockholm,
Sweden
|
+$148M |
| 5 |
D.E. Shaw & Co
New York
|
+$108M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$377M |
| 2 |
Lazard Asset Management
New York
|
-$214M |
| 3 |
Goldman Sachs
New York
|
-$141M |
| 4 |
Capital World Investors
Los Angeles,
California
|
-$137M |
| 5 |
PAM
Panagora Asset Management
Boston,
Massachusetts
|
-$88.1M |
AME Hedge Fund Activity: Q4 2025 in Review
1,127 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Ametek (AME) for Q4 2025, worth a combined $42.1B — up 13% from $37.4B a quarter earlier.
Buyers outnumbered sellers: 184 funds opened new AME positions and 71 closed out — a net gain of 113 holders — while 400 added to existing stakes and 373 trimmed.
The largest buyer was Wellington Management Group, adding an estimated $411M. The largest seller was T. Rowe Price Associates, cutting an estimated $377M.
- 1,127 institutional investors held Ametek (AME) as of Q4 2025, up from 1,034 in Q3 2025.
- Funds reported $42.1B of Ametek stock for Q4 2025, up 13% quarter-over-quarter.
- 184 funds opened new Ametek positions in Q4 2025 and 71 closed out, a net change of +113 holders.
- The largest Ametek buyer in Q4 2025 was Wellington Management Group, an estimated $411M added.
- The largest Ametek seller in Q4 2025 was T. Rowe Price Associates, an estimated $377M sold.
Based on aggregated 13F filings for Q4 2025.