Ametek
1,034 hedge funds and large institutions have $37.4B invested in Ametek in 2025 Q3 according to their latest regulatory filings, with 121 funds opening new positions, 389 increasing their positions, 341 reducing their positions, and 73 closing their positions.
221% more call options, than puts
Call options by funds: $48.8M | Put options by funds: $15.2M
66% more first-time investments, than exits
New positions opened: 121 | Existing positions closed: 73
14% more repeat investments, than reductions
Existing positions increased: 389 | Existing positions reduced: 341
3% more funds holding
Funds holding: 1,002 → 1,034 (+32)
2% more capital invested
Capital invested by funds: $36.8B → $37.4B (+$646M)
1.71% less ownership
Funds ownership: 88.04% → 86.33% (-1.7%)
7% less funds holding in top 10
Funds holding in top 10: 15 → 14 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Lazard Asset Management
New York
|
+$128M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$118M |
| 3 |
Man Group
London,
United Kingdom
|
+$116M |
| 4 |
CLOS
Compagnie Lombard Odier SCmA
1204 Geneva,
Switzerland
|
+$116M |
| 5 |
HSBC Holdings
London,
United Kingdom
|
+$114M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of New York Mellon
New York
|
-$221M |
| 2 |
Capital World Investors
Los Angeles,
California
|
-$192M |
| 3 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$161M |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$141M |
| 5 |
JP Morgan Chase
New York
|
-$100M |
AME Hedge Fund Activity: Q3 2025 in Review
1,034 of the 7,638 institutional investors tracked by Wall St. Rank reported a position in Ametek (AME) for Q3 2025, worth a combined $37.4B — up 1.8% from $36.8B a quarter earlier.
Buyers outnumbered sellers: 121 funds opened new AME positions and 73 closed out — a net gain of 48 holders — while 389 added to existing stakes and 341 trimmed.
The largest buyer was Lazard Asset Management, adding an estimated $128M. The largest seller was Bank of New York Mellon, cutting an estimated $221M.
- 1,034 institutional investors held Ametek (AME) as of Q3 2025, up from 1,002 in Q2 2025.
- Funds reported $37.4B of Ametek stock for Q3 2025, up 1.8% quarter-over-quarter.
- 121 funds opened new Ametek positions in Q3 2025 and 73 closed out, a net change of +48 holders.
- The largest Ametek buyer in Q3 2025 was Lazard Asset Management, an estimated $128M added.
- The largest Ametek seller in Q3 2025 was Bank of New York Mellon, an estimated $221M sold.
Based on aggregated 13F filings for Q3 2025.