1,146 hedge funds and large institutions have $43B invested in Ametek in 2026 Q1 according to their latest regulatory filings, with 137 funds opening new positions, 461 increasing their positions, 367 reducing their positions, and 92 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,146
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
22
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$99M
Puts
$46.3M
Net Calls
Net Calls Change

Top Buyers

1 +$247M
2 +$168M
3 +$143M
4
Two Sigma Investments
Two Sigma Investments
New York
+$138M
5
JP Morgan Chase
JP Morgan Chase
New York
+$122M

Top Sellers

1 -$256M
2 -$232M
3 -$215M
4
BlackRock
BlackRock
New York
-$183M
5
ATO
Alecta Tjanstepension Omsesidigt
Sweden
-$165M
Name Holding Trade Value Shares
Change
Change in
Stake
MPIA
151
Mountain Pacific Investment Advisers
Idaho
$38.6M
DKCM
152
Davidson Kempner Capital Management
New York
$38.6M
NSAM
153
North Star Asset Management
Wisconsin
$37.6M
Marshall Wace
154
Marshall Wace
United Kingdom
$37.1M
MVIP
155
Mar Vista Investment Partners
California
$36.7M
HCMG
156
Howard Capital Management Group
California
$35.4M
DP
157
Dundas Partners
United Kingdom
$35.1M
Teacher Retirement System of Texas
158
Teacher Retirement System of Texas
Texas
$34.8M
QCM
159
Quantinno Capital Management
New York
$34.4M
New York State Teachers Retirement System (NYSTRS)
160
New York State Teachers Retirement System (NYSTRS)
New York
$34.4M
Jane Street
161
Jane Street
New York
$34.1M
Allspring Global Investments
162
Allspring Global Investments
North Carolina
$34.1M
AV
163
ASR Vermogensbeheer
Netherlands
$33.5M
Daiwa Securities Group
164
Daiwa Securities Group
Japan
$33.2M
Walleye Capital
165
Walleye Capital
New York
$32.7M
SAM
166
Storebrand Asset Management
Norway
$32M
National Bank of Canada
167
National Bank of Canada
Quebec, Canada
$31.9M
GAM
168
Gotham Asset Management
New York
$31.7M
Korea Investment Corp
169
Korea Investment Corp
South Korea
$31.5M
Manulife (Manufacturers Life Insurance)
170
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$31.4M
SO
171
STRS Ohio
Ohio
$31.1M
LPL Financial
172
LPL Financial
California
$30.8M
CP
173
Cumberland Partners
Ontario, Canada
$30.8M
ZIC
174
ZWJ Investment Counsel
Georgia
$30.1M
VNIM
175
Vaughan Nelson Investment Management
Texas
$30.1M