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1,151 hedge funds and large institutions have $43B invested in Ametek in 2026 Q1 according to their latest regulatory filings, with 136 funds opening new positions, 463 increasing their positions, 369 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

114% more call options, than puts

Call options by funds: $99M | Put options by funds: $46.3M

51% more first-time investments, than exits

New positions opened: 136 | Existing positions closed: 90

25% more repeat investments, than reductions

Existing positions increased: 463 | Existing positions reduced: 369

2% more funds holding

Funds holding: 1,1261,151 (+25)

2% more capital invested

Capital invested by funds: $42.1B → $43B (+$859M)

1.54% less ownership

Funds ownership: 89.22%87.68% (-1.5%)

8% less funds holding in top 10

Funds holding in top 10: 2422 (-2)

Holders
1,151
Holders Change
+25
Holders Change %
+2.22%
% of All Funds
14.18%
Holding in Top 10
22
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-8.33%
% of All Funds
0.27%
New
136
Increased
463
Reduced
369
Closed
90
Calls
$99M
Puts
$46.3M
Net Calls
+$52.8M
Net Calls Change
+$14.7M
Name Holding Trade Value Shares
Change
Change in
Stake
Russell Investments Group
101
Russell Investments Group
United Kingdom
$79.8M +$8.04M +36,199 +11%
Millennium Management
102
Millennium Management
New York
$79.3M -$98.4M -442,971 -54%
GT
103
Glenmede Trust
Pennsylvania
$79M -$1.15M -5,183 -1%
MDSL
104
M.D. Sass LLC
New York
$77.6M -$3.82M -17,185 -5%
FAM
105
Fenimore Asset Management
New York
$77M -$1.92M -8,638 -2%
SG Americas Securities
106
SG Americas Securities
New York
$76.5M +$37.6M +169,108 +90%
LCIP
107
Life Cycle Investment Partners
$74.6M +$26.5M +119,459 +52%
ERSOT
108
Employees Retirement System of Texas
Texas
$73M +$17.4M +78,240 +30%
National Pension Service
109
National Pension Service
South Korea
$71.5M +$6.06M +27,252 +9%
CAPTRUST Financial Advisors
110
CAPTRUST Financial Advisors
North Carolina
$69.5M +$12.4M +55,832 +21%
Janus Henderson Group
111
Janus Henderson Group
United Kingdom
$68.8M -$17.3M -78,040 -20%
DB
112
Danske Bank
Denmark
$67.9M -$890K -4,006 -1%
RMDI
113
R.M. Davis Inc
Maine
$65.8M -$934K -4,204 -1%
Renaissance Technologies
114
Renaissance Technologies
New York
$65.6M +$33.7M +151,500 +98%
CRC
115
Curi RMB Capital
Illinois
$64.4M +$1.28M +5,758 +2%
Victory Capital Management
116
Victory Capital Management
Texas
$62.8M +$835K +3,757 +1%
Universal-Beteiligungs- und Servicegesellschaft
117
Universal-Beteiligungs- und Servicegesellschaft
Germany
$61.6M -$274K -1,235 -0.4%
FGP
118
Freestone Grove Partners
California
$61.2M -$68.5M -308,450 -52%
Artisan Partners
119
Artisan Partners
Wisconsin
$58.6M +$21M +94,347 +53%
Treasurer of the State of North Carolina
120
Treasurer of the State of North Carolina
North Carolina
$58.4M +$4.23M +19,034 +8%
PPF
121
PFA Pension Forsikringsaktieselskab
$58.4M -$222 -1 -0%
CBU
122
CIBC Bancorp USA
Illinois
$57.8M +$59.9M +269,706 New
Mariner
123
Mariner
Kansas
$55.4M +$4.66M +20,985 +9%
Jennison Associates
124
Jennison Associates
New York
$55M +$27.5M +123,719 +93%
Canada Life
125
Canada Life
Manitoba, Canada
$54.5M -$1.55M -6,993 -3%