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Amphenol
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Overview Fund Activity

1,410 hedge funds and large institutions have $74.1B invested in Amphenol in 2025 Q1 according to their latest regulatory filings, with 184 funds opening new positions, 593 increasing their positions, 463 reducing their positions, and 137 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,410
Holders Change
+22
Holders Change %
+1.59%
% of All Funds
19.16%
Holding in Top 10
46
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-8%
% of All Funds
0.63%
New
184
Increased
593
Reduced
463
Closed
137
Calls
$259M
Puts
$179M
Net Calls
+$79.2M
Net Calls Change
+$60.6M

Top Buyers

1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
$1.1B
2
UBS AM
UBS AM
Illinois
$574M
3
Wellington Management Group
Wellington Management Group
Massachusetts
$798M
4
Franklin Resources
Franklin Resources
California
$725M
5
BlackRock
BlackRock
New York
$6.68B

Top Sellers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$2.76B
2
Citadel Advisors
Citadel Advisors
Florida
$77M
3
Winslow Capital Management
Winslow Capital Management
Minnesota
$250K
4
Balyasny Asset Management
Balyasny Asset Management
Illinois
$38.9M
5
Mawer Investment Management
Mawer Investment Management
Alberta, Canada
$582M
Name Holding Trade Value Shares
Change 		Shares
Change %
BMSSC
126
B. Metzler seel. Sohn & Co
Germany
$67.2M +$8.5M +129,605 +14%
AM
127
AGF Management
Ontario, Canada
$67.2M +$42.8M +652,125 +175%
Thrivent Financial for Lutherans
128
Thrivent Financial for Lutherans
Minnesota
$64.8M +$3.18M +48,447 +5%
Baird Financial Group
129
Baird Financial Group
Wisconsin
$64.8M +$17.2M +261,691 +36%
LFRG
130
Lazard Frères Gestion
France
$64.7M -$3.01M -45,930 -4%
Fiera Capital (Canada)
131
Fiera Capital (Canada)
Quebec, Canada
$64.3M -$641K -9,774 -1%
CBUSF
132
Construction & Building Unions Superannuation Fund
Australia
$63.4M +$10.4M +158,962 +20%
QCM
133
QRG Capital Management
Illinois
$62.8M -$2.39M -36,473 -4%
WorldQuant Millennium Advisors
134
WorldQuant Millennium Advisors
New York
$62.6M +$44.3M +675,851 +242%
Aberdeen Group
135
Aberdeen Group
United Kingdom
$61.5M +$34.3M +525,200 +126%
CTB
136
Country Trust Bank
Illinois
$61.3M +$7.53M +114,875 +14%
Sands Capital Management
137
Sands Capital Management
Virginia
$60.9M +$60.9M +929,152 New
Select Equity Group
138
Select Equity Group
New York
$60.5M +$11.8M +179,620 +24%
Korea Investment Corp
139
Korea Investment Corp
South Korea
$60.4M +$3.56M +54,211 +6%
CCM
140
Compass Capital Management
Minnesota
$60.2M +$619K +9,435 +1%
New York State Teachers Retirement System (NYSTRS)
141
New York State Teachers Retirement System (NYSTRS)
New York
$57.9M -$2.57M -39,197 -4%
Qube Research & Technologies (QRT)
142
Qube Research & Technologies (QRT)
United Kingdom
$57M -$16.1M -245,978 -22%
Robeco Institutional Asset Management
143
Robeco Institutional Asset Management
Netherlands
$56.1M -$1.01M -15,368 -2%
WJWM
144
Williams Jones Wealth Management
New York
$56M -$934K -14,239 -2%
GAM
145
Guinness Asset Management
United Kingdom
$56M +$15.4M +235,005 +38%
Teacher Retirement System of Texas
146
Teacher Retirement System of Texas
Texas
$55.6M -$22.3M -340,061 -29%
JSC
147
J. Stern & Co
United Kingdom
$55.4M +$4.68M +71,421 +9%
State Farm Mutual Automobile Insurance
148
State Farm Mutual Automobile Insurance
Illinois
$55M – – –
WCM
149
Wedge Capital Management
North Carolina
$54.8M -$4.85M -73,980 -8%
Mitsubishi UFJ Trust & Banking
150
Mitsubishi UFJ Trust & Banking
Japan
$53.9M -$184K -2,809 -0.3%
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