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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 %
William Blair & Company
51
William Blair & Company
Illinois
$199M -$2.81M -42,844 -1%
TD Asset Management
52
TD Asset Management
Ontario, Canada
$198M -$17.6M -268,518 -8%
Principal Financial Group
53
Principal Financial Group
Iowa
$189M +$18.6M +284,314 +11%
National Pension Service
54
National Pension Service
South Korea
$188M +$7.04M +107,275 +4%
Natixis Advisors
55
Natixis Advisors
Massachusetts
$187M +$369K +5,622 +0.2%
Kayne Anderson Rudnick Investment Management
56
Kayne Anderson Rudnick Investment Management
California
$176M -$13.8M -210,758 -7%
MIM
57
Meridiem Investment Management
United Kingdom
$171M -$41.2M -627,962 -19%
CIBC Private Wealth Group
58
CIBC Private Wealth Group
Georgia
$170M -$2.07M -34,443 -1%
Alkeon Capital Management
59
Alkeon Capital Management
New York
$167M +$9.9M +150,953 +6%
MAM
60
Madison Asset Management
Wisconsin
$167M +$18M +274,945 +12%
HSBC Holdings
61
HSBC Holdings
United Kingdom
$166M -$40.2M -613,143 -19%
JIM
62
Jensen Investment Management
Oregon
$165M -$137K -2,085 -0.1%
Raymond James Financial
63
Raymond James Financial
Florida
$159M +$55.8M +850,582 +54%
RhumbLine Advisers
64
RhumbLine Advisers
Massachusetts
$158M +$3.62M +55,119 +2%
Los Angeles Capital Management
65
Los Angeles Capital Management
California
$157M +$46.4M +707,272 +42%
FAM
66
Fenimore Asset Management
New York
$151M -$516K -7,869 -0.3%
Mitsubishi UFJ Asset Management
67
Mitsubishi UFJ Asset Management
Japan
$146M +$15.6M +237,451 +12%
Ameriprise
68
Ameriprise
Minnesota
$144M +$2.82M +44,578 +2%
Bank of Montreal
69
Bank of Montreal
Ontario, Canada
$144M -$9.33M -142,208 -6%
Bank Julius Baer & Co
70
Bank Julius Baer & Co
Switzerland
$142M +$125M +1,733,901 +714%
LCOV
71
London Company of Virginia
Virginia
$140M -$68.9M -1,050,525 -33%
Man Group
72
Man Group
United Kingdom
$138M -$15.4M -235,177 -10%
CG
73
Carmignac Gestion
France
$136M +$72M +1,097,000 +113%
JHP
74
James Hambro & Partners
United Kingdom
$135M +$6.75M +102,875 +5%
Arrowstreet Capital
75
Arrowstreet Capital
Massachusetts
$130M -$46.7M -711,303 -26%
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