Amphenol

APH • NYSE

Amphenol is a hardware, equipment & parts company in the technology sector on NYSE, led by Richard Adam Norwitt, with a market cap of $170.25B. As of Q3 2025, 92% of shares are held by 1,773 institutional investors, with VANGUARD GROUP INC as the largest holder at 10.26%.

President and Chief Executive OfficerRichard Adam Norwitt

Market Cap$170.25B

Hardware, Equipment & Parts

Technology

Employees95.0K

Websiteamphenol.com

Country

United States of America

Overview

Overview of institutional ownership in APH as of Q3 2025 with a market cap of $151.09B

All Institutions

Institutions: 1,773
Value Held: $138.84B
Shares Held: 1.12B
Avg Position: $78.3M
Median Position: $1.7M

Hedge Funds

Hedge Funds: 109
Value Held: $5.8B
Shares Held: 46.5M
Avg Position: $52.8M
Median Position: $6.9M

Ownership Breakdown

Institutional (non-HF)

88.08%

$133.09B

Hedge Funds

3.81%

$5.8B

Retail & Other

8.11%

$12.2B

Based on market cap of $151.09B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in APH as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$15.5B 0.23% of portfolio	10.26% 125.2M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
B BlackRock, Inc. Institution	-	$12.5B 0.22% of portfolio	8.26% 100.8M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
FMR LLC Institution	-	$12.4B 0.64% of portfolio	8.18% 99.8M shares	≤ Q2 2013 Held for 12y 5m+	$1.92T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$6.9B 0.24% of portfolio	4.59% 56.0M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$5.5B 0.60% of portfolio	3.61% 44.1M shares	≤ Q2 2013 Held for 12y 5m+	$912.31B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$3.6B 0.23% of portfolio	2.42% 29.6M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
Bank of New York Mellon Corp Institution	Robin Vince CEO	$3.0B 0.53% of portfolio	1.97% 24.0M shares	≤ Q2 2013 Held for 12y 5m+	$556.34B
BANK OF AMERICA CORP /DE/ Institution	Brian T. Moynihan CEO	$2.8B 0.21% of portfolio	1.85% 22.6M shares	≤ Q2 2013 Held for 12y 5m+	$1.33T
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	Edward Murray Maloney CEO	$2.3B 0.71% of portfolio	1.52% 18.5M shares	≤ Q2 2013 Held for 12y 5m+	$322.72B
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$2.2B 0.14% of portfolio	1.48% 18.1M shares	≤ Q2 2013 Held for 12y 5m+	$1.65T

Net Capital Flow

Institutional buying and selling activity for APH in Q3 2025

Traded: −$232.6M
Buyers: 972
Sellers: 694
Total Bought: +$11.6B
Total Sold: −$11.8B
Avg Position: $74.6M

Biggest Buyers

Institution	Net Bought	Current Position
C Capital International Investors Institution	+$1.8B +14.7M shares	$2.2B 18.0M shares
Capital Research Global Investors RIA/Wealth	+$992.6M +8.0M shares	$1.9B 15.5M shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	+$787.4M +6.4M shares	$900.8M 7.3M shares
B BlackRock, Inc. Institution	+$778.4M +6.3M shares	$12.5B 100.8M shares
Winslow Capital Management, LLC Long Only Manager	+$548.5M +4.4M shares	$548.9M 4.4M shares
GOLDMAN SACHS GROUP INC Institution	+$517.2M +4.2M shares	$1.5B 12.2M shares
LONE PINE CAPITAL LLC Hedge Fund•Long/Short	+$374.1M +3.0M shares	$374.1M 3.0M shares
A AXIOM INTERNATIONAL INVESTORS LLC /DE Long Only Manager	+$367.7M +3.0M shares	$367.7M 3.0M shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	+$296.9M +2.4M shares	$5.5B 44.1M shares
JENNISON ASSOCIATES LLC Long Only Manager	+$287.9M +2.3M shares	$287.9M 2.3M shares

Biggest Sellers

Institution	Net Sold	Current Position
VANGUARD GROUP INC Institution	−$1.9B −15.3M shares	$15.5B 125.2M shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	−$1.2B −9.5M shares	$1.5B 12.2M shares
FMR LLC Institution	−$1.1B −8.8M shares	$12.4B 99.8M shares
Bank of New York Mellon Corp Institution	−$529.4M −4.3M shares	$3.0B 24.0M shares
D D. E. Shaw & Co., Inc. Institution	−$299.3M −2.4M shares	$253.7M 2.1M shares
A Alphinity Investment Management Pty Ltd Institution	−$231.3M −1.9M shares	$440.6M 3.6M shares
JENSEN INVESTMENT MANAGEMENT INC Long Only Manager	−$215.6M −1.7M shares	$107.6M 869.5K shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	−$206.4M −1.7M shares	$28.2M 228.0K shares
R ROYAL BANK OF CANADA Institution	−$198.5M −1.6M shares	$1.4B 11.5M shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	−$198.0M −1.6M shares	$2.3B 18.5M shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited APH in Q3 2025

New Positions: 161
New Value: $990.1M
Exited Positions: 87
Exited Value: $481.9M

New Positions

Institution	Position Value
LONE PINE CAPITAL LLC Hedge Fund•Long/Short	$374.1M 3.0M shares
A AXIOM INTERNATIONAL INVESTORS LLC /DE Long Only Manager	$367.7M 3.0M shares
Main Street Research LLC RIA/Wealth	$36.8M 297.3K shares
C CCLA Investment Management Ltd Institution	$30.2M 243.9K shares
C Capitolis Liquid Global Markets LLC Private Equity	$24.8M 200.0K shares
C CAPITAL INTERNATIONAL S A Institution	$10.2M 82.4K shares
T TRIGLAV SKLADI, D.O.O. Institution	$10.2M 82.3K shares
A Aware Super Pty Ltd as trustee of Aware Super Institution	$9.0M 72.4K shares
W Waratah Capital Advisors Ltd. Hedge Fund•Multi-Strategy	$8.8M 70.9K shares
Portfolio 21 Investments RIA/Wealth	$8.7M 70.5K shares

Exited Positions

Institution	Previous Position
WORLDQUANT MILLENNIUM QUANTITATIVE STRATEGIES LLC Hedge Fund•Multi-Strategy	$105.5M 1.1M shares
C Cubist Systematic Strategies, LLC Institution	$66.2M 670.5K shares
A AXA Institution	$40.8M 413.1K shares
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy	$40.8M 412.8K shares
S Senator Investment Group LP Institution	$35.6M 360.2K shares
N NATIXIS Institution	$32.2M 325.9K shares
S S.A.C. Capital Advisors Ltd. Institution	$19.9M 201.7K shares
N Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. Institution	$16.2M 163.8K shares
Symphony Financial, Ltd. Co. RIA/Wealth	$13.4M 135.5K shares
Point72 Ltd RIA/Wealth	$13.2M 133.5K shares

Options Activity

Institutions with the largest Call and Put options positions in APH as of Q3 2025

Call Positions: 31
Call Value: $698.3M
Put Positions: 34
Put Value: $498.6M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$118.3M 9.6K contracts
UBS Group AG Institution	$80.7M 6.5K contracts
R ROYAL BANK OF CANADA Institution	$61.9M 5.0K contracts
J JANE STREET GROUP, LLC Institution	$57.7M 4.7K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$56.5M 4.6K contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$53.4M 4.3K contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$49.1M 4.0K contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$33.2M 2.7K contracts
W WOLVERINE TRADING, LLC Institution	$32.3M 2.7K contracts
S SCOPUS ASSET MANAGEMENT, L.P. Hedge Fund•Long/Short	$28.5M 2.3K contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$144.4M 11.7K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$84.1M 6.8K contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$63.1M 5.1K contracts
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$36.7M 3.0K contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$33.3M 2.7K contracts
J JANE STREET GROUP, LLC Institution	$31.0M 2.5K contracts
C Cubist Systematic Strategies, LLC Institution	$22.9M 1.8K contracts
W WOLVERINE TRADING, LLC Institution	$13.3M 1.1K contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$11.8M 954.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$9.1M 739.0 contracts

Most Committed Institutions

Institutions with APH as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
V Varenne Capital Partners Institution	-	15.72% $74.5M	0.05% 601.9K shares	Q3 2024 Held for 1y 2m	$473.9M
A Atalan Capital Partners, LP Hedge Fund•Long/Short	David Randolph Thomas Managing Partner	12.85% $184.1M	0.12% 1.5M shares	Q4 2023 Held for 1y 11m	$1.4B
Maren Capital LLC Long Only Manager	Bradley Carl Schatz CEO	10.67% $191.7M	0.13% 1.5M shares	Q4 2023 Held for 1y 11m	$1.8B
MOUNTAIN PACIFIC INVESTMENT ADVISERS INC/ID RIA/Wealth	William John Palumbo CEO	9.26% $59.2M	0.04% 478.0K shares	≤ Q2 2013 Held for 12y 5m+	$639.0M
Baer Investment Advisory LLC RIA/Wealth	Darel Andrew Baer CEO	8.10% $6.5M	0.00% 52.3K shares	Q4 2024 Held for 11 months	$79.9M
James Hambro & Partners RIA/Wealth	Andrew J Steel CEO	8.02% $225.5M	0.15% 1.8M shares	Q3 2019 Held for 6y 2m	$2.8B
Ayrshire Capital Management LLC RIA/Wealth	John Merritt Nevin Managing Partner	7.68% $16.6M	0.01% 133.8K shares	Q4 2019 Held for 5y 11m	$215.5M
J. Stern & Co. LLP Long Only Manager	Christopher Allen Rossbach Managing Partner	7.54% $99.6M	0.07% 805.1K shares	Q4 2023 Held for 1y 11m	$1.3B
CTF Capital Management, LP Hedge Fund•Long/Short	Sky Wilber CIO	7.51% $16.1M	0.01% 130.0K shares	Q4 2023 Held for 1y 11m	$214.3M
WS Portfolio Advisory, LLC Long Only Manager	Warwick Dean Simons Managing Partner	7.30% $134.5K	0.00% 1.1K shares	Q1 2025 Held for 8 months	$1.8M

Hedge Fund Spotlight

Discover hedge funds investing in APH

AXQ CAPITAL, LP

Hedge Fund • Market Neutral

Portfolio ManagerTaro Hsu Kuriyama

Portfolio Value: $261.9M
Positions: 552
Last Reported: Q3 2025

Sector Allocation

Position in Amphenol

Market Value: $1.7M
Shares Held: 13.7K
Portfolio Weight: 0.65%
Owned Since: 2025-Q2

Top Holding	Sector	Market Value	Weight
1 Dover DOV	Industrial - Machinery Industrials	$2.0M	0.75%
2 Arista Networks ANET	Computer Hardware Technology	$1.9M	0.72%
3 Vistra VST	Independent Power Producers Utilities	$1.9M	0.71%