Stock Ownership/APH

AMPHENOL CORP (APH): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in APH · Information Technology. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
45
13F filers
Aggregate Value
$6.7B
Across holders
Last Price
$155.55
2026-08-24
Sector
Information Technology
GICS
Quarterly fund activity23 increased22 reduced6 exited
Full exits: VOLORIDGE INVESTMENT MANAGEMENT, LLC, Hudson Bay Capital Management LP, LONE PINE CAPITAL LLC, TUDOR INVESTMENT CORP ET AL, CAPSTONE INVESTMENT ADVISORS, LLC, Pinpoint Asset Management Ltd
Institutional Holders of APH
↗
45 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund11.89M$2.1B31.4%0.9%Added+$278KQ2 2026
Egerton Capital (UK) LLP
CIK 0001581811
Hedge Fund4.87M$858.1M12.9%8.3%Added+$351.8MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund4.50M$774.5M11.6%0.3%Reduced+$766.7MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund2.48M$437.3M6.6%0.7%Added+$412.0MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund1.46M$256.7M3.8%0.3%Added+$253.3MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund1.46M$256.7M3.8%0.2%Reduced$-192.9MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund1.42M$250.9M3.8%0.4%Reduced$-63.8MQ2 2026
Select Equity Group, L.P.
CIK 0001592643
Hedge Fund1.25M$220.4M3.3%1.1%Added+$8.8MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund838K$147.8M2.2%0.1%Reduced+$116.9MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund784K$138.2M2.1%0.0%Reduced$-100.8MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$2.1B· 31.4% of total· 0.9% port· 11.89M sh· +$278K QoQ· Q2 2026
Egerton Capital (UK) LLPAdded
Hedge Fund
$858.1M· 12.9% of total· 8.3% port· 4.87M sh· +$351.8M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$774.5M· 11.6% of total· 0.3% port· 4.50M sh· +$766.7M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$437.3M· 6.6% of total· 0.7% port· 2.48M sh· +$412.0M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$256.7M· 3.8% of total· 0.3% port· 1.46M sh· +$253.3M QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$256.7M· 3.8% of total· 0.2% port· 1.46M sh· $-192.9M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$250.9M· 3.8% of total· 0.4% port· 1.42M sh· $-63.8M QoQ· Q2 2026
Select Equity Group, L.P.Added
Hedge Fund
$220.4M· 3.3% of total· 1.1% port· 1.25M sh· +$8.8M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$147.8M· 2.2% of total· 0.1% port· 838K sh· +$116.9M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$138.2M· 2.1% of total· 0.0% port· 784K sh· $-100.8M QoQ· Q2 2026
SANDS CAPITAL MANAGEMENT, LLCReduced
Institutional Manager
$134.7M· 2.0% of total· 0.5% port· 764K sh· $-7.3M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$130.7M· 2.0% of total· 0.1% port· 741K sh· +$121.7M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$123.9M· 1.9% of total· 0.2% port· 703K sh· $-430.1M QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$123.0M· 1.8% of total· 0.5% port· 698K sh· $-29.2M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$109.1M· 1.6% of total· 0.1% port· 619K sh· +$91.6M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$84.7M· 1.3% of total· 0.3% port· 480K sh· +$83.9M QoQ· Q2 2026
AXIOM INVESTORS LLC /DEReduced
Hedge Fund
$67.6M· 1.0% of total· 0.6% port· 384K sh· $-684.8M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$65.6M· 1.0% of total· 0.0% port· 372K sh· $-8.5M QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDReduced
Hedge Fund
$53.3M· 0.8% of total· 0.3% port· 323K sh· $-8.3M QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$45.2M· 0.7% of total· 0.1% port· 256K sh· $-38.5M QoQ· Q2 2026
Woodline Partners LPReduced
Hedge Fund
$43.4M· 0.7% of total· 0.1% port· 246K sh· $-56.4M QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$36.1M· 0.5% of total· 0.2% port· 204K sh· +$35.8M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$27.1M· 0.4% of total· 0.0% port· 153K sh· $-21.9M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$26.8M· 0.4% of total· 0.0% port· 152K sh· $-74.4M QoQ· Q2 2026
PineBridge Investments, L.P.Added
Hedge Fund
$25.5M· 0.4% of total· 0.2% port· 206K sh· +$191K QoQ· Q3 2025
FRED ALGER MANAGEMENT, LLCReduced
Hedge Fund
$23.0M· 0.3% of total· 0.1% port· 130K sh· $-5.6M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$19.3M· 0.3% of total· 0.0% port· 109K sh· $-202.9M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$13.6M· 0.2% of total· 0.0% port· 77K sh· $-37.6M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$12.6M· 0.2% of total· 0.0% port· 72K sh· +$6.2M QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$11.8M· 0.2% of total· 0.2% port· 67K sh· +$10.8M QoQ· Q2 2026
Verition Fund Management LLCReduced
Hedge Fund
$10.6M· 0.2% of total· 0.1% port· 60K sh· $-13.4M QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$8.3M· 0.1% of total· 0.1% port· 47K sh· $-571K QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$7.8M· 0.1% of total· 0.1% port· 44K sh· +$95K QoQ· Q2 2026
Fulcrum Asset Management LLPReduced
Hedge Fund
$7.5M· 0.1% of total· 0.8% port· 45K sh· $-1.3M QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$5.7M· 0.1% of total· 0.2% port· 33K sh· +$2.1M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$5.7M· 0.1% of total· 0.0% port· 33K sh· +$15K QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$2.3M· 0.0% of total· 0.0% port· 13K sh· +$134K QoQ· Q2 2026
Parallax Volatility Advisers, L.P.Added
Hedge Fund
$2.0M· 0.0% of total· 0.0% port· 11K sh· +$1.6M QoQ· Q2 2026
Fisher Asset Management, LLCAdded
Institutional Manager
$1.4M· 0.0% of total· 0.0% port· 8K sh· +$370K QoQ· Q2 2026
MAVERICK CAPITAL LTDAdded
Hedge Fund
$1.1M· 0.0% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
Bridgewater Advisors Inc.Reduced
Hedge Fund
$1.0M· 0.0% of total· 0.1% port· 6K sh· $-7K QoQ· Q2 2026
Ancora Advisors, LLCAdded
Hedge Fund
$975K· 0.0% of total· 0.0% port· 6K sh· +$611K QoQ· Q2 2026
Rokos Capital Management LLPAdded
Hedge Fund
$302K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Magnetar Financial LLCReduced
Hedge Fund
$283K· 0.0% of total· 0.0% port· 2K sh· $-189K QoQ· Q2 2026
Alphadyne Asset Management LPReduced
Hedge Fund
$218K· 0.0% of total· 0.0% port· 1K sh· $-3.1M QoQ· Q2 2026
1–10 of 45
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