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APH in the 13F filings

Amphenol Corp · CUSIP 032095101

Sector · Technology hardware and equipmentTheme · AI infrastructure and semiconductors· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
41
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 26 listed it in both
Shares listed
228,012,645
combined, among listed positions
Reported value
$28.9bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 25 buyers (opened or added shares) and 22 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -5,154,791.

Managers listing APH in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

41 of 41 holders

ActionFiling
Fidelity (FMR LLC)79,477,521$10.0bn0.53%Trimmed-6,943,27415 May 2026 (the filing on sec.gov)
Capital Research Global Investors26,630,629$3.4bn0.52%Added+10,173,75313 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc26,186,905$3.3bn0.38%Trimmed-11,736,16015 May 2026 (the filing on sec.gov)
Wellington Management Group LLP15,001,671$1.9bn0.35%Added+2,581,66915 May 2026 (the filing on sec.gov)
MFS Investment Management13,964,627$1.8bn0.62%Trimmed-1,948,44914 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP11,884,529$1.5bn0.81%Added+26,17414 May 2026 (the filing on sec.gov)
Invesco Ltd11,777,152$1.5bn0.15%Added+2,826,43012 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd9,458,488$1.2bn0.57%Trimmed-446,13918 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC5,906,177$746m0.57%Trimmed-790,55527 Oct 2026 (the filing on sec.gov)
AQR Capital Management LLC5,649,669$697m0.32%Added+2,061,67915 May 2026 (the filing on sec.gov)
AllianceBernstein LP4,074,952$551m0.18%Trimmed-1,099,36815 May 2026 (the filing on sec.gov)
Egerton Capital UK LLP2,871,353$363m4.03%Trimmed-836,55813 May 2026 (the filing on sec.gov)
Marshall Wace LLP2,337,310$295m0.29%Added+1,845,71715 May 2026 (the filing on sec.gov)
Millennium Management LLC2,320,894$293m0.12%Added+998,49315 May 2026 (the filing on sec.gov)
Man Group PLC1,925,820$243m0.44%Added+46,33415 May 2026 (the filing on sec.gov)
Capital World Investors1,553,787$196munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Jane Street Group LLC1,102,037$139munder 0.1%Added+960,29712 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,036,810$131munder 0.1%Added+412,74515 May 2026 (the filing on sec.gov)
Bridgewater Associates LP863,048$109m0.49%Added+64,68415 May 2026 (the filing on sec.gov)
Tudor Investment Corp613,970$78m0.14%Newnew15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC574,100$73m0.11%Newnew14 May 2026 (the filing on sec.gov)
Woodline Partners LP565,953$72m0.27%Trimmed-617,26615 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC313,709$40m0.06%Trimmed-70,83213 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.311,092$39munder 0.1%Trimmed-48,63215 May 2026 (the filing on sec.gov)
Two Sigma Investments LP290,609$37munder 0.1%Added+178,55315 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (6)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
31 in Q3 2024 to 34 in Q2 2026

Tracked managers listing it, at least.

010203040split2014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
APH by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201310$2.9bnn.a.n.a.
Q3 201311$2.8bnn.a.n.a.
Q4 20137$3.6bnn.a.n.a.
Q1 20148$3.8bnn.a.n.a.
Q2 201410$4.2bnn.a.n.a.
Q3 201412$4.5bnn.a.n.a.
Q4 201411$4.9bnn.a.n.a.
Q1 201512$5.6bnn.a.n.a.
Q2 201513$5.5bnn.a.n.a.
Q3 201514$5.0bnn.a.n.a.
Q4 201512$5.1bnn.a.n.a.
Q1 201613$5.6bnn.a.n.a.
Q2 201613$5.5bnn.a.n.a.
Q3 201611$6.3bnn.a.n.a.
Q4 201614$6.4bnn.a.n.a.
Q1 201711$6.5bnn.a.n.a.
Q2 201714$7.4bnn.a.n.a.
Q3 201711$8.5bnn.a.n.a.
Q4 201714$8.5bnn.a.n.a.
Q1 201815$8.0bnn.a.n.a.
Q2 201815$7.9bnn.a.n.a.
Q3 201815$8.8bnn.a.n.a.
Q4 201815$7.4bnn.a.n.a.
Q1 201917$8.3bnn.a.n.a.
Q2 201918$7.7bnn.a.n.a.
Q3 201914$7.4bnn.a.n.a.
Q4 201918$8.5bnn.a.n.a.
Q1 202018$5.0bnn.a.n.a.
Q2 202018$5.9bnn.a.n.a.
Q3 202023$6.5bnn.a.n.a.
Q4 202020$7.3bnn.a.n.a.
Q1 202118$7.9bnn.a.n.a.
Q2 202119$7.8bnn.a.n.a.
Q3 202114$9.0bnn.a.n.a.
Q4 202112$10.8bnn.a.n.a.
Q1 202222$9.1bnn.a.n.a.
Q2 202221$7.7bnn.a.n.a.
Q3 202219$7.2bnn.a.n.a.
Q4 202218$8.3bnn.a.n.a.
Q1 202317$9.1bnn.a.n.a.
Q2 202318$9.9bnn.a.n.a.
Q3 202317$9.6bnn.a.n.a.
Q4 202316$12.1bn117
Q1 202418$14.1bn117
Q2 2024 (split)30$17.0bn90
Q3 202431$15.9bn1818
Q4 202431$17.5bn1517
Q1 202524$15.4bn1513
Q2 202532$25.2bn2014
Q3 202534$31.4bn1420
Q4 202532$31.3bn1727
Q1 202631$28.5bn2522
Q2 202634$38.7bn2422

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

APH and NVDA →APH and AVGO →APH and MU →Choose a stock to compare with APH →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own APH, latest filings →Back to the 13F Explorer →