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ADTN in the 13F filings

ADTRAN Holdings Inc · CUSIP 00486H105

Sector · Technology hardware and equipment
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
30
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 3 listed it in both
Shares listed
17,256,165
combined, among listed positions
Reported value
$240m
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: 15 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,586,674.

Managers listing ADTN in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

30 of 30 holders

ActionFiling
Two Sigma Investments LP2,896,353$40munder 0.1%Added+1,772,82914 Aug 2026 (the filing on sec.gov)
Millennium Management LLC2,722,820$38munder 0.1%Added+826,40914 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,773,740$25munder 0.1%Added+1,570,84113 Aug 2026 (the filing on sec.gov)
First Eagle Investment Management LLC1,248,507$17munder 0.1%Trimmed-120,2005 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,091,898$15munder 0.1%Trimmed-127,07114 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP1,038,292$14munder 0.1%Added+146,77213 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,011,195$14munder 0.1%Added+395,75913 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP786,873$11munder 0.1%Added+331,22613 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP764,780$11munder 0.1%Added+200,00014 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC671,403$9.3munder 0.1%Trimmed-172,52114 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC617,388$8.6munder 0.1%Trimmed-270,57414 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp541,455$7.5munder 0.1%Trimmed-113,48814 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC281,868$3.9munder 0.1%Added+180,37914 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC275,489$3.8munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC247,014$3.4munder 0.1%Added+99,30813 Aug 2026 (the filing on sec.gov)
Invesco Ltd236,765$3.3munder 0.1%Trimmed-754,22914 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP140,133$1.9munder 0.1%Added+26,08414 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc138,630$1.9munder 0.1%Added+15,92314 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP124,994$1.7munder 0.1%Trimmed-19,22014 Aug 2026 (the filing on sec.gov)
MFS Investment Management109,674$1.5munder 0.1%Added+42,0393 Aug 2026 (the filing on sec.gov)
Man Group PLC102,762$1.4munder 0.1%Added+48,59114 Aug 2026 (the filing on sec.gov)
Polen Capital Management LLC70,292$977kunder 0.1%Trimmed-5,3964 Aug 2026 (the filing on sec.gov)
Caxton Associates LLP67,169$934kunder 0.1%Added+42,67214 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP67,427$848kunder 0.1%Trimmed-100,49314 Aug 2026 (the filing on sec.gov)
PDT Partners LLC53,641$746kunder 0.1%Held014 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 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 (1)

Exited (4)

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.
1 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

01234Q3 2022Q1 2023Q3 2023Q1 2024Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ADTN by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20223$33mn.a.n.a.
Q4 20222$37mn.a.n.a.
Q1 20232$36mn.a.n.a.
Q2 20233$23mn.a.n.a.
Q3 20232$11mn.a.n.a.
Q4 20233$9.6m12
Q1 20244$3.5m21
Q2 20243$4.4m20
Q3 20241$5.9m10
Q4 20243$24m30
Q1 20252$11m11
Q2 20252$11m02
Q3 20253$20m30
Q4 20251$11m1816
Q1 20263$19m2212
Q2 20264$20m1517

Compare with…

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

ADTN and AAPL →ADTN and SNDK →ADTN and CSCO →Choose a stock to compare with ADTN →

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 ADTN, latest filings →Back to the 13F Explorer →