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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
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
33
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
13,669,491
combined, among listed positions
Reported value
$171m
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: 22 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,024,043.

Managers listing ADTN 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.

33 of 33 holders

ActionFiling
Millennium Management LLC1,896,411$24munder 0.1%Trimmed-798,38915 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC1,368,707$17munder 0.1%Added+133,50014 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,218,969$15munder 0.1%Added+20,19615 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,123,524$14munder 0.1%Added+1,052,99115 May 2026 (the filing on sec.gov)
Invesco Ltd990,994$12munder 0.1%Added+744,18512 May 2026 (the filing on sec.gov)
Marshall Wace LLP891,520$11munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC887,962$11munder 0.1%Added+90,52215 May 2026 (the filing on sec.gov)
AQR Capital Management LLC843,924$11munder 0.1%Added+607,01215 May 2026 (the filing on sec.gov)
Tudor Investment Corp654,943$8.2munder 0.1%Trimmed-292,56515 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)615,436$7.7munder 0.1%Added+417,55815 May 2026 (the filing on sec.gov)
Point72 Asset Management LP564,780$7.1munder 0.1%Added+143,39415 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP455,647$5.7munder 0.1%Added+171,14514 May 2026 (the filing on sec.gov)
Citadel Advisors LLC393,734$5.0munder 0.1%Added+295,33915 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP259,916$3.3munder 0.1%Added+47,99914 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC202,899$2.6munder 0.1%Trimmed-48,94114 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC147,706$1.9munder 0.1%Added+58,65213 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP144,214$1.8munder 0.1%Added+23,20015 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc122,707$1.5munder 0.1%Added+13,98015 May 2026 (the filing on sec.gov)
AllianceBernstein LP167,920$1.5munder 0.1%Trimmed-128,31115 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP114,049$1.4munder 0.1%Trimmed-3,06415 May 2026 (the filing on sec.gov)
Jane Street Group LLC101,489$1.3munder 0.1%Trimmed-242,45812 May 2026 (the filing on sec.gov)
Polen Capital Management LLC75,688$952kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)
MFS Investment Management67,635$851kunder 0.1%Trimmed-1,79614 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC66,132$832kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP56,800$715kunder 0.1%Added+45,98913 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 (5)

Exited (2)

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 →