DOSSIER · 13F Holders · Q2 2026Technology · Telephone & Telegraph Apparatus
ADTN

ADTRAN HOLDINGS INC

254 institutions still hold ADTRAN HOLDINGS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 00486H105·Telephone & Telegraph Apparatus·254 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$714M
visible holders
Holders
254
filers reporting
Concentration
15.25%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

254 institutions reported ADTN in Q2 2026. BlackRock, Inc. leads at 15.3% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$109M7.8M0.00%Q2 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$71M5.1M0.00%Q2 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$49M3.5M0.00%Q2 2026
04
STATE STREET CORP
CIK 0000093751
$43M3.1M0.00%Q2 2026
05
ROYCE & ASSOCIATES LP
CIK 0000906304
$41M3.0M0.33%Q2 2026
06
UBS Group AG
CIK 0001610520
$41M2.9M0.01%Q2 2026
07
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$40M2.9M0.03%Q2 2026
08
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$38M2.7M0.01%Q2 2026
09
DnB Asset Management AS
CIK 0001456670
$36M2.6M0.10%Q2 2026
10
JPMORGAN CHASE & CO
CIK 0000019617
$36M2.6M0.00%Q2 2026
11
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$27M2.0M0.00%Q2 2026
12
MORGAN STANLEY
CIK 0000895421
$25M1.8M0.00%Q2 2026
13
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$25M1.8M0.03%Q2 2026
14
Boston Partners
CIK 0001386060
$23M1.7M0.02%Q2 2026
15
Divisar Capital Management LLC
CIK 0001645721
$22M1.8M5.67%Q1 2026
16
Qube Research & Technologies Ltd
CIK 0001729829
$19M1.4M0.02%Q2 2026
17
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$19M1.4M0.00%Q2 2026
18
First Eagle Investment Management, LLC
CIK 0001325447
$17M1.2M0.03%Q2 2026
19
SG Americas Securities, LLC
CIK 0001313360
$17M1.3M0.02%Q1 2026
20
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 0001644956
$15M1.1M0.05%Q2 2026
Page 1 of 13
234 more holders available. Log in →
Insiders at ADTRAN HOLDINGS INC
Glingener ChristophStanton Thomas RSanto Timothy PWilson James Denson JrTheodosopoulos NikosDopfer UlrichMccray Gregory JamesWalker Kathryn A