AI Holders Summary · Q1 2026

238 institutions reported ADTN in Q1 2026. BlackRock, Inc. leads at 17.4% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(5 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$99M7.8M0.00%Q1 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$60M4.8M0.00%Q1 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$43M3.4M0.00%Q1 2026 04

ROYCE & ASSOCIATES LP

CIK 0000906304

$39M3.1M0.39%Q1 2026 05

DnB Asset Management AS

CIK 0001456670

$39M3.1M0.14%Q1 2026 06

STATE STREET CORP

CIK 0000093751

$30M2.4M0.00%Q1 2026 07

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK 0001644956

$25M2.0M0.08%Q1 2026 08

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$24M1.9M0.01%Q1 2026 09

MORGAN STANLEY

CIK 0000895421

$23M1.8M0.00%Q1 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$23M1.8M0.00%Q1 2026 11

Divisar Capital Management LLC

CIK 0001645721

$22M1.8M5.67%Q1 2026 12

JPMORGAN CHASE & CO

CIK 0000019617

$19M1.5M0.00%Q1 2026 13

First Eagle Investment Management, LLC

CIK 0001325447

$17M1.4M0.03%Q1 2026 14

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$17M1.3M0.00%Q1 2026 15

SG Americas Securities, LLC

CIK 0001313360

$17M1.3M0.02%Q1 2026 16

Shannon River Fund Management LLC

CIK 0001301050

$15M1.2M2.93%Q1 2026 17

Boston Partners

CIK 0001386060

$15M1.2M0.02%Q1 2026 18

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$14M1.1M0.01%Q1 2026 19

SEI INVESTMENTS CO

CIK 0000350894

$14M1.1M0.01%Q1 2026 20

Assenagon Asset Management S.A.

CIK 0001546007· Quasi-passive

$13M918K0.02%Q2 2026

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