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Business Summary
Filings
Ownership
Valuation
Ownership — ADTN
Institutional Holdings
Insider Transactions
US Institutional Ownership
100.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
7.84M
$108.0M
9.65%
-4.1K
2026-06-30
VANGUARD PORTFOLIO MANAGEMENT LLC
5.14M
$71.0M
6.33%
+364.2K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
3.51M
$48.0M
4.32%
+84.0K
2026-06-30
STATE STREET CORP
3.08M
$42.0M
3.80%
+732.1K
2026-06-30
ROYCE & ASSOCIATES LP
2.97M
$41.0M
3.66%
-154.5K
2026-06-30
UBS Group AG
2.94M
$40.0M
3.62%
+2.69M
2026-06-30
TWO SIGMA INVESTMENTS, LP
2.90M
$40.0M
3.57%
--
2026-06-30
MILLENNIUM MANAGEMENT LLC
2.72M
$37.0M
3.35%
+826.4K
2026-06-30
JPMORGAN CHASE & CO
2.62M
$36.0M
3.23%
+2.19M
2026-06-30
DNB Asset Management AS
2.62M
$36.0M
3.23%
-504.3K
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
1.96M
$27.0M
2.41%
+138.9K
2026-06-30
MORGAN STANLEY
1.79M
$24.0M
2.21%
-40.1K
2026-06-30
RENAISSANCE TECHNOLOGIES LLC
1.77M
$24.0M
2.18%
+1.57M
2026-06-30
Boston Partners
1.65M
$22.0M
2.03%
+469.7K
2026-06-30
Qube Research & Technologies Ltd
1.40M
$19.0M
1.72%
+1.13M
2026-06-30
DIMENSIONAL FUND ADVISORS LP
1.37M
$18.0M
1.68%
+29.2K
2026-06-30
First Eagle Investment Management, LLC
1.25M
$17.0M
1.54%
-120.2K
2026-06-30
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
1.10M
$15.0M
1.35%
-890.5K
2026-06-30
D. E. Shaw & Co., Inc.
1.09M
$15.0M
1.34%
-127.1K
2026-06-30
GOLDMAN SACHS GROUP INC
1.05M
$14.0M
1.29%
+74.3K
2026-06-30
MARSHALL WACE, LLP
1.04M
$14.0M
1.28%
+146.8K
2026-06-30
FMR LLC
1.01M
$14.0M
1.25%
+395.8K
2026-06-30
Assenagon Asset Management S.A.
917.8K
$12.0M
1.13%
+459.8K
2026-06-30
Divisar Capital Management LLC
851.5K
$11.0M
1.05%
-917.9K
2026-06-30
FEDERATED HERMES, INC.
850.0K
$11.0M
1.05%
-72.6K
2026-06-30
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