Institutional Ownership
Adtran Holdings Inc
CUSIP 00486H105COMADTNQ1 2026
13D / 13G Filings
24
Schedule 13D/13G on record
Beneficial Filers
9
Distinct reporting persons
Largest Stake
17.7%
Max % of class reported
Institutional Holders
217
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
24 filings · latest Nov 14, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Nov 14, 2025 | Divisar Capital Management LLC | 13G/A | 4.0% | 3.21M | SEC |
| 2 | Aug 14, 2025 | Divisar Capital Management LLC | 13G/A | 5.3% | 4.23M | SEC |
| 3 | Jul 7, 2025 | The Vanguard Group | 13G/A | 10.2% | 8.17M | SEC |
| 4 | May 15, 2025 | Divisar Partners Qp, L.P. | 13G/A | 4.3% | 3.43M | SEC |
| 5 | May 9, 2025 | William Blair Investment Management, LLC | 13G/A | 4.2% | 3.35M | SEC |
| 6 | Apr 23, 2025 | Dnb Asset Management As | 13G/A | 4.4% | 3.55M | SEC |
| 7 | Mar 6, 2025 | Egora Ventures AG (F/K/A Egora Holding Gmbh) | 13G | 6.7% | 5.36M | SEC |
| 8 | Feb 14, 2025 | Divisar Capital Management LLC | 13G/A | 6.1% | 4.81M | SEC |
| 9 | Nov 14, 2024 | Divisar Capital Management LLC | 13G/A | 7.7% | 6.08M | SEC |
| 10 | Nov 14, 2024 | William Blair Investment Management, LLC | 13G/A | 6.2% | 4.87M | SEC |
14 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Adtran Holdings Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 7.84M | $98.63M |
| 2 | Royce & Associates LP | 3.13M | $39.34M |
| 3 | Dnb Asset Management As | 3.12M | $39.30M |
| 4 | State Street Corp | 2.35M | $29.57M |
| 5 | William Blair Investment Management, LLC | 1.99M | $25.03M |
| 6 | Millennium Management LLC | 1.90M | $23.86M |
| 7 | Morgan Stanley | 1.83M | $23.06M |
| 8 | Geode Capital Management, LLC | 1.82M | $22.89M |
| 9 | Divisar Capital Management LLC | 1.77M | $22.26M |
| 10 | Jpmorgan Chase & Co | 1.52M | $18.51M |