SCHEDULE: Vanguard Group Updates ADTRAN Holdings Ownership

The Vanguard Group has reported a 0% beneficial ownership in ADTRAN Holdings Inc following an internal realignment.

Summary

• The Vanguard Group filed an Amendment No. 18 to its Schedule 13G for ADTRAN Holdings Inc.
• The filing indicates that The Vanguard Group now beneficially owns 0 shares, representing 0% of ADTRAN Holdings Inc's Common Stock.
• This change is a result of an internal realignment within The Vanguard Group, Inc. on January 12, 2026.
• Following the realignment, certain subsidiaries or business divisions of The Vanguard Group, Inc. will report beneficial ownership separately (on a disaggregated basis).
• The Vanguard Group, Inc. no longer has, or is deemed to have, beneficial ownership over securities beneficially owned by these disaggregated subsidiaries.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as neutral. The filing primarily reflects an internal organizational change within The Vanguard Group regarding how its beneficial ownership is reported, rather than a strategic investment decision related to ADTRAN Holdings Inc.

Future Outlook

This filing does not contain any forward-looking statements or guidance related to ADTRAN Holdings Inc's future performance or outlook.

Industry Context

StockSavvy.ai notes that institutional ownership disclosures, particularly from major asset managers like Vanguard, are routinely monitored by the market. This specific filing reflects a procedural change in how Vanguard's holdings are reported due to an internal corporate realignment, rather than a direct investment or divestment decision related to ADTRAN Holdings Inc's fundamentals. Such administrative changes are common among large, complex financial institutions.

Comparison to Industry Standards

• This Schedule 13G/A filing is a standard regulatory disclosure for changes in beneficial ownership by institutional investors and does not contain performance metrics or operational results that would allow for direct comparison to industry standards or specific comparable companies.

Stakeholder Impact

• Shareholders of ADTRAN Holdings Inc should be aware that the reported 0% beneficial ownership by The Vanguard Group is due to an internal reporting realignment, meaning Vanguard's underlying investment funds may still hold shares, but they will now be reported separately by Vanguard's subsidiaries.

Key Dates

Keywords

ADTRAN Holdings Inc, Vanguard Group, Schedule 13G, beneficial ownership, institutional ownership, common stock, realignment