Adtran Networks voting rights move, BlackRock crosses 9 percent in SDAX shares

By Thomas Klein, Operations & Strategy desk. Reviewed prior to publication on 2026-06-25, 22:05.

Adtran Networks (DE0005103006) reported a major voting rights notification on Thursday. BlackRock now holds a combined 9.62 percent of voting rights in the SDAX-listed telecommunications equipment provider, according to the latest EQS disclosure.

What the new filing shows

The notification, filed under the German Securities Trading Act (WpHG), states that BlackRock crossed the relevant threshold on 22 June 2026 and informed the market on 25 June 2026 via EQS News. The disclosure covers Adtran Holdings, Inc., the US parent of the German Adtran Networks entity. The EQS voting rights announcement details the threshold crossing and group structure

According to the filing, 6.17 percent of the voting rights are attached to shares, while a further 3.45 percent are held via financial instruments such as securities lending and contracts for difference. In absolute terms this corresponds to 5,024,502 voting rights attached to shares and 2,809,278 voting rights via instruments. A Financial Times corporate announcement reproduces the key figures from the EQS filing

BlackRock’s position in Adtran Networks

The EQS notice attributes 3.07 percent of voting rights to BlackRock Fund Advisors, a US-based asset manager within the BlackRock group. Other portions of the holding are spread across multiple BlackRock entities, including BlackRock Advisors (UK) Limited and BlackRock Asset Management Canada Limited, illustrating the global nature of the shareholder base. The full chain of controlled undertakings is listed in the EQS document

Adtran Networks shares trade in Frankfurt within the SDAX index under the ticker ADV, placing the company among German small caps with international investor interest. The presence of BlackRock as a significant shareholder aligns the stock with a broader universe of European and US-listed telecommunications and networking names such as Nokia and Cisco Systems.

The business behind the shares

Adtran Networks focuses on optical transport and access solutions for broadband networks in Europe, building on technology and platforms from its US parent Adtran Holdings. The group supplies fiber access equipment and network management software to telecommunications carriers and regional operators, supporting broadband rollout and upgrades. A financial data profile on ADTRAN Holdings describes the broader product portfolio in fiber networking and telecommunications

Where the Adtran Networks shares trade today

The Adtran Networks shares (DE0005103006) trade on the Frankfurt Stock Exchange in the SDAX segment under the ticker ADV. As of 2026-06-25, 21:30, the shares are quoted at 12.40 euros on Frankfurt, according to exchange data.

Disclaimer: This article is for informational purposes only and does not constitute investment advice or a recommendation to buy or sell Adtran Networks shares or any other securities.