AT&S joins the STOXX Europe 600

As part of its latest quarterly review of European benchmark indices, STOXX Ltd. has announced changes to the composition of the STOXX Europe 600, with AT&S now part of the index. The adjustments will take effect at the opening of trading on June 22, 2026.

Leoben, June 18, 2026 – The STOXX Europe 600 comprises 600 large-, mid-, and small-cap listed companies from 17 European countries and is regarded as a key benchmark for international investors. The latest review led to a reshuffle of the index, with several companies leaving and new constituents joining the widely followed European benchmark. Among the new additions is AT&S, which will now be included in the STOXX Europe 600.

“The inclusion of AT&S in the STOXX Europe 600 is a strong signal from the capital markets and a milestone for our company,” says AT&S CEO Michael Mertin. “It demonstrates that our strategic positioning in the field of high-performance computing and AI infrastructure is gaining increasing international visibility. Particularly in an industry that is currently strongly shaped by Asian players, we are especially pleased that a European technology and innovation leader like AT&S is attracting greater attention from global investors. The developments of recent quarters confirm that the market recognizes our long-term potential.”

Validation of financial performance

The inclusion is also seen as validation from a financial perspective: “Being included in the STOXX Europe 600 is also a confirmation of AT&S’ operational and financial performance over the past months,” says Gerrit Steen, CFO of AT&S AG. “The increased visibility among international investors enhances our access to capital markets and underscores AT&S’ relevance within the European technology landscape. The capital market increasingly acknowledges the important role AT&S plays along the value chain of artificial intelligence and high-performance computing. We therefore see the inclusion in the STOXX Europe 600 not only as recognition of our past achievements but also as momentum for our continued growth trajectory.”

With its regular reviews, STOXX ensures that the index accurately reflects developments in European capital markets. The inclusion of AT&S also highlights the growing importance of technology companies within the European index landscape.

AT&S Austria Technologie & Systemtechnik Aktiengesellschaft – Advanced Technologies & Solutions
AT&S is a global technology company and leading manufacturer of high-end IC substrates and complex printed circuit boards. AT&S develops and produces leading-edge interconnect technologies for key digital industries: AI infrastructure, high-performance computing, mobile devices, automotive, aerospace, industrial and medical technology. With production sites in Austria (Leoben, Fehring), China (Shanghai, Chongqing), Malaysia (Kulim), India (Nanjangud) and a European competence center for R&D and IC substrate production in Leoben, AT&S is actively shaping the digital transformation – through forward-looking investments in research and development and the responsible use of resources. The company currently employs around 15,000 people.

Media download: You can find more resources in the AT&S media portal: https://ats.canto.de/v/press