Top 10 Biggest Tech Companies in Austria by Market Cap

Austria rarely makes headlines in global technology coverage, yet the country quietly punches far above its weight. A nation of just nine million people supplies circuit boards for the world’s most advanced AI processors, sensors for premium smartphones, and the voice-communication systems that air traffic controllers rely on in more than 150 countries. Vienna’s startup scene has produced multiple unicorns, and Styria’s “silicon valley of the Alps” around Graz hosts one of Europe’s densest microelectronics clusters.

So which Austrian technology companies are actually the most valuable? In this guide, we rank the ten biggest tech companies in Austria by market capitalization as of early July 2026, explain what each one does, and unpack what the ranking reveals about the health of the Austrian tech sector. Whether you are an investor screening Vienna Stock Exchange listings, a job seeker researching employers, or simply curious about Europe’s hidden tech champions, this list gives you a verified, up-to-date starting point.

How We Ranked These Companies (Methodology)

Transparency matters when money is involved, so here is exactly how this list was built. We ranked publicly traded companies headquartered in Austria by market capitalization — the share price multiplied by shares outstanding — using data from CompaniesMarketCap, cross-checked against Yahoo Finance, Investing.com, and each company’s own investor relations disclosures in the first week of July 2026. Figures are quoted in US dollars and rounded, because share prices, and therefore valuations, move every trading day.

We define “tech” broadly as information and communication technology: semiconductors, electronics hardware, enterprise software, telecommunications, and digital infrastructure. That means A1 Telekom Austria qualifies, while industrial groups such as Andritz and voestalpine — which brand themselves technology companies but earn their money in plant engineering and steel — do not. Privately held firms like Bitpanda and TTTech are excluded because they have no public market cap, and Austrian-founded companies now headquartered abroad, most notably Dynatrace, are covered separately in the notable mentions section.

The 10 Biggest Tech Companies in Austria at a Glance

Market caps fluctuate daily; treat the figures above as a dated snapshot, not live quotes.

1. A1 Telekom Austria Group — Austria’s ICT Heavyweight

Market cap: ~$7.5 billion

A1 Telekom Austria is the country’s dominant communications provider and, under a broad ICT definition, its most valuable technology company. Headquartered in Vienna and listed on the Vienna Stock Exchange under the ticker TKA, the group runs mobile, fixed-line, broadband, and digital TV networks in Austria and a portfolio of markets across Central and Eastern Europe. Majority-owned by Mexican telecom giant América Móvil, with the Austrian state holding company ÖBAG as anchor shareholder, A1 has evolved well beyond a classic phone company: it operates data centers, sells cloud, cybersecurity, and IoT services to businesses, and has been an early mover in 5G rollout in the region. Its 2023 spin-off of the tower business — now EuroTeleSites, ranked sixth on this list — sharpened its focus on services rather than steel and concrete.

2. AT&S — The AI Boom’s Austrian Winner

Market cap: ~$5.9–6.9 billion (highly volatile)

No Austrian stock tells the story of the AI supercycle better than AT&S (Austria Technologie & Systemtechnik). The Leoben-based company manufactures high-end printed circuit boards and IC substrates — the sophisticated carriers that connect advanced processors to the outside world — with plants in Austria, China, India, and a major new campus in Kulim, Malaysia. Demand from AI servers and data centers has transformed its fortunes: revenue climbed roughly 21% to €1.8 billion in fiscal 2025/26, management guided for 30–35% growth the following year, and the share price traded in an extraordinary 52-week range of about €17 to €246. The company has also announced plans to invest up to €2 billion in expanding its Malaysian operations. Depending on the trading day, AT&S now rivals or exceeds A1 as Austria’s most valuable pure-play tech firm.

3. ams-OSRAM — Sensors and Light from Styria

Market cap: ~$2.3–2.9 billion

Headquartered in Premstätten near Graz, ams-OSRAM is Austria’s semiconductor flagship. Founded in 1981, the company designs optical sensors, LEDs, lasers, and mixed-signal chips used in smartphones, cars, medical devices, and industrial equipment — if your phone dims its screen automatically or your car has adaptive headlights, there is a fair chance Austrian-designed silicon is involved. The 2020 takeover of Germany’s OSRAM created a group with around 18,500 employees and trailing revenue near $3.8 billion, though it also loaded the balance sheet with debt that has weighed on the valuation ever since. The stock trades on the SIX Swiss Exchange rather than in Vienna, but the headquarters, roots, and much of the R&D remain firmly Austrian. Under CEO Aldo Kamper, the group has been restructuring around its core sensing and emitting technologies.

4. Kontron — Europe’s IoT Specialist, Now a Takeover Target

Market cap: ~$1.7 billion

Linz-based Kontron, formerly known as S&T AG, is one of Europe’s leading providers of IoT and embedded computing technology, supplying hardened computers, software, and connectivity for trains, aircraft, factories, energy grids, and defense systems. The company posted record 2024 results — revenue jumped 37% to about €1.69 billion — and guided toward €1.9–2.0 billion for 2025, with growth increasingly driven by its higher-margin software and solutions segment. Kontron made headlines again in May 2026 when Taiwan’s Ennoconn Corporation, a Foxconn-affiliated shareholder, disclosed a potential public takeover bid, putting the Frankfurt-listed Austrian firm at the center of one of Europe’s more interesting tech M&A stories. However that plays out, Kontron’s positioning across rail digitalization and defense electronics gives it rare structural tailwinds.

5. Frequentis — The Company Air Traffic Controllers Trust

Market cap: ~$1.1 billion

Few companies on this list are as invisible to consumers, or as critical to their safety, as Frequentis. Founded in Vienna in 1947 and still majority family-owned, the company builds communication and information systems for control centers where failure is not an option: air traffic control, police and ambulance dispatch, coastal rescue, and railway operations. Its voice communication systems are deployed in over 150 countries, making it a world market leader in its niche. That mission-critical character translates into long contract cycles, sticky customer relationships, and steady growth — qualities that have rewarded the stock since its 2019 IPO on the Vienna and Frankfurt exchanges. With aviation traffic recovering and public-safety digitalization budgets expanding across Europe, Frequentis remains one of Austria’s most quietly durable technology franchises.

6. EuroTeleSites — Digital Infrastructure, Pure and Simple

Market cap: ~$0.9 billion

EuroTeleSites is the youngest company in this ranking, spun off from Telekom Austria in September 2023, yet it owns some of the country’s most strategic digital assets: a portfolio of roughly 13,000 mobile tower sites across Austria and five other Central and Eastern European markets. The business model is straightforward — build, own, and lease antenna locations to mobile network operators under long-term contracts — which produces the predictable, utility-like cash flows investors prize in tower companies worldwide. As 5G densification forces operators to add more sites and more tenants per tower, EuroTeleSites sits on the supply side of that structural demand. It is Vienna-listed under the ticker ETS and represents the “picks and shovels” layer of Austria’s technology economy.

7. Austriacard Holdings — Securing Payments and Identities

Market cap: ~$0.4 billion

Vienna-headquartered Austriacard Holdings operates where physical and digital security meet. The group produces payment cards, smart cards, and secure identity documents, and provides personalization, digitalization, and secure data-management services for banks, governments, and enterprises across Europe and beyond. Formed through the combination of Austria’s Austriacard and Greece’s Inform Lykos, the company is dual-listed on the Vienna and Athens stock exchanges under the ticker ACAG. Its niche is unglamorous but resilient: every issued bank card, ID document, and digitized government record needs a trusted manufacturer and processor behind it, and regulatory demands around security keep barriers to entry high. That makes Austriacard one of the more defensive technology plays on the Vienna market.

8. Zumtobel Group — Lighting as a Technology Business

Market cap: ~$0.17 billion

Based in Dornbirn in Austria’s westernmost province of Vorarlberg, the Zumtobel Group has been turning light into a technology product since 1950. The company develops professional luminaires, lighting management systems, and — through its Tridonic components arm — the LED drivers, modules, and connectivity hardware inside them. Its brands, including Zumtobel and Thorn, illuminate offices, stadiums, museums, and city streets across the world, and the group generates revenue of roughly €1.1 billion a year. The lighting industry’s brutal transition from conventional lamps to smart, connected LED systems has compressed margins and the share price alike, which explains the modest market cap relative to sales. Still, as buildings get smarter and energy efficiency rules tighten, Zumtobel’s controls and connected-lighting expertise keep it relevant.

9. Fabasoft — Linz’s Quiet Cloud Software Champion

Market cap: ~$0.14 billion

Fabasoft is the only pure software company in this top ten, which itself says something about Austria’s public tech markets. Founded in Linz in 1988 by Helmut Fallmann and Leopold Bauernfeind, the company provides cloud-based document management, business process, and compliance software, with a particularly strong franchise in the public sector — large parts of the Austrian and German federal administrations run on its electronic file systems. Its subsidiary Mindbreeze has earned international recognition in AI-powered enterprise search and insight engines, giving the group genuine exposure to the applied-AI wave. Listed in Frankfurt’s Prime Standard, Fabasoft combines founder-led continuity, recurring cloud revenue, and conservative finances — a profile closer to a Swiss watch than a Silicon Valley rocket, and deliberately so.

10. Kapsch TrafficCom — Tolling the World’s Highways

Market cap: ~$0.1 billion

Kapsch TrafficCom rounds out the list with one of the most focused mandates in Austrian tech: making road traffic flow. Part of the Kapsch family group, whose history stretches back to 1892, the Vienna-listed company builds electronic toll collection and intelligent transportation systems used in dozens of countries, from nationwide truck-tolling schemes in Europe to urban congestion management projects. The past years brought painful contract disputes and restructuring that cut the valuation to a fraction of its former size, which is why a genuine world leader in its niche now carries a market cap near $100 million. For contrarian observers, Kapsch is a case study in how project risk can overwhelm technological strength — and in whether a leaner company can rebuild value from here.

Notable Mentions: The Ones That Got Away (or Stayed Private)

Any honest ranking of Austrian tech has to acknowledge what is missing. Dynatrace, the observability software powerhouse founded in Linz in 2005, would sit at or near the very top of this list — but it relocated its headquarters to the United States and trades on the NYSE, so it no longer counts as an Austrian-headquartered company, even though Linz remains its largest engineering hub. Vienna’s fintech unicorn Bitpanda, edtech player GoStudent, and safety-platform specialist TTTech are all substantial technology businesses that stay off this list simply because they are privately held and publish no market capitalization. Their absence is a reminder that public market caps capture only part of a country’s real tech footprint.

What This Ranking Says About Austria’s Tech Sector

Three patterns stand out. First, Austria’s listed tech champions are overwhelmingly hardware and infrastructure businesses — circuit boards, sensors, towers, embedded computers — reflecting the country’s deep industrial engineering tradition rather than a consumer-internet culture. Second, the AI boom is redrawing the map: AT&S’s multi-fold rally on substrate demand shows how quickly a mid-cap supplier can be revalued when it sits in the right spot of the AI hardware chain. Third, software value tends to leak abroad: the biggest Austrian-born software firm lists in New York, and even domestic players like Kontron and Fabasoft chose Frankfurt over Vienna for liquidity. The combined market value of all ten companies — around $20 billion — is smaller than a single mid-tier Nasdaq firm, yet the technological depth per euro of valuation is remarkable.

Frequently Asked Questions

What is the biggest tech company in Austria? Under a broad ICT definition, A1 Telekom Austria leads with a market cap of roughly $7.5 billion as of July 2026. If telecom operators are excluded, chip-substrate maker AT&S is Austria’s most valuable pure technology company — and on strong trading days its valuation has surpassed A1’s.

Is Dynatrace an Austrian company? Dynatrace was founded in Linz, Austria, in 2005 and still develops much of its software there, but it is now headquartered in the United States and listed on the New York Stock Exchange, so it does not appear in Austria-headquartered rankings.

What is the most valuable company in Austria overall? Across all sectors, Erste Group Bank tops the Austrian market at roughly $43 billion, followed by utility Verbund and oil-and-gas group OMV. Technology companies occupy the mid-field of the Vienna Stock Exchange.

Why do the market cap figures in this article differ from what I see today? Market capitalization changes with every price tick and with currency movements between the euro, Swiss franc, and US dollar. All figures here are a snapshot from early July 2026, drawn from CompaniesMarketCap and cross-checked with exchange data.

Are there Austrian tech unicorns not on this list? Yes. Bitpanda, GoStudent, and TTTech are prominent examples of billion-euro-class Austrian tech firms that remain privately held and therefore have no public market cap.

Final Thoughts

Austria’s technology sector will never out-shout Silicon Valley, but it does not need to. Its strengths — precision hardware, safety-critical systems, and infrastructure that the digital economy silently depends on — are exactly the capabilities the AI and connectivity era rewards, as AT&S’s dramatic re-rating proves. For anyone tracking European tech beyond the usual suspects, the ten companies above are the essential starting lineup.

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