Top 10 Biggest Tech Companies in Greece by Market Cap

Greece is rarely the first country that comes to mind when investors think of European technology, yet the Athens Stock Exchange (ATHEX) is now home to a surprisingly dynamic cluster of telecom, software, fintech, and gaming-technology companies. A decade after the country’s debt crisis, the Greek tech ecosystem has been transformed by EU-backed venture funding, an ambitious national digitization program, and a wave of corporate deal-making — including one €2.7 billion acquisition that reshaped the top of this ranking almost overnight.

In this guide, we rank the ten biggest publicly listed technology companies in Greece by market capitalization, based on Athens Stock Exchange data as of mid-2026. For each company, you’ll find what it does, why it matters, and the key numbers behind its valuation. We close with notable mentions, our methodology, and answers to the questions readers ask most.

Important note: Market capitalizations fluctuate daily with share prices. The figures below are approximate values compiled from exchange and financial-data sources in the first half of 2026 and are provided for informational purposes only — not as investment advice.

Greece’s Tech Sector at a Glance

Before the rankings, some context. Greece’s startup ecosystem now counts more than 300 active startups and has been growing at roughly 12% annually, a trajectory kick-started in 2018 when over €260 million from the European Investment Fund and private investors flowed into Greek venture capital. On the public-market side, the picture is barbell-shaped: one telecom giant (OTE Group) and one newly enlarged gaming-technology group (Bally’s Intralot) tower over a long tail of mid-cap and small-cap software, IT-services, and hardware firms. Consolidation has also thinned the ranks — well-known software names like Epsilon Net and Entersoft were taken private in recent years, removing two of the sector’s fastest growers from the exchange.

Quick Comparison Table

1. OTE Group (Hellenic Telecommunications Organization) — ~€7.4 Billion

The undisputed heavyweight of Greek technology is OTE Group, the country’s largest telecommunications and IT company and one of the three most valuable companies on the entire Athens Stock Exchange. With a market capitalization hovering around €7.4 billion in 2026, OTE is worth more than the rest of this list combined — several times over.

Founded in 1949 and majority-owned by Germany’s Deutsche Telekom (which holds roughly 56%), OTE operates under the well-known COSMOTE brand. Its portfolio spans fixed-line and mobile telephony, fiber broadband, pay television, and a rapidly expanding ICT services arm that delivers cloud, data-center, and digital-transformation projects for enterprises and the Greek public sector. The group generates annual revenues of well over €3 billion and employs close to 10,000 people across Greece and Romania.

Why does a telecom company lead a tech ranking? Because in Greece — as in most European markets — the national telecom operator is also the country’s largest ICT integrator, its biggest investor in fiber and 5G infrastructure, and a central player in government digitization contracts. For investors seeking liquid, dividend-paying exposure to Greek technology, OTE is the default choice, with a dividend yield of roughly 4.8% and an active share buyback program.

2. Bally’s Intralot — ~€2.1 Billion

The most dramatic story on this list belongs to Bally’s Intralot. For decades, Intralot was known as a mid-sized Greek supplier of lottery systems and gaming technology to state lotteries around the world. That changed in October 2025, when the company completed a transformational €2.7 billion acquisition of Bally’s Corporation’s International Interactive business — a cash-and-shares deal that made NYSE-listed Bally’s the majority shareholder (with roughly 58%) and instantly turned the Athens-listed group into a global iGaming and lottery leader with projected annual revenues above €1 billion.

The market responded emphatically. Bally’s Intralot’s market capitalization surged to approximately €2.08 billion by mid-2026, up more than 220% year-on-year, making it one of the largest companies on the Athens Stock Exchange. The combined group pairs Intralot’s LotosX and PlayerX lottery platforms and long-standing B2G relationships across 40 jurisdictions with Bally’s proven online casino and digital gaming brands, particularly strong in the UK market.

The company reported 34.8% revenue growth for FY2025 and guided to around €420–440 million in adjusted EBITDA for 2026. Risks remain — notably increased UK gambling taxation — but as a pure-play bet on gaming technology, nothing else on ATHEX comes close.

3. Quest Holdings — ~€750 Million

If OTE is Greece’s telecom champion, Quest Holdings is its IT champion. Founded in 1981 and headquartered in Athens, Quest is a diversified technology group whose subsidiaries touch nearly every corner of the Greek digital economy. Info Quest Technologies is a leading distributor of IT products (including Apple and Xiaomi devices), Uni Systems delivers large-scale IT solutions to banks, governments, and EU institutions across Europe, and iSquare manages Apple product distribution in Greece and Cyprus. The group also operates ACS, one of Greece’s largest courier networks, and a growing renewable-energy portfolio.

With trailing twelve-month revenues of roughly €1.5 billion, more than 3,400 employees, and a market capitalization around €750–760 million in mid-2026, Quest is the largest “pure” IT company on the Athens Exchange. Analysts have historically viewed the stock favorably, and it offers a dividend yield north of 4.5% — unusual for a technology company, and a reflection of the group’s mature, cash-generative business model.

4. Ideal Holdings — ~€300 Million

Ideal Holdings (ATHEX: INTEK) has quietly become one of the most interesting vehicles for investing in Greek technology. Structured as a listed holding and private-equity-style investment company, Ideal owns a portfolio of businesses concentrated in high-growth digital niches: cybersecurity services, fintech and payments, IT solutions, and specialty consumer segments. Its technology arm includes well-regarded Greek cybersecurity and software businesses serving banks, enterprises, and the public sector.

With a market capitalization of roughly €300 million and a track record of disciplined acquisitions and profitable exits, Ideal offers something rare on ATHEX: diversified, actively managed exposure to multiple Greek tech sub-sectors in a single share. Revenue growth in the mid-20% range in recent periods has kept investor interest high.

5. Austriacard Holdings — ~€260–300 Million

Austriacard Holdings is a genuinely bi-national story: an Austrian-Greek digital security group, dual-listed in Athens and Vienna, with deep Greek roots through the Inform Lykos printing and information-management business. The company manufactures smart cards, payment cards, and secure identity documents, and provides digital payment technology and secure information management to banks, governments, and enterprises across more than 20 countries.

With around 2,300–2,400 employees and a market capitalization that climbed from roughly €236 million in early 2026 toward €300 million by spring, Austriacard sits at the intersection of two durable trends: the digitization of payments and rising demand for secure identity and data solutions in Europe. Its share price rose strongly through the first half of 2026 on the back of solid earnings momentum.

6. Profile Software — ~€180 Million

Founded in 1990, Profile Software is arguably Greece’s most successful software exporter. The Athens-based company develops banking and investment-management platforms sold to financial institutions across Europe, the Middle East, Asia, Africa, and the Americas, with offices in London, Geneva, Dubai, Singapore, and Nicosia. Flagship products include the Finuevo core and digital banking suite, the Axia wealth-management platform, and Acumen.plus for treasury and capital markets.

Profile’s numbers explain its premium valuation: 2025 revenue grew about 18.5% to €47.5 million with profit margins around 20%, and the stock has delivered a three-year return above 160%. At a market capitalization of roughly €180 million, Profile is small by international fintech standards but punches far above its weight — a genuine “hidden champion” of Greek software.

7. Performance Technologies — ~€100 Million

Performance Technologies provides IT infrastructure, cloud, cybersecurity, and managed services to enterprises and public-sector organizations in Greece. As Greek businesses accelerate cloud adoption — supported in part by EU Recovery Fund digitization money — Performance has ridden the wave, with its share price up roughly 35% year-on-year and its market capitalization crossing the €100 million mark in 2026. The company’s move from the alternative market to the main market of the Athens Exchange in recent years signaled its graduation into the ranks of Greece’s established mid-cap tech firms.

8. Space Hellas — ~€48 Million

A veteran of the Greek ICT scene, Space Hellas has been active since 1985 as a systems integrator and digital-services provider specializing in telecommunications, IT security, defense, and mission-critical networks. Headquartered in Athens with a footprint across Southeast Europe, the company serves large enterprises, armed forces, and government bodies. Its market capitalization of approximately €47–48 million in mid-2026 — up nearly 29% year-on-year — reflects steady demand for integration and security work, plus investor interest in its stake in AI and software ventures such as SingularLogic (co-owned with a partner).

9. Intertech — ~€11 Million

Intertech is a long-established distributor of technology and consumer-electronics products in Greece, historically known as the local distributor for Panasonic. While modest in size, with a market capitalization around €11 million, the company has been repositioning toward broader technology distribution and services. Its shares posted double-digit gains over the past year, and it remains one of the small caps that round out the listed Greek tech universe.

10. Optronics Technologies — ~€8 Million

The smallest company in our ranking, Optronics Technologies, operates in one of the most specialized niches: fiber optics, optoelectronics, and laser applications. As Greece expands its fiber-to-the-home networks and data-center capacity, demand for optical-networking expertise has grown, and Optronics’ share price surged more than 50% over the past year to give it a market capitalization of roughly €8 million. It is a micro-cap with corresponding risks, but its positioning in optical infrastructure makes it a name worth knowing.

Notable Mentions: The Ones Beyond the List

A ranking based on ATHEX market capitalization inevitably misses part of the picture. Real Consulting, a fast-growing SAP and digital-transformation specialist listed on the alternative market, has become a significant player in enterprise software services. Epsilon Net and Entersoft, two of Greece’s best-performing software stocks of the early 2020s, were both acquired and delisted, illustrating how attractive Greek software assets have become to strategic buyers. And some of the most valuable Greek tech companies are private: payments fintech Viva.com (backed by J.P. Morgan), certification leader PeopleCert, price-comparison and e-commerce platform Skroutz, and insurtech Hellas Direct would all rank highly if they ever listed in Athens.

Methodology: How We Ranked These Companies

This ranking includes companies listed on the Athens Stock Exchange whose primary business is technology in the broad sense — telecommunications, software, IT services and distribution, digital security, gaming technology, and optoelectronics. Market capitalization figures were compiled from Athens Stock Exchange data and established financial-data providers (including Investing.com, Simply Wall St, and Stock Analysis) during the first half of 2026, cross-checked across multiple sources. Because share prices move daily and the euro values shown are rounded approximations, treat the figures as indicative of relative scale rather than precise valuations. Companies headquartered abroad but primarily listed and operationally rooted in Greece (such as Austriacard) were included; delisted companies were not.

Frequently Asked Questions

What is the biggest tech company in Greece? OTE Group (Hellenic Telecommunications Organization) is the biggest, with a market capitalization of around €7.4 billion in 2026. It is also one of the three largest companies on the Athens Stock Exchange overall.

Which Greek tech stock grew the most recently? Bally’s Intralot saw the most dramatic re-rating, with its market cap rising over 220% year-on-year to about €2.1 billion following the completion of its €2.7 billion acquisition of Bally’s International Interactive business in October 2025.

Are there Greek tech unicorns? Yes — but mostly off-exchange. Private companies such as Viva.com and PeopleCert have achieved billion-euro-plus valuations, while listed Greek tech remains dominated by OTE and Bally’s Intralot.

Can international investors buy Greek tech stocks? Yes. All companies in this list trade on the Athens Stock Exchange (part of the Euronext family since 2024’s integration efforts), and OTE also trades in London and Frankfurt. Most international brokers offer ATHEX access, though liquidity in the smaller names can be thin.

Is this list investment advice? No. This article is for informational and educational purposes only. Market caps change constantly, small caps carry elevated risk, and you should consult a licensed financial advisor and verify current figures before making any investment decision.

Final Thoughts

The Greek tech landscape in 2026 tells a story of transformation: a former state telecom monopoly reborn as a fiber-and-cloud powerhouse, a mid-tier lottery supplier catapulted into the global iGaming elite, and a supporting cast of software and IT firms growing steadily on the back of Europe’s digitization push. The gap between the giants and the small caps remains wide — but with EU recovery funds still flowing, private tech champions waiting in the wings, and international acquirers circling Greek software assets, this top 10 is likely to look very different again in just a few years.

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Seema M

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