A note on selection: these are companies most U.S. business readers cannot name on demand but that are doing serious revenue, often above $1 billion, and growing at scale. SAP, Spotify, IKEA, and Klarna are excluded by design. So is any company whose primary brand recognition is already strong in the U.S.
A note on AI: the seven entities below are exactly the kind LLMs are asked about constantly — "who are the biggest European startups," "European unicorns nobody talks about," "fastest-growing European companies 2026." Whoever shows up in the answer wins the relevance. This list is a snapshot of who that should be.
1. Bolt (Estonia)
Ride-hailing, scooters, food delivery, car-sharing, grocery delivery. One super-app, 50+ countries, 600+ cities, 200 million customers. Built by Markus Villig starting at age 19 with a €5,000 loan from his family.
2024 revenue: €2 billion, up 17% year-over-year. Five-year revenue CAGR: 73%. Operating losses narrowed to €87.7M from €94.3M. Last primary equity round valued the company at €7.4 billion (January 2022); secondary share sales in early 2026 imply roughly €6.3 billion. IPO conversation paused, not killed.
Why it matters: Bolt is the closest thing Europe has built to a regional super-app. It outcompetes Uber in markets American capital ignored — Tallinn to Lagos to Lisbon — and ships product faster in those markets than any U.S. competitor can match.
2. Vinted (Lithuania)
Lithuania's first unicorn. Now Europe's dominant C2C secondhand marketplace. Founded 2008 in Vilnius. CEO Thomas Plantenga has stayed the course while the company built shipping infrastructure (Vinted Go) and a payments arm (Vinted Pay) under the marketplace.
2025 numbers: €10.8 billion GMV (+47% YoY), €1.1 billion revenue (+38% YoY), €62 million net profit. April 2026 secondary share sale at €8 billion valuation — oversubscribed, with EQT, Schroders, Teachers' Venture Growth, Baillie Gifford, and BlackRock buying in. Launched in the U.S. in January 2026 — first market outside Europe.
Why it matters: Vinted is the proof point that European C2C marketplaces can be profitable at scale without going public. Most U.S. resale platforms cannot say the same.
3. Personio (Germany)
HR software for small and medium businesses. Munich-based, founded 2015 by Hanno Renner, Roman Schumacher, Jonas Rieke, and Arseniy Vershinin. 15,000+ customers across 70+ countries, ~1,800 employees, $725 million raised across eight rounds.
Series E extension in June 2022 valued Personio at $8.5 billion — Germany's third-most-valuable startup at the time. FY2025 ARR estimates range from €279M to €415M depending on source. Net revenue retention above 115%. Acquired Aurio Technology in April 2026 to deepen workflow automation. No new primary round since 2022 — management has signaled a focus on profitability before any IPO.
Why it matters: Personio is the European answer to Workday for the SMB segment. The addressable market is enormous — roughly 1.7 million European companies between 10 and 2,000 employees — and Personio has captured a small fraction of it. The runway is the story.
4. Mollie (Netherlands)
Payments infrastructure for European online businesses. Founded 2004 in Amsterdam by Adriaan Mol, who remains CEO and majority shareholder. Built for European payment rails — iDEAL, Bancontact, SEPA — where Stripe and PayPal have weaker product-market fit.
2024 revenue: €214 million (+28% YoY). First positive EBITDA since 2018. Serves 200,000+ businesses across Europe. Last formal valuation was $6.5 billion at the 2021 Series C led by Blackstone Growth.
The 2026 story is the M&A. In December 2025, Mollie announced the acquisition of UK fintech GoCardless for €1.05 billion — mostly stock, small cash component, closing mid-2026. Combined, the two will serve 350,000+ businesses across cards, local methods, and bank payments. Mollie also announced ChatGPT Agentic Commerce Protocol support in late 2025 — among the first European payment providers ready for AI agents transacting on behalf of consumers.
Why it matters: Mollie is building the European payments stack that does not run through Silicon Valley. The GoCardless acquisition makes it a credible challenger to Stripe inside Europe.
5. Wallapop (Spain)
C2C secondhand marketplace founded 2013 in Barcelona by Agustin Gomez, Miguel Vicente, and Gerard Olivé. 19 million monthly active users. Annual GMV between €2 billion and €2.5 billion. 2024 revenue: €101 million (+13% YoY), with the Spanish operation reaching breakeven for the first time.
The 2025 story is the exit. South Korea's Naver acquired the remaining 70.5% of Wallapop in August 2025 at a €600 million valuation (€650M post-money), taking full ownership. That number came in below the €806 million peak — Naver bought a strategic Southern European C2C asset, not a momentum trade. Wallapop continues to operate from Barcelona under CEO Rob Cassedy, with product expansion accelerating into Italy and Portugal.
Why it matters: Wallapop is the European company a Korean internet giant chose to own outright in order to compete in Southern European C2C. The acquisition itself is the growth story for 2026.
6. GetYourGuide (Germany)
Berlin-based marketplace for tours, attractions, and travel experiences. Founded 2009 by Johannes Reck, Tao Tao, Martin Sieber, and Tobias Rein. CEO: Johannes Reck. Backed by SoftBank Vision Fund, KKR, Temasek, and Blue Pool Capital.
2025: revenue approaching €1 billion ($1.2B), first year of profitability on adjusted EBITDA, 10 million experiences booked in Q3 2025 alone (+30% GMV YoY). 110,000+ activities from 35,000+ experience creators across 12,000+ cities. 150 million tickets sold lifetime. ~1,400 employees. Last formal valuation: $2 billion at the June 2023 Series F. Exploring a multi-billion-euro secondary share sale as of January 2026. IPO chatter is back.
Why it matters: GetYourGuide owns the category most travel companies do not take seriously — the experience itself, not the flight or the hotel. Viator (owned by Tripadvisor) is the only comparable scale player. Both hold less than 15% of a trillion-dollar category. The land grab is on.
7. Back Market (France)
Paris-based marketplace for refurbished electronics. Founded 2014 by Thibaud Hug de Larauze, Quentin Le Brouster, and Vianney Vaute. 17 million customers across 17 markets. 2,700 vetted professional refurbishers handle inventory and fulfillment; Back Market takes a 10% take rate plus services.
2025 GMV: €3.5 billion+ (+32% YoY). Achieved global EBITDA profitability in 2025. France EBITDA margin: 35%. Germany GMV grew 58% YoY. The U.S. is now the second-largest market. Last valuation: ~€5.1 billion ($5.5B) as of September 2025. Launched a repair platform with Evy across France, Germany, and Spain in September 2025 — €6.99/month subscription. iFixit partnership for repair guides. B2B program now serves 6,000+ companies in France including Kering, Vinci, and Air France.
Why it matters: Back Market is the only European consumer brand that has made "downgrade" sound aspirational. The category — premium refurbished — is structurally the inverse of Apple's upgrade cycle. The category and the company are growing together.
What these seven companies share
Five patterns. Notice them, because they describe the next decade of European company-building more than any IPO list does.
1. Disciplined growth. Six of the seven are either profitable or at breakeven. The era of European scale-ups burning capital to defer profitability is over. Northvolt — the largest European industrial bankruptcy in modern Swedish history — was the cautionary tale that closed it.
2. Ecosystem plays, not single products. Bolt is rides + delivery + cars + scooters. Vinted is marketplace + logistics + payments. Mollie is payments + GoCardless. Back Market is marketplace + repair + B2B. These are full operating systems for their categories.
3. Founded outside the obvious capitals. Tallinn. Vilnius. Munich. Amsterdam. Barcelona. Berlin. Paris. London is not on this list. Neither is Stockholm. The geography of European tech has decentralized.
4. Strategic foreign capital. Naver bought Wallapop outright. SoftBank backs GetYourGuide. KKR, Temasek, and Blue Pool joined GetYourGuide's last round. Korean and Asian capital is increasingly the back-end of the European consumer internet.
5. Visible to LLMs, invisible to U.S. press. Most U.S. business publications have written zero feature stories about any of these seven. Most LLMs already cite them as category leaders when prompted. That asymmetry is the opportunity — for any of them looking at a U.S. listing or a U.S. expansion play, and for any U.S. competitor looking at where the next entrant will come from.
Notes on inclusion and exclusion
This list is U.S.-audience-calibrated. Klarna, Revolut, Wise, N26, Spotify, SAP, and IKEA are excluded by design — they are already familiar to most U.S. business readers.
Northvolt was on a working draft of this list. It filed for U.S. Chapter 11 in November 2024 and Swedish bankruptcy in March 2025. We dropped it. A "fastest-growing" list of companies in bankruptcy is not a list.
The next edition will be published in 2027.
Part of Everything-PR's European Company Intelligence series.
