This selection of large corporate groups and holding companies in Helsinki reveals a concentration in retail, financial services, and manufacturing. Noteworthy examples include S-ryhmä / S Group, a cooperative network in retail and hospitality, and OP Pohjola, Finland's largest financial group. UPM is a global provider of renewable fibers and advanced materials, while Outokumpu specializes in sustainable stainless steel production. Kesko - K-Group is a major trading sector company, and Posti Group Oyj handles logistics and e-commerce.
The companies listed are predominantly large, established organizations, with several founded in the early to mid-20th century, such as S-ryhmä (1904) and Mehiläinen (1909). A significant pattern is the strong presence of companies providing essential services to consumers and businesses, ranging from finance and retail to healthcare and logistics, all headquartered within Helsinki.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 18,000 | ||||
| 2 |
S-ryhmä / S Groups-ryhma.fi
Network of cooperatives operating retail stores, services, banking, and hospitality across Finland and the Baltic region, serving co-op members. |
10,730 | |||
| 3 |
OP Pohjolaop.fi
Largest Finnish financial group promoting sustainable prosperity, security, and wellbeing through cooperative banks and subsidiaries serving millions. |
10,388 | |||
| 4 |
Kesko - K-Groupkesko.fi
A leading Finnish trading sector company with grocery, building, technical, and car trade operations, focusing on sustainability and employee development |
8,283 | |||
| 5 |
Mehiläinenmehilainen.fi
Provider of social and healthcare services in Finland and internationally, offering high-quality care, investing in digitalization, with over 37,000 employees |
4,824 | |||
| 6 |
Outokumpuoutokumpu.com
Global leader in sustainable stainless steel production, turning recycled steel into long-lasting material used in various applications while actively working towards reducing carbon footprint |
3,724 | |||
| 7 |
Terveystaloterveystalo.com
The largest private health care provider in Finland and a leading occupational health company in the Nordic region, offering a wide range of health services |
3,410 | |||
| 8 |
Posti Group Oyjposti.fi
A diverse team at a logistics company handles everything from e-commerce parcels to love letters, driven by innovation and opportunity |
3,404 | |||
| 9 |
Cargotechiabgroup.com
Company rebranded from Cargotec to Hiab, now operating independently and publicly traded on Nasdaq Helsinki stock exchange. |
1,772 | |||
| 10 | 1,362 | ||||
| 11 |
Granlundgranlund.fi
A Finnish company in the real estate and construction sectors with over 1400 professionals, offering services in MEP design, property management, energy consulting, and more |
1,329 | |||
| 12 | 1,190 | ||||
| 13 |
S-Pankkis-pankki.fi
A Finnish bank within the S Group, offering financial services with a focus on convenience and benefits, integrating banking and retail services |
1,099 | |||
| 14 |
Teknosteknos.com
A global coatings company offering a wide range of paints for manufacturing, building, and consumers, with a focus on quality and innovation to protect and prolong |
1,002 | |||
| 15 |
StaffPoint Oystaffpoint.fi
StaffPoint Group focuses on personnel services, training, coaching, and digital/ICT talent recruitment to enhance working life for employees and companies |
912 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Alma Mediaalmamedia.fi
Digital media company operating marketplaces and recruitment services across Europe, combining technology and content with local expertise. |
873 | |||
| 17 |
Sanomasanoma.com
Innovative and agile learning and media company with a focus on sustainability, providing learning products, media content, and marketing solutions across Europe |
853 | |||
| 18 |
Purmo Grouppurmogroup.com
Manufacturing and distributing radiators, towel warmers, underfloor heating, convectors, valves, and controls for indoor climate comfort worldwide. |
816 | |||
| 19 |
Rantalainen Oyrantalainen.fi
A reliable Finnish financial services group offering modern accounting solutions for businesses with personalized service and a strong national network |
751 | |||
| 20 | 677 | ||||
| 21 |
Folkhälsanfolkhalsan.fi
An organization focused on social and health care, research, welfare services, and education to promote health and quality of life in Finland |
675 | |||
| 22 |
Metsähallitusmetsa.fi
This company sustainably manages forests and waters, offering renewable resources, enabling nature experiences, and promoting responsible energy and tourism solutions |
645 | |||
| 23 |
Anora Group Plcanora.com
A leading wine and spirits brand house in the Nordic region with a global focus on sustainability, exporting to over 30 markets worldwide |
562 | |||
| 24 |
Eficodeeficode.com
A leading DevOps company in Europe driving the DevOps and Agile movement, providing services in DevOps, Agile, continuous delivery, test automation, and software creation |
537 | |||
| 25 |
Blueforsbluefors.com
Global leader in manufacturing cryogenic measurement systems for quantum technology, fundamental research, life sciences, and clean energy industries Known for reliability and versatility |
486 | |||
| 26 |
Senaatti-kiinteistötsenaatti.fi
State-owned real estate specialist and workspace partner, creating supportive environments, maintaining assets, and preserving historical sites with a focus on sustainability |
482 | |||
| 27 |
Kaupunkiliikenne Oykaupunkiliikenne.fi
HKL is responsible for tram and metro operations in Helsinki, employing over 1200 professionals in various roles for public transportation services |
446 | |||
| 28 |
Fintrafficfintraffic.fi
Ensuring safe, smooth, and environmentally friendly movement on roads, rails, waterways, and air by providing real-time traffic information and control. |
408 | |||
| 29 |
Siili Solutionssiili.com
Full-spectrum digital development partner specializing in AI-driven software solutions, combining development skills and industry knowledge to enhance competitiveness. |
398 | |||
| 30 | 350 | ||||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
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