SK Group, commonly branded as SK, is one of South Korea’s largest multinational conglomerates, known locally as a chaebol. Headquartered in Seoul, South Korea, the group manages a diverse portfolio spanning semiconductors, telecommunications, energy, chemicals, life sciences, artificial intelligence (AI), and advanced materials. It is currently recognised as the country’s second-largest business group by both assets and revenue, comprising more than 175 affiliated companies and employing over 100,000 people worldwide.1

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SK was established in 1953 as Sunkyong Textile, a manufacturing company founded shortly after the Korean War. The group has since evolved through several key developmental phases:

• 1953: Founded as Sunkyong Textile.
• 1970s: Expanded operations into petrochemicals and energy.
• 1980: Entered the telecommunications sector.
• 1994: Officially adopted the name SK Group.
• 2000s: Pursued international expansion via acquisitions and technology investments.
• 2012: Acquired a controlling stake in SK hynix, establishing itself as a major player in the global semiconductor industry.
• 2020s: Increased investment in AI, electric vehicle (EV) batteries, renewable energy, biotechnology, and advanced semiconductor technologies.2

Semiconductors

SK is a leading global semiconductor entity, primarily operating through SK hynix. Its product portfolio includes memory chips, DRAM, NAND Flash, High Bandwidth Memory (HBM), and AI memory solutions. SK hynix ranks among the world’s largest memory chip manufacturers and serves as a critical supplier for AI computing infrastructure.1

Telecommunications

The group operates SK Telecom, one of South Korea’s largest telecommunications providers. Services encompass mobile communications, 5G networks, AI platforms, cloud computing, data centres, and various digital services.1

Energy

SK’s energy division, anchored by SK Innovation, covers oil refining, petrochemicals, lubricants, battery technology, and renewable energy. In recent years, the company has strategically shifted its focus towards cleaner energy sources and battery manufacturing.1

Electric Vehicle Batteries

Through its subsidiary SK On, SK manufactures lithium-ion batteries for electric vehicles, energy storage systems, and commercial vehicles. The company supplies batteries to major automotive manufacturers globally.1

Life Sciences

SK has made significant investments in the healthcare sector, focusing on pharmaceuticals, biotechnology, vaccine development, contract manufacturing, and drug discovery. Its life sciences businesses serve international pharmaceutical markets.1

Advanced Materials

The group produces a range of specialised materials, including semiconductor materials, industrial gases, specialty chemicals, high-performance materials, and glass substrates for AI chips. These products are essential for semiconductor manufacturing and advanced electronics.1

Prominent affiliates within the SK Group ecosystem include:

• SK Inc.
• SK hynix
• SK Telecom
• SK Innovation
• SK On
• SK E&S
• SK Biopharmaceuticals
• SK Bioscience1

SK maintains an extensive international footprint with operations in South Korea, the United States, China, Japan, Europe, and Southeast Asia. Its overseas activities include semiconductor manufacturing, battery production plants, telecommunications services, AI infrastructure development, and energy investments.1

Research and development efforts at SK are concentrated in areas central to the group’s long-term growth strategy. Key investment fields include artificial intelligence (AI), high-performance computing, advanced semiconductor packaging, EV batteries, renewable energy, hydrogen technologies, biotechnology, and data centres.2

SK adheres to a management framework known as the SK Management System (SKMS). This philosophy emphasises sustainable growth, innovation, social value creation, long-term stakeholder value, and ethical management. Additionally, the company employs a “Double Bottom Line” approach that evaluates performance based on both financial results and social impact.1

The SK logo features an orange-and-red butterfly symbolising innovation, freedom, transformation, sustainable growth, and global connectivity. This emblem has become one of the most recognisable corporate symbols in South Korea.3

SK has increasingly directed resources towards AI infrastructure, high-bandwidth memory (HBM), semiconductor manufacturing, renewable energy, battery technology, data centres, AI cloud services, and advanced materials for next-generation chips. Recent partnerships and investments underscore this strategic emphasis on AI and semiconductor ecosystems.4

SK Group is widely regarded as one of South Korea’s most influential corporations. Alongside other major conglomerates, it has played a pivotal role in the nation’s industrialisation and remains a significant global competitor in the semiconductor, telecommunications, energy, and advanced technology sectors.1

1. Investing In Industries Around The Globe | Learn More | SK
2. [SK Group
3. Building Industries For A Better Tomorrow | SK
4. Nvidia clinches deals with South Korean giants including SK Group to advance AI boom