Founded more than 60 years ago, SK Holdings has 87 affiliates and core businesses in energy, telecommunications and semiconductors. In 2015, its revenue was $112 billion. It is expanding its global presence and employs over 81,000 people, including 16,000 people in some 260 global affiliates/branches worldwide. It has 16 companies listed on the Korea Exchange (KOSPI and KOSDAQ), including: SK Holdings, SK Innovation, SK Telecom, SK Networks, SK Chemical, SKC, SK Securities, SK Gas and SK Hynix.