SK Group
Chey Tae-won (born December 3, 1960) is a South Korean business magnate. He is the chairman of SK Group, Korea's third largest Chaebol that mainly engages in oil, telecom, semiconductors, and chemical businesses. SK Group controls 143 subsidiaries including SK Telecom, SK Hynix, and SK Innovation through SK Holdings. Chey is well known for the group's SK Hynix merger deal, which eventually becomes the world fourth largest chipmaker followed by Samsung Electronics, Intel, and TSMC. As of 2021, he is the 14th richest person in South Korea with a personal net worth of $3.6 billion. The bulk of his fortune comes from SK Holdings, holding company of SK Group.