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Chey family/SK group

The group is chaired by Chey Tae-won, son of founder Chey John-hyun. SK began life as a textile spinning company before branching out into such diverse fields as oil refining and communications. SK Telecom is South Korea's largest mobile carrier, while SK Hynix is one of the world's leading producers of memory chips.

Major listed companies

Headquarters location

Business category

Market capitalization (in million dollars)

SK Holdings 

SOUTH KOREA

Technology Services

14,380

SK Hynix

SOUTH KOREA

Electronic Technology

26,340

SK Innovation

SOUTH KOREA

Energy Minerals

12,251

SK Telecom 

SOUTH KOREA

Communications

15,499

Busan City Gas

SOUTH KOREA

Utilities

324

As of Nov. 25

Source: QUICK-FactSet, Nikkei Asian Review

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