WhichIndex

Largest companies in South Korea

We track 1 South Korea stock index (KOSPI), covering 825 companies.

Largest South Korea companies by market cap

Market caps from each exchange's listings, converted to US dollars at the same day's exchange rates, as of 2026-10-09.

The largest South Korea companies among those we track
#CompanyMarket capIndexes
1Samsung Electronics Co., Ltd.$1.05 trillion1
2SK hynix Inc.$700.9 billion2
3SK Square Co., Ltd.$76.4 billion1
4LG Energy Solution, Ltd.$66.2 billion1
5Samsung Electro-Mechanics Co., Ltd.$63.7 billion1
6Hyundai Motor Company$56.9 billion1
7Samsung Biologics Co.,Ltd.$51.0 billion1
8KB Financial Group Inc$39.0 billion2
9Samsung C&T Corporation$36.0 billion1
10Samsung Life Insurance Co., Ltd.$33.4 billion1
11Celltrion, Inc.$32.7 billion1
12Kia Corporation$30.8 billion1
13Shinhan Financial Group Co Ltd$30.4 billion2
14Hanwha Aerospace Co., Ltd.$29.5 billion1
15Samsung SDI Co., Ltd.$28.7 billion1
16Doosan Enerbility Co., Ltd.$27.8 billion1
17HD Hyundai Heavy Industries Co., Ltd.$22.9 billion1
18Hana Financial Group Inc.$22.6 billion1
19Hyundai Mobis Co.,Ltd$21.8 billion1
20LG Electronics Inc.$21.1 billion1
21NAVER Corporation$19.7 billion1
22SK Inc.$19.1 billion1
23Samsung Fire & Marine Insurance Co., Ltd.$19.1 billion1
24SK Innovation Co., Ltd.$17.6 billion1
25LS ELECTRIC Co., Ltd.$17.2 billion1
26Woori Financial Group Inc.$16.2 billion2
27HMM Co.,Ltd$16.0 billion1
28Posco Holdings Inc.$15.4 billion2
29Meritz Financial Group Inc.$15.2 billion1
30KT&G Corporation$14.8 billion1
31Korea Electric Power Corporation$13.4 billion2
32LG Chem, Ltd.$13.3 billion1
33HANMI Semiconductor Co., Ltd.$13.2 billion1
34Hyosung Heavy Industries Corporation$13.0 billion1
35Korea Zinc Company, Ltd.$13.0 billion1
36HD Korea Shipbuilding & Offshore Engineering Co., Ltd.$13.0 billion1
37Samsung SDS Co., Ltd.$12.4 billion1
38Hanwha Ocean Co., Ltd.$12.2 billion1
39HD Hyundai Electric Co., Ltd.$12.1 billion1
40SK Telecom Co., Ltd.$11.6 billion2
41Doosan Corporation$11.6 billion1
42Industrial Bank of Korea$11.5 billion1
43LG Corp.$11.5 billion1
44S-Oil Corporation$11.2 billion1
45Samsung Heavy Industries Co., Ltd.$10.5 billion1
46Posco Future M Co., Ltd.$10.5 billion1
47Mirae Asset Securities Co., Ltd.$10.4 billion1
48Hyundai Glovis Co., Ltd.$10.0 billion1
49Kakao Corp.$9.9 billion1
50Hanwha Systems Co., Ltd.$9.0 billion1
51Samsung E&A Co., Ltd.$8.8 billion1
52DB Insurance Co., Ltd.$8.2 billion1
53KT Corporation$8.2 billion2
54APR Co., Ltd.$8.0 billion1
55Hyundai Engineering & Construction Co.,Ltd.$7.7 billion1
56Korea Aerospace Industries, Ltd.$7.2 billion1
57LIG Defense&Aerospace Co., Ltd.$7.1 billion1
58KakaoBank Corp.$7.1 billion1
59HD Hyundai Co., Ltd.$7.0 billion1
60Korean Airlines Co.,Ltd.$7.0 billion1
61NH Investment & Securities Co., Ltd.$6.6 billion1
62LG Innotek Co., Ltd.$6.6 billion1
63Amorepacific Corporation$6.5 billion1
64Hyundai Rotem Company$6.5 billion1
65Hyundai Autoever Corporation$6.5 billion1
66Korea Investment Holdings Co., Ltd.$6.4 billion1
67Posco International Corporation$6.4 billion1
68Samyang Foods Co., Ltd.$6.3 billion1
69Hanjin Kal$6.1 billion1
70KRAFTON, Inc.$6.0 billion1
71HD Hyundai Marine Solution CO.,LTD.$5.7 billion1
72GS Holdings Corp.$5.6 billion1
73HYBE Co., Ltd.$5.6 billion1
74COWAY Co., Ltd.$5.5 billion1
75LG CNS Co., Ltd.$5.4 billion1
76Hankook Tire & Technology Co., Ltd.$5.4 billion1
77Samsung Securities Co.,Ltd.$5.1 billion1
78DAEDUCK ELECTRONICS Co., Ltd.$4.7 billion1
79ISU Petasys Co., Ltd.$4.6 billion1
80Hanwha Corporation$4.6 billion1
81Yuhan Corporation$4.6 billion1
82Hanwha Solutions Corporation$4.5 billion1
83SK Biopharmaceuticals Co., Ltd.$4.5 billion1
84Daewoo Engineering & Construction Co., Ltd.$4.4 billion1
85LS Corp.$4.3 billion1
86Kiwoom Securities Co., Ltd.$4.2 billion1
87Sanil Electric Co., Ltd.$3.7 billion1
88Doosan Bobcat Inc.$3.5 billion1
89Hanmi Pharm. Co., Ltd.$3.4 billion1
90ORION Corp.$3.4 billion1
91JB Financial Group Co., Ltd.$3.4 billion1
92Kakao Pay Corp.$3.4 billion1
93Samsung Card Co., Ltd.$3.3 billion1
94LG H&H Co., Ltd.$3.3 billion1
95Taihan Cable & Solution Co., Ltd.$3.0 billion1
96DB HiTek CO., LTD.$3.0 billion1
97NC Corporation$3.0 billion1
98CJ Corporation$2.9 billion1
99HD Construction Equipment Co., Ltd.$2.9 billion1
100SKC Co., Ltd.$2.9 billion1

Indexes

Companies in the most indexes

South Korea companies by number of index memberships
CompanyIndexesMember of
KB Financial Group Inc2KOSPI, NYSE Composite
KT Corporation2KOSPI, NYSE Composite
Korea Electric Power Corporation2NYSE Composite, KOSPI
LG Display Co, Ltd AMERICAN DEPOSITORY SHARES2KOSPI, NYSE Composite
Posco Holdings Inc.2KOSPI, NYSE Composite
SK Telecom Co., Ltd.2KOSPI, NYSE Composite
SK hynix Inc.2KOSPI, Nasdaq Composite
Shinhan Financial Group Co Ltd2KOSPI, NYSE Composite
Woori Financial Group Inc.2KOSPI, NYSE Composite
AJ Networks Co.,Ltd.1KOSPI
AJUSTEEL Co.,Ltd1KOSPI
AK Holdings, Inc.1KOSPI
AMOREPACIFIC Holdings Corp.1KOSPI
APR Co., Ltd.1KOSPI
ASIA Holdings CO., Ltd.1KOSPI
AUK Corp.1KOSPI
Able C&C Co., Ltd.1KOSPI
Aekyung Industrial Co., Ltd.1KOSPI
Aekyungchemical Co., Ltd.1KOSPI
Air Busan Co., Ltd.1KOSPI

Where South Korea sits on the map

Lit tiles are the South Korea indexes we track.

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