What's in the KOSPI

Samsung Electronics, SK hynix are 51.3% of KOSPI value on Nov. 3

Half of the 4,488 trillion won in KOSPI common stocks sat in the two largest of 801 companies. Without the top two, the rest of the market lost 2.60% in value on Nov. 3, compared with a loss of 3.60% for all common stocks and a 3.59% fall in the KOSPI index.

Data as of Nov. 3, 2026 · Last updated Nov. 4, 2026, 5:34 p.m. KST

Share of KOSPI common-stock market value on Nov. 3

Samsung Electronics 28.6% SK hynix 22.8% Nos. 3-10 12.5% Other 791 36.2%

Ten largest KOSPI common stocks: share of market value and change on Nov. 3

1. Samsung Electronics28.6%−4.15%
2. SK hynix22.8%−5.03%
3. SK Square2.6%−5.37%
4. Samsung Electro-Mechanics1.8%−7.38%
5. LG Energy Solution1.8%−5.06%
6. Samsung Biologics1.5%+2.11%
7. Hyundai Motor1.3%−3.31%
8. KB Financial Group1.2%−1.30%
9. Samsung Life Insurance1.2%−3.86%
10. Samsung C&T1.1%−2.21%

Session change on Nov. 3

KOSPI index−3.59%
All 801 common stocks−3.60%
Excluding top two−2.60%

Korea's 10 largest companies in dollars

Korea's 10 largest companies were worth $2.14 trillion on Nov. 3, down 2.7% in dollar terms since Oct. 30. Samsung Electronics ranked first at $956.9 billion, 1.3 times the value of No. 2 SK hynix.

The order of the top 10 was the same as on Oct. 30. Over the period the won lost 0.5% against the dollar, which lowered every company's dollar value by the same 0.5%.

Market value in dollars on Nov. 3, change and rank move since Oct. 30
Company	$ value	Change	Rank
1. Samsung Electronics	$956.9B	−2.9%	–
2. SK hynix	$761.5B	−1.9%	–
3. SK Square	$88.4B	−0.3%	–
4. Samsung Electro-Mechanics	$61.5B	−8.1%	–
5. LG Energy Solution	$59.0B	−6.5%	–
6. Samsung Biologics	$50.1B	−2.8%	–
7. Hyundai Motor	$42.1B	−2.1%	–
8. KB Financial Group	$40.0B	−3.1%	–
9. Samsung Life Insurance	$39.0B	−3.8%	–
10. Samsung C&T	$37.4B	−1.3%	–

How to read the chart

Share bar: Share of the market capitalization of KOSPI common stocks on Nov. 3.
Ten largest: Each company's share and the session change of its share price.
Session bars: Green is a gain and red is a loss. The two market figures weight each stock by its market value.
Common stocks: Preferred shares, REITs, depositary receipts and foreign companies are excluded.
Dollar value: Market capitalization of common shares converted at the Bank of Korea's 3:30 p.m. won-dollar close of 1,341.0 won per dollar on Nov. 3 and 1,334.3 on Oct. 30.
Rank: Places moved since Oct. 30. KOSPI and KOSDAQ common shares ranked by market capitalization. One exchange rate per date leaves the order the same as in won.

Shares are of the market capitalization of KOSPI common stocks at the close. Preferred shares, REITs, depositary receipts and foreign companies are excluded, so the figures differ from index weights.
Dollar values divide market capitalization by the Bank of Korea's 3:30 p.m. won-dollar close on each date (1,341.0 won per dollar on Nov. 3 and 1,334.3 on Oct. 30). One rate per date leaves the order the same as in won. The top 10 covers common shares on both the KOSPI and KOSDAQ.