KOSPI Rockets Higher on Shareholder Returns and Semiconductor Supply Outlook

The KOSPI surged 4.44% to 6,627.19, while the KOSDAQ nudged up 0.28% to 860.28, reflecting strong buying across large‑cap technology and construction names. The Korean won held near 1,417 per dollar as investors priced in bullish expectations for memory supply and corporate shareholder‑return policies.

SamsungElectronics (005930) +7.52%

SamsungElectronics chart

Price now₩257,500
Prev close₩239,500
Change+7.52%
Mkt cap₩1,505.4T
P/E39.23
P/B4.02
EPS₩6,564
ROE19.16%
Debt ratio30.15%
52W range₩67,500–374,500

Analyst consensus — 22 ratings, last 180 days · avg target ₩492,500

Buy22
Hold0
Sell0

Samsung Electronics jumped 7.52% after analysts highlighted its aggressive shareholder‑return program, which lifted investor confidence and triggered a fresh price re‑valuation [4][6]. At the same time, a projected memory‑chip shortage lasting to 2028 bolstered the fundamentals of its memory division, supporting the rally [2][5]. Market commentary also noted that Samsung’s return intensity outpaces SK Hynix, creating a perceived "temperature difference" that further attracted buyers [1].

SK hynix (000660) +6.81%

SK hynix chart

Price now₩1,524,000
Prev close₩1,425,000
Change+6.95%
Mkt cap₩1,113.3T
P/E25.85
P/B8.87
EPS₩58,955
ROE61.16%
Debt ratio35.56%
52W range₩245,000–2,987,000

Analyst consensus — 22 ratings, last 180 days · avg target ₩3,347,727

Buy22
Hold0
Sell0

SK Hynix rose 6.81% as a U.S. investment house publicly urged investors to favor SK Hynix over Micron, sparking optimism despite a domestic price dip [7][8]. Analysts also linked the stock’s divergence from Samsung to differing shareholder‑return policies, reinforcing the view that SK Hynix’s payout stance is less aggressive [9]. Additionally, a theme‑sector investment report lifted both SK Hynix and Samsung, adding further buying pressure [10].

SKSQUARE (402340) +9.63%

SKSQUARE chart

Price now₩1,036,000
Prev close₩945,000
Change+9.63%
Mkt cap₩136.7T
P/E15.59
P/B4.94
EPS₩66,468
ROE55.09%
Debt ratio7.50%
52W range₩130,900–2,189,000

Analyst consensus — 5 ratings, last 180 days · avg target ₩2,040,000

Buy5
Hold0
Sell0

SK Square surged 9.63% on expectations of its August 19 earnings release and a rebound in SK Hynix, which investors see as a catalyst for the subsidiary’s performance [13]. Foreign investors continued net buying, adding to the upward momentum [17]. A sharp intraday rally on August 12, where the stock jumped 6.45%, reinforced bullish sentiment and attracted additional demand [18].

LGELECTRONICS (066570) +12.27%

LGELECTRONICS chart

Price now₩204,500
Prev close₩181,700
Change+12.55%
Mkt cap₩33.3T
P/E38.43
P/B1.54
EPS₩5,321
ROE4.11%
Debt ratio133.33%
52W range₩72,000–438,000

Analyst consensus — 20 ratings, last 180 days · avg target ₩213,250

Buy20
Hold0
Sell0

LG Electronics rallied 12.27% after market participants priced in anticipation of a meeting with NVIDIA CEO Jensen Huang, a catalyst that lifted the stock into the low‑13% gain range [19]. Technical buying near the 190,000‑won level added a 2%‑plus lift as traders attempted to break through that resistance [21]. The activation of a “VI” event later in the session propelled the price past the 200,000‑won mark, completing the surge [23].

KUMHOE&C (002990) +29.94%

KUMHOE&C chart

Price now₩14,930
Prev close₩11,490
Change+29.94%
Mkt cap₩556B
P/E8.71
P/B2.18
EPS₩1,715
ROE31.93%
Debt ratio551.07%
52W range₩3,200–19,380

Kumho Engineering & Construction surged 29.94% on hopes that a new semiconductor industrial complex in Honam will boost regional demand for construction services [25][30]. Investors also priced in expected benefits from the government‑backed "Mega‑Project" and the related special law, which are seen as tailwinds for the firm’s pipeline [28][29]. The broader rally in construction stocks, including Hyundai and Daewoo, added further lift to Kumho’s share price [26].

Sources

  1. 삼성전자·SK하이닉스, 엇갈린 주가 흐름 이유는…주주환원 '온도차' — 더팩트 · 2026-08-10
  2. [모닝 리포트] "삼성전자 주가 조정 끝자락, 메모리 부족 2028년까지" — 뉴스핌 · 2026-08-11
  3. 삼성전자, ‘확신의 매수 구간’...주주환원 10배 이상 늘어난다 — v.daum.net · 2026-08-09
  4. KB증권 "삼성전자, 대규모 주주환원.. 주가 재평가의 신호탄" — 글로벌이코노믹 · 2026-08-10
  5. KB증권, 삼성전자 주가 조정 마무리 및 반등 전망 — 2news.co.kr · 2026-08-12
  6. KB증권 "삼성전자, 확신의 매수 구간…목표주가 60만원 유지" — 이코노미스트 · 2026-08-10
  7. 미 투자지 "마이크론 말고 SK하이닉스 사라" 호평인데… 한국선 왜 주가 빠지나 — 조선일보 · 2026-08-11
  8. “마이크론 말고 SK하이닉스 사라” 美 투자지 추천에도…한국선 주가 빠지는 이유 — 전자신문 · 2026-08-11
  9. 삼성전자·SK하이닉스, 엇갈린 주가 흐름 이유는…주주환원 '온도차' — 더팩트 · 2026-08-10
  10. 테마섹의 투자 보도에 삼성전자·SK하이닉스 주가 급등 — Investing.com 한국어 · 2026-08-12
  11. [논단]SK하이닉스 1주가 쏘아올린 830억원짜리 나비효과 — v.daum.net · 2026-08-12
  12. SK스퀘어 주가 전망, 8월 19일 실적발표, SK하이닉스 주가 반등을 기다리자 — 네이버 프리미엄콘텐츠 · 2026-08-10
  13. SK스퀘어 주가 전망, 8월 19일 실적발표, SK하이닉스 주가 반등을 기다리자 — 네이버 프리미엄콘텐츠 · 2026-08-10
  14. SK스퀘어 주가, 8월 10일 장중 942,000원 0.32% 상승 — 톱스타뉴스 · 2026-08-10
  15. 주가 뛰자 담보대출도 늘었다…SK하이닉스 438%, SK스퀘어 1765% 폭증 — 뉴시스 · 2026-08-11
  16. SK스퀘어 주가 보합권…장중 90만1000원 찍고 94만9000원 회복 — 잡포스트 · 2026-08-11
  17. 10일, 외국인 거래소에서 SK스퀘어(+1.06%), 현대차(+3.16%) 등 순매수 — 씽크풀 AI · 2026-08-11
  18. SK스퀘어 주가, 8월 12일 장중 1,006,000원 6.45% 상승 — 톱스타뉴스 · 2026-08-12
  19. LG전자 주가 장중 13%대 올라, '젠슨황 회동' 기대감 반영 — 비즈니스포스트 · 2026-08-12
  20. LG전자 주가, 8월 10일 장중 187,800원 1.51% 상승 — 톱스타뉴스 · 2026-08-10
  21. LG전자 주가 2%대 상승…19만원선 돌파 시도 — 잡포스트 · 2026-08-10
  22. LG전자 주가 상승 중 — 아시아뉴스통신 · 2026-08-12
  23. [속보] LG전자 VI 발동, 주가 급등…20만원선 회복 — CBC뉴스 · 2026-08-12
  24. LG전자 주가, 급등세... 이유는? — 금강일보 · 2026-08-12
  25. 금호건설 주가 장중 상한가, 호남 반도체 산업단지 기대에 금호전기도 상한가 — 비즈니스포스트 · 2026-08-11
  26. 금호건설 주가 상한가 직행…건설주 동반 강세, 현대건설·대우건설도 상승 — CBC뉴스 · 2026-08-11
  27. 금호건설 주가, 급등세... 왜? — 금강일보 · 2026-08-11
  28. [특징주] 금호건설, 메가프로젝트 추진 수혜 기대에 ‘상한가’ — 소년한국일보 · 2026-08-11
  29. 금호건설 주가 상한가…1만1490원, ‘메가특구특별법’ 추진 기대에 매수세 집중 — 잡포스트 · 2026-08-11
  30. [급등락주 짚어보기] 호남 반도체 클러스터 기대에 금호건설株 ‘上’…NHN은 실적 랠리 — 이투데이 · 2026-08-11

This is market commentary, not investment advice.