KOSPI Gains 1.5% on Broad Rally as Samsung SDI Leads

South Korean markets posted a strong rally on August 27, with the KOSPI closing at 6,912.37, up 1.53%, and the KOSDAQ at 837.65, up 1.30%. Broad foreign buying—135.4 billion won in KOSPI and 88.4 billion won in KOSDAQ—supported the gains, while the won held steady at 1,383.12 per dollar.

SAMSUNG SDI CO.,LTD. (006400) +10.27%

SAMSUNG SDI CO.,LTD. chart

Price now₩569,000
Prev close₩516,000
Change+10.27%
Mkt cap₩45.9T
P/E-68.35
P/B2.09
EPS₩-8,325
ROE0.17%
Debt ratio77.45%
52W range₩196,800–723,000

Analyst consensus — 22 ratings, last 180 days · avg target ₩717,364

Buy21
Hold1
Sell0

Samsung SDI surged 10.27% after announcing a large divestiture of its stake in Samsung Display, raising 4‑4.5 trillion won in cash and expanding its investment capacity, which lifted the stock 7‑8% intraday. The move was reinforced by positive fundamentals in ESS and AI‑battery demand despite a weak EV market, and the stock outperformed a 6% decline in Samsung Electronics, underscoring its relative strength.

LS ELECTRIC (010120) +8.93%

LS ELECTRIC chart

Price now₩219,500
Prev close₩201,500
Change+8.93%
Mkt cap₩32.9T
P/E114.86
P/B15.77
EPS₩1,911
ROE19.31%
Debt ratio172.12%
52W range₩148,000–907,000

Analyst consensus — 15 ratings, last 180 days · avg target ₩293,000

Buy15
Hold0
Sell0

LS Electric rose 8.93% as a sizable new contract pushed the share into the 200,000‑won range, delivering a 3%‑plus gain at the close. Simultaneous net buying by both foreign and institutional investors added a further 5.46% intraday boost. While headlines noted the company’s three‑stage distribution‑transmission technology, the immediate price driver was the contract news and strong order flow.

SIMMTECH Co., Ltd. (222800) +12.60%

SIMMTECH Co., Ltd. chart

Price now₩126,900
Prev close₩112,700
Change+12.60%
Mkt cap₩4.8T
P/E-25.61
P/B8.23
EPS₩-4,955
ROE-9.33%
Debt ratio183.10%
52W range₩24,000–164,200

Analyst consensus — 10 ratings, last 180 days · avg target ₩163,500

Buy10
Hold0
Sell0

SimMtech jumped 12.60% after analysts raised its target price to 190,000 won, citing the expansion of its SOCAMM production line and the expected growth of the SOCAMM market. The company also announced a 270‑billion‑won facility investment, which, while potentially dilutive in the short term, was viewed as a growth catalyst. The exact trigger for the sudden spike remains unclear from the headlines.

HYOSUNG HEAVY INDUSTRIES (298040) +10.08%

HYOSUNG HEAVY INDUSTRIES chart

Price now₩3,079,000
Prev close₩2,797,000
Change+10.08%
Mkt cap₩28.7T
P/E55.22
P/B12.19
EPS₩55,755
ROE25.34%
Debt ratio213.51%
52W range₩1,185,000–4,742,000

Analyst consensus — 14 ratings, last 180 days · avg target ₩4,304,286

Buy14
Hold0
Sell0

Hyosung Heavy Industries climbed 10.08% following a securities‑firm note that its power‑transmission segment is “doing what it does best,” raising earnings expectations. The firm’s strategy targeting U.S. power‑grid and AI‑data‑center demand added to the optimism, while a recent U.S. ban on foreign‑made power equipment was seen as benefiting domestic players like Hyosung, further boosting sentiment.

HD HYUNDAI ELECTRIC (267260) +12.01%

HD HYUNDAI ELECTRIC chart

Price now₩821,000
Prev close₩733,000
Change+12.01%
Mkt cap₩29.6T
P/E40.4
P/B14.57
EPS₩20,324
ROE43.70%
Debt ratio143.18%
52W range₩484,000–1,430,000

Analyst consensus — 15 ratings, last 180 days · avg target ₩1,224,333

Buy15
Hold0
Sell0

HD Hyundai Electric surged 12.01% after U.S. restrictions on Chinese power‑equipment imports sparked a domestic demand surge, lifting the stock about 7% intraday. Anticipation of expanding U.S. orders and a “buy‑the‑dip” call from SK Securities added momentum, while a newly disclosed trillion‑won contract with a major tech firm and a target price of 1.5 million won from Korea Investment reinforced bullish sentiment.

Sources

  1. 삼성SDI 주가 장중 8%대 올라, 삼성디스플레이 보유지분 팔아 4조 실탄 확보 — 비즈니스포스트 · 2026-08-27
  2. [특징주] 삼성SDI, 4.5조원 SDC 주식 처분.. 5%대 '강세' — 글로벌이코노믹 · 2026-08-27
  3. [특징주] '삼성D 지분 매각' 삼성SDI, 8%↑…이차전지주도 강세 — 연합뉴스 · 2026-08-24
  4. [ET특징주] 삼성SDI, 삼성디스플레이 지분 매각 발표…주가 7%↑ — 전자신문 · 2026-08-24
  5. 삼성전자 주가 6% 빠지는데…삼성SDI 나홀로 8% 급등 [종목Pick] — 헤럴드경제 · 2026-08-24
  6. 삼성SDI, 주가 반등에 수급 양호...EV 부진 딛고 ESS·AI 수요 확대 — 증권일보 · 2026-08-26
  7. LS ELECTRIC 주가, 8월 26일 장중 197,900원 1.28% 상승 — 톱스타뉴스 · 2026-08-26
  8. [장중수급포착] LS ELECTRIC, 외국인/기관 동시 순매수… 주가 +5.46% — 뉴스핌 · 2026-08-27
  9. LS ELECTRIC 주가, 8월 25일 장중 186,500원 3.02% 하락 — 톱스타뉴스 · 2026-08-25
  10. LS ELECTRIC, 대규모 계약에 3%대 강세 마감…20만원대 안착 : 기업주식정보 — 재경일보 · 2026-08-26
  11. LS ELECTRIC 주가, 8월 24일 장중 191,900원 2.62% 상승 — 톱스타뉴스 · 2026-08-24
  12. LS ELECTRIC, 배전·송전, 교류→직류 '삼단구조'에 단납기 강점까지-SK — 인포스탁데일리 · 2026-08-23
  13. 목표주가 19만원 심텍, SOCAMM 증설에 승부수 — 중기이코노미 · 2026-08-26
  14. 심텍 주가, 갑작스런 급등세... 무슨 회사길래? — 금강일보 · 2026-08-24
  15. [특징주] 소캠 시장 확대로 날개 단 ‘심텍’ — 이뉴스투데이 · 2026-08-27
  16. 심텍 주가, 웃음꽃 활짝... 왜? — 금강일보 · 2026-08-27
  17. 심텍 주가, 8월 25일 장중 107,800원 2.47% 상승 — 톱스타뉴스 · 2026-08-25
  18. 하나證 “심텍 2700억 시설 투자, 단기적으로 주식가치 희석 불가피” - 조선비즈 — Chosunbiz · 2026-08-25
  19. 효성중공업 주가, 8월 26일 장중 2,766,000원 0.40% 상승 — 톱스타뉴스 · 2026-08-26
  20. 효성중공업, '잘하는 송전을 더 잘하고 있다' 증권사 발표에 강세 — 매일경제 마켓 · 2026-08-24
  21. 미국 전력망 이어 AI 데이터센터 정조준…효성중공업 주가 기대감 커진다 — 핀포인트뉴스 · 2026-08-24
  22. [특징주] '전력기기주' 효성중공업, 美 외국산 금지조치 영향 '상승' — 전국매일신문 · 2026-08-27
  23. 효성중공업 주가 282,000원 상승 후 마감 — 아시아뉴스통신 · 2026-08-27
  24. 효성중공업 주가, 8월 27일 장중 2,927,000원 4.65% 상승세 — 톱스타뉴스 · 2026-08-27
  25. HD현대일렉트릭 주가 장중 7%대 올라, 미국의 중국산 전력장비 수입 규제 강화 흐름에 전력기기주 강세 — 비즈니스포스트 · 2026-08-27
  26. HD현대일렉트릭 주가, 8월 27일 장중 795,000원 8.46% 상승 — 톱스타뉴스 · 2026-08-27
  27. HD현대일렉트릭 주가, 급등세... 이유는? — 금강일보 · 2026-08-27
  28. HD현대일렉트릭, 美 수요 폭발에 증설·수주 '상향'..SK증권 "주가 조정은 매수 기회" — 한국정경신문 · 2026-08-23
  29. [HD현대일렉트릭 주가전망] — Mshale · 2026-08-25
  30. [HD현대일렉트릭 주가 전망] 어제 빅테크 1조 원 초대형 계약, 한국투자 목표가 150만 원 매수 유지! #HD현대일렉트릭주가전망 #HD현대일렉트릭목표가 #HD현대일렉트릭 Urban Meyer (cla9h12Ry7) — Mshale · 2026-08-24

This is market commentary, not investment advice.