Korean Markets Slide Amid Risk-Off Sentiment as Select Tech and Energy Shares Rally

The Korean markets opened sharply lower in the morning session, with the benchmark KOSPI dropping 2.47% to 6,860.33 and the tech-heavy KOSDAQ falling 1.86% to 821.36. The Korean Won weakened to 1,339.00 against the US Dollar, reflecting a broad risk-off sentiment across the board.

SamwhaCapacitor (001820) +18.24%

SamwhaCapacitor chart

Price now₩136,500
Prev close₩115,700
Change+17.98%
Mkt cap₩1.4T
P/E113.18
P/B5.11
EPS₩1,206
ROE6.86%
Debt ratio23.03%
52W range₩27,750–196,800

SamwhaCapacitor surged 18.24% primarily driven by growing market concerns over potential supply shortages of Multi-Layer Ceramic Capacitors (MLCC) [4]. The stock also benefited from strong institutional and foreign investor demand, including simultaneous net buying [2] and a massive net purchase by institutions [6]. Although the stock experienced a 4.28% drop on September 8 [5], the specific reasons for that decline remain unconfirmed. The recent supply worries and robust institutional backing have strongly propelled the share price upward.

Sky Labs Inc. (386380) +10.15%

Sky Labs Inc. chart

Price now₩28,700
Prev close₩26,100
Change+9.96%
Mkt cap₩538B
P/E0
P/B0
EPS
ROE
Debt ratio
52W range₩8,200–39,350

Sky Labs Inc. extended its strong post-listing momentum, rising 10.15%. The rally was fueled by the presentation of clinical data and performance metrics for its ring-type blood pressure monitor, CART, at the European Society of Cardiology [7][11]. This positive reception follows a highly successful KOSDAQ debut where the stock 'doubled' on its first trading day and hit the daily limit on its second day [12], continuing its upward trajectory into the third consecutive session [8][9]. Other specific drivers remain unconfirmed.

AXGATE Co., Ltd. (356680) +19.17%

AXGATE Co., Ltd. chart

Price now₩14,580
Prev close₩12,360
Change+17.96%
Mkt cap₩416B
P/E104.14
P/B9.36
EPS₩140
ROE9.43%
Debt ratio51.08%
52W range₩6,100–30,550

AXGATE Co., Ltd. jumped 19.17%, capitalizing on a broader sector-wide rally in information security themes [13]. The company also gained significant upward momentum as quantum computing-related stocks experienced strong market demand [14]. While these thematic tailwinds have bolstered investor sentiment, the direct, specific catalyst for today's sharp 19.17% spike remains unconfirmed from the available headlines.

SK eternix (475150) +2.90%

SK eternix chart

Price now₩53,400
Prev close₩51,800
Change+3.09%
Mkt cap₩1.8T
P/E58.68
P/B6.6
EPS₩910
ROE2.83%
Debt ratio363.27%
52W range₩17,210–87,700

Analyst consensus — 3 ratings, last 180 days · avg target ₩62,000

Buy3
Hold0
Sell0

SK eternix edged up 2.90%, though the exact fundamental drivers behind today's movement remain unconfirmed due to a lack of specific catalysts in recent headlines. The stock has exhibited notable volatility recently; it climbed over 4% to settle in the 53,000 KRW range on September 9 [17][18], but faced intraday pullbacks of 1.92% on September 8 [20] and 3.95% on September 10 [19].

DOOSAN (000150) +3.25%

DOOSAN chart

Price now₩1,364,000
Prev close₩1,322,000
Change+3.18%
Mkt cap₩22.1T
P/E384.66
P/B15.61
EPS₩3,546
ROE17.75%
Debt ratio161.30%
52W range₩522,000–2,489,000

Analyst consensus — 11 ratings, last 180 days · avg target ₩2,153,636

Buy11
Hold0
Sell0

DOOSAN rose 3.25%, supported by strong institutional demand as institutions recorded a five-day consecutive net buying streak [27]. Sentiment was further boosted by its subsidiary, Doosan Fuel Cell, which saw target price upgrades and a 13% stock surge on expectations of entering the US AI data center and fuel cell markets [24][25][26]. Additionally, Doosan attracted attention as a key beneficiary of nuclear energy contracts [23], though specific drivers for subsidiary Doosan Enerbility's movement remain unconfirmed [22].

Sources

  1. 삼화콘덴서 주가, 9월 9일 장중 116,700원 4.48% 상승 — 톱스타뉴스 · 2026-09-09
  2. [장중수급포착] 삼화콘덴서, 외국인/기관 동시 순매수… 주가 +5.01% — 뉴스핌 · 2026-09-07
  3. 삼화콘덴서 주가, 9월 9일 장중 117,400원 5.10% 상승 — 중앙이코노미뉴스 · 2026-09-09
  4. MLCC 공급 부족 우려에…아모텍 상한가·삼화콘덴서 21%대↑ — 이코노뉴스 · 2026-09-11
  5. 삼화콘덴서 주가, 9월 8일 111,700원 4.28% 하락 마감 — 톱스타뉴스 · 2026-09-08
  6. '삼화콘덴서' 5% 이상 상승, 전일 기관 대량 순매수 — 씽크풀 AI · 2026-09-09
  7. [특징주] 스카이랩스, 유럽심장학회서 반지형 혈압계 임상 데이터 발표에 상한가 마감 — 바이오타임즈 · 2026-09-07
  8. 스카이랩스 주가 장중 18%대 올라, 코스닥 상장 후 3거래일째 강세 — 비즈니스포스트 · 2026-09-08
  9. [ET특징주] 스카이랩스, 상장 사흘째 강세… 22% 또 뛰었다 — 전자신문 · 2026-09-08
  10. 스카이랩스 주가, 상한가... 이유는? — 금강일보 · 2026-09-07
  11. 스카이랩스 주가 19% 급등...CART 혈압계 임상성과 공유 — gukjenews.com · 2026-09-07
  12. [주식] '혈압반지' 스카이랩스, 상장 첫날엔 '더블' 둘째날엔 '상' 찍었다 — 히트뉴스 · 2026-09-07
  13. 특징주, 엑스게이트-정보보안 테마 상승세에 3.44% ↑ — 매일경제 마켓 · 2026-09-11
  14. 우리로·우리넷·엑스게이트 등 양자컴퓨팅 관련주 강세 — gukjenews.com · 2026-09-09
  15. 엑스게이트 투자분석 2026. 09. 08 — 주달 · 2026-09-08
  16. SK이터닉스 주가, 9월 9일 장중 52,500원 2.94% 상승 — 톱스타뉴스 · 2026-09-09
  17. SK이터닉스 주가, 9월 9일 장중 53,400원 4.71% 상승 — 중앙이코노미뉴스 · 2026-09-09
  18. SK이터닉스, 4%대 강세로 5만3천원대 안착하며 마감 : 기업주식정보 — 재경일보 · 2026-09-09
  19. SK이터닉스 주가, 9월 10일 장중 51,100원 3.95% 하락 — 톱스타뉴스 · 2026-09-10
  20. SK이터닉스 주가, 9월 8일 장중 51,100원 1.92% 하락 — 톱스타뉴스 · 2026-09-08
  21. SK이터닉스 주가, 9월 7일 장중 52,100원 0.19% 상승 — 톱스타뉴스 · 2026-09-07
  22. 두산에너빌리티, 오늘 주가 왜 오르나 — kr.investing.com · 2026-09-09
  23. 수주 근거는 두산, 주가는 한전기술…원전 수혜株는 어디로 — 메트로신문 · 2026-09-09
  24. 연료전지 본고장 미국 뚫었다…두산퓨얼셀, 목표주가 줄상향에 날개 — 한국경제 · 2026-09-07
  25. 두산퓨얼셀, 주가 13% 급등…미국 데이터센터 시장 진출 기대감 - 머니투데이 — 머니투데이 · 2026-09-09
  26. 두산퓨얼셀, AI 데이터센터가 새 성장엔진...현 주가는 미국 진출 미반영 — 증권일보 · 2026-09-10
  27. [장중수급포착] 두산, 기관 5일 연속 순매수행진... 주가 +5.85% — 뉴스핌 · 2026-09-09

This is market commentary, not investment advice.