Morning Report: Korean Markets Decline as Tech and Security Shares Show Resilience

The South Korean market opened lower in the morning session, with the benchmark KOSPI falling 3.23% to 6,686.57 and the tech-heavy KOSDAQ dropping 1.28% to 810.10. The USD/KRW exchange rate was trading at 1,343.03. Despite the overall bearish sentiment, select cybersecurity and semiconductor stocks managed to post gains on specific industry catalysts.

AXGATE Co., Ltd. (356680) +6.79%

AXGATE Co., Ltd. rose 6.79% following positive industry sentiment. The primary driver was Nvidia CEO Jensen Huang identifying 'security' as the next core market for artificial intelligence [3]. Additionally, the rising sophistication of hacking techniques powered by AI has boosted interest in security firms [5]. Although the stock hit its daily upper limit on September 11, 2026 [1][2][4], and triggered a volatility interruption on September 14, 2026 [6], other internal corporate factors remain unconfirmed.

AUK (017900) +14.56%

AUK surged 14.56% during the morning session, driven by growing expectations of a recovery in the semiconductor industry [8]. This positive outlook attracted substantial institutional buying, which helped propel the stock's upward momentum [8]. On September 14, 2026, a volatility interruption (VI) was triggered early in the trading session due to the rapid price rise [7]. Other specific internal or external factors behind the stock's movement remain unconfirmed.

DB HiTek Co.,LTD (000990) +5.20%

DB HiTek Co.,LTD gained 5.20%, buoyed by a doubling of orders for legacy semiconductors, which helped the stock rise 21% over the past month [12]. However, the stock had previously faced downward pressure, including an 8.16% drop on September 11, 2026, to close at 105,800 KRW [9], and a plunge to the 100,000 KRW level in the second week of September [11]. The specific causes behind these recent declines remain unconfirmed.

Sources

1. 엑스게이트 주가, 상한가... 왜? — 금강일보 · 2026-09-11
2. 엑스게이트 주가, 9월 11일 16,060원 29.94% 상한가 마감 — 톱스타뉴스 · 2026-09-11
3. [ET특징주] 젠슨황 “AI 다음 핵심 시장은 '보안'”… 샌즈랩 · 엑스게이트 上 — etnews.com · 2026-09-11
4. [급등주] 엑스게이트, +29.94% 상한가 기록 — 전국매일신문 · 2026-09-11
5. 해킹도 AI로 고도화…엑스게이트·샌즈랩·드림시큐리티 주가 '불기둥' — 핀포인트뉴스 · 2026-09-11
6. [속보] 엑스게이트 VI 발동, 주가 도약 — CBC뉴스 · 2026-09-14
7. [속보] 광전자 VI 발동, 주가 장초반부터 급등 — CBC뉴스 · 2026-09-14
8. 광전자, 반도체 업황 회복 기대감에 기관 매수 유입하며 장중 강세 : 기업주식정보 — 재경일보 · 2026-09-10
9. DB하이텍 주가, 9월 11일 105,800원 8.16% 하락 마감 — 톱스타뉴스 · 2026-09-11
10. DB하이텍 주가, 9월 10일 115,200원 3.32% 상승 마감 — 톱스타뉴스 · 2026-09-10
11. 9월 2주차 DB하이텍 주가, 10만원대 급락 마감 — 톱스타뉴스 · 2026-09-12
12. “구형 반도체라고 무시했는데, 주문 2배 폭주”…한달새 21% 뛴 DB하이텍 [이주의 Bull기둥] — mk.co.kr · 2026-09-12

This is market commentary, not investment advice.