The Korean stock market experienced a strong rally by midday, with the benchmark KOSPI jumping 4.84% to 6,831.65 and the tech-heavy KOSDAQ rising 1.10% to 757.85. The USD/KRW exchange rate stood at 1,486.95, reflecting a highly active trading session dominated by major technology shares.
SK hynix (000660) +6.35%
| P/E | P/B | EPS | Mkt Cap | ROE | Debt Ratio | 52W Range |
|---|---|---|---|---|---|---|
| 31.91 | 10.95 | 58,955 | ₩1,340.6T | 61.16% | 35.56% | 245,000–2,987,000 |
SK hynix shares surged 6.35% by midday. The stock's positive momentum follows an 8% jump in its US ADR on July 17, 2026, driven by SK Group Chairman Chey Tae-won's optimistic "upward trend" remarks [1]. Strong demand also came from domestic retail investors, with the ADR ranking second in net purchases [2]. While market focus is locked on contrasting target prices ahead of the upcoming earnings release [3], the precise trigger for today's rebound remains unconfirmed from the available headlines [4].
SamsungElectronics (005930) +7.68%
| P/E | P/B | EPS | Mkt Cap | ROE | Debt Ratio | 52W Range |
|---|---|---|---|---|---|---|
| 40.07 | 4.11 | 6,564 | ₩1,537.6T | 19.16% | 30.15% | 64,900–374,500 |
Samsung Electronics jumped 7.68% despite opening lower on July 20, 2026, amid semiconductor sector anxieties [5][6]. Although the company posted robust earnings, concerns over an "AI bubble" have recently weighed on the stock [7]. While the market previously experienced tension due to these semiconductor cold wave fears [5], the stock successfully rebounded [6]. However, the specific core driver behind today's sharp 7.68% midday surge is unconfirmed based on the provided headlines.
SKSQUARE (402340) +6.12%
| P/E | P/B | EPS | Mkt Cap | ROE | Debt Ratio | 52W Range |
|---|---|---|---|---|---|---|
| 18.87 | 5.98 | 66,468 | ₩165.5T | 55.09% | 7.50% | 130,900–2,189,000 |
SK Square climbed 6.12% at midday, showing a reversal from its recent performance. Prior reports on July 18, 2026, indicated that the stock had dropped sharply over five consecutive trading days, with its brief rebound momentum fading [10]. While investment analysis was published on July 19, 2026 [11], the specific catalyst behind today's 6.12% gains or the exact drivers of its recent price fluctuations remain unconfirmed from the provided headlines.
Sources
- 최태원 '주가 우상향' 조언 먹혔나…SK하이닉스 ADR 8% 급등 — 연합인포맥스 · 2026-07-17
- SK하이닉스 ADR, 서학개미 순매수 2위 — 서울경제 · 2026-07-20
- 185만원 vs 420만원…실적발표 앞둔 SK하이닉스 목표주가 ‘극과 극’ — v.daum.net · 2026-07-18
- SK하이닉스 주가, 오늘 반등하는 이유는? — Investing.com 한국어 · 2026-07-17
- [주식전망] 삼성전자 급락에 반도체 한파까지…20일 증시 ‘긴장’ : 네이버 블로그 — Naver Blog · 2026-07-20
- [특징주] 삼성전자, 급락출발 후 상승전환해 강보합…하이닉스 1%↑ — 연합뉴스 · 2026-07-20
- 삼성전자·SK하이닉스 호실적에도 주가 끌어내리는 'AI 버블론', 알파벳 메타 아마존 실적이 판 가른다 — 비즈니스포스트 · 2026-07-20
- [메자닌 투자파일] 삼성전자 주식 다시 꺼낸 베뉴지…웨딩 확장 승부수 — 블로터 · 2026-07-20
- 삼성전자(005930) — 매일경제 마켓 · 2026-07-21
- 최근 5거래일 SK스퀘어 주가 급락 후 반등세 재차 꺾여 — 톱스타뉴스 · 2026-07-18
- SK스퀘어 투자분석 2026. 07. 19 — 주달 · 2026-07-19
This is market commentary, not investment advice.