Daily top losers

KOSPI and KOSDAQ stocks with the biggest one-day losses and meaningful trading value.

Observed 2026-10-27 · Fresh

Rank	Name	Market	Current	1D	Mkt Cap
1	그린플러스 186230	KOSDAQ	3,310	-16.73%	36.1B KRW
2	지투지바이오 456160	KOSDAQ	39,350	-12.94%	654.4B KRW
3	이노인스트루먼트 215790	KOSDAQ	2,915	-12.46%	23.5B KRW
4	HD현대에너지솔루션 322000	KOSPI	84,600	-12.15%	947.5B KRW
5	RF시스템즈 474610	KOSDAQ	6,710	-10.77%	96.7B KRW
6	에스티팜 237690	KOSDAQ	80,600	-8.93%	1.7T KRW
7	아이씨에이치 368600	KOSDAQ	5,090	-8.29%	26.3B KRW
8	지씨지놈 340450	KOSDAQ	8,320	-8.07%	196.8B KRW
9	뷰노 338220	KOSDAQ	7,110	-7.42%	99.6B KRW
10	노을 376930	KOSDAQ	2,015	-7.14%	20.7B KRW
11	지아이이노베이션 358570	KOSDAQ	7,120	-7.05%	459.4B KRW
12	키다리스튜디오 020120	KOSPI	3,750	-6.83%	139B KRW
13	삼성바이오로직스 207940	KOSPI	1,369,000	-5.72%	63.4T KRW
14	KG모빌리티플랫폼 381970	KOSPI	5,970	-3.86%	291.5B KRW
15	진양화학 051630	KOSPI	2,145	-3.81%	45.5B KRW
16	CJ4우(전환) 00104K	KOSPI	110,900	-3.57%	468.7B KRW
17	롯데에너지머티리얼즈 020150	KOSPI	44,700	-3.56%	2.3T KRW
18	하이브 352820	KOSPI	168,600	-3.16%	7.3T KRW
19	천일고속 000650	KOSPI	210,000	-2.78%	300.1B KRW
20	달바글로벌 483650	KOSPI	145,400	-2.61%	1.8T KRW

Interpretation guide

How to read the daily top losers

The Daily Top Losers radar lists the biggest one-day decliners in KOSPI and KOSDAQ, filtered by a trading-value floor. Use it to check risk on holdings, to see where selling pressure is concentrating, and to build a watchlist of potentially oversold names — in that order.

Selection rules

The screen starts from Naver Finance's per-market top-loser lists and keeps only stocks with at least 1 billion KRW in daily trading value. That filters out bid-gap drops in tiny names and keeps the list focused on declines driven by real selling.

Up to 10 names per market (KOSPI and KOSDAQ), 20 in total.
Sorted by one-day percentage change in ascending order (largest losses first).
Thin drops below the 1 billion KRW turnover floor are excluded.

How to interpret it

What matters is the character of the decline: an isolated stock-specific event, a theme unwinding all at once, or broad risk-off that reaches large caps. Each calls for a different response.

Several names from one theme falling together suggests theme capital is exiting.
Moves near -30% are at Korea's daily limit; margin liquidations can extend into the next session.
Heavy turnover on the way down means real selling, not just a thin order book.

How to respond

Buying crashes is as dangerous as chasing spikes. Do not treat the size of a decline as a reason to buy before you understand the cause and check the flow direction.

If a holding appears here, verify the news first and re-check your stop level.
Overlap with the foreign + institution co-sell radar means professional money is leaving.
Overlap with the 52-week-low radar signals a trend break — avoid bounce trades there.

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