아이에스티이

212710KOSDAQView the 반도체 sectorTheme Semiconductors & electronics

4,785KRWMarket close of 10/27 (Tue)

Up +3.91%+180KRWMarket close of 10/27 (Tue)

Preliminary value — replaced once official KRX data for the same date is publishedClose of 10/28 (Wed)4,950KRWUp +3.45%

Preliminary · replaced once official KRX data for the same date is published

Open: 4,730
High: 5,400
Low: 4,700
Day range: Day range low 4,700 high 5,400, open 4,730, close 4,785, previous close 4,605
Volume: 14×10K shares
: 692.28 million KRW 1.35× the 20-session average

Market close of 10/27 (Tue)

Where it sits in the 1-year range

2% of the way up from the lowest close in 1 year (252 sessions) · -66.8% from the high

Something to check

1 to check: operating loss

Free · no sign-inSource from 2021-05-17

Data dateMost recent closing data10/27 (Tue)

Market close data of 2026-10-27

Points to check

Earningsto check-5.6B KRWOperating income over the last four quarters -5.6B KRW (loss)Operating income, 5 quarters
Recent filingsnot verifiedOutside filing data coverage, so not verified
Foreign & institutionalnot verifiedOutside investor-flow coverage, so not verified

The other 2 are within the usual range

Daily move+3.91%usual range
Trading value1.4×usual range

See the full check report

Key figures

: 46.5B KRW
: Not computed — loss-making, or the four quarters are incomplete
: 2.12×
: 9,714,978 shares
Trading value ratio: 1.35× the 20-session average1.4×

52-week closing rangeNow 4,785

4,60514,420

Financials filed 2026-05-14 · KRX·DART

Something to check

1 to check: operating loss

Earningsto checkQuarterly operating income bars (5); the four dark bars make up the sum-5.6B KRW
Recent filingsnot verifiedOutside filing data coverage, so not verified
Foreign & institutionalnot verifiedOutside investor-flow coverage, so not verified
Daily moveusual range+3.91% on the reference date, placed against the usual ±3.72% band1.1×
Trading valueusual range1.35× the 20-session average1.4×
Data dateusual rangeMarket close data of 2026-10-27

Quarterly results · Q1 2026

Source: DART financials (Q4 derived as annual − three quarters)

Revenue6.4B KRWRevenue bars for the last 5 quarters; the dark bar is this quarter
vs. year ago
-38.2%
vs. prior quarter
-51.9%
Operating income534.87 million KRWOperating income bars for the last 5 quarters; the dark bar is this quarter
vs. year ago
+74.5%
vs. prior quarter
Turned profitable
Operating margin8.4%Operating margin bars for the last 5 quarters; the dark bar is this quarter
vs. year ago
+5.4 pp
vs. prior quarter
+39.8 pp

Quarterly operating income trend

As of the latest official close · 2026-10-27Valuation filing date · 2026-05-14

2025Q1 306.59 million KRW2026Q1 534.87 million KRWQ4 values are derived as the annual figure minus Q1–Q3. The value table marks them in the Type column.

Same sector · 반도체

· 61 of 71 stocks up, preferred shares excluded · trading value 8.28 trillion KRW

Same sector · top by trading value
Stock	20D	Change	Trading value
SK하이닉스	Close over the last 20 sessions -28.0%	Up +5.18%	4,251.5B KRW
삼성전자	Close over the last 20 sessions -22.2%	Up +4.23%	3,162.2B KRW
HD현대에너지솔루션	Close over the last 20 sessions -29.8%	Down -12.46%	75.1B KRW
DB하이텍	Close over the last 20 sessions -28.2%	Up +1.83%	46.9B KRW
제주반도체	Close over the last 20 sessions -17.7%	Up +4.24%	39.7B KRW

Schedule

Next data 10/29 (Thu) after 08:50

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Investor flows, financials and valuation are provided for 369 stocks. These stocks account for about 82% of trading value, about 92% of market capitalisation. Coverage status →

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