007660 - ISU Petasys Co., Ltd.

007660 Summary
Semiconductors
Stock Price & Overview
₩111,100 +5,100 (+4.81%) Close · Sep 4, 2026 KST
KOSPI | ₩KRW | Close: ₩111,100  ≈ US$79  ·  Market cap ₩8.2tn (≈ $5.8bn)

007660 Stock Price

100K150Kprev 106Kpeak 161KOctNovDecJan ’26FebMarAprMayJunJulAugSep111K
52 Week Range
₩59,200₩161,400
Day Range
₩107,300₩111,700
Market Cap
₩8.2tn
P/E (TTM)
40.58x
P/B
9.49x
P/S (TTM)
6.21x
P/CF (TTM)
117.11x
Volume
374,790
Shares Out
73.4M
Prev. Close
₩106,000
vs 52W High
-31.2%
Multiples use the close and the financials that were public on that date (DART), the same series as the Valuation tab — they are not vendor figures.

007660 Momentum

Period007660KOSPIDifference
1 week-1.5%-1.5%-0.0%
1 month+39.6%+5.2%+34.4%
3 months-16.9%-22.6%+5.7%
6 months+12.4%+31.3%-18.8%
Year to date-6.8%+58.7%-65.5%
1 year+73.1%+108.9%-35.9%

Closed at 51% of the way from its 52-week low (₩59,200) to its 52-week high (₩161,400).

Price return on KRX closes, KOSPI on the same dates, no dividends. A period starts at the last trading day on or before the calendar date.

007660 Filings

See all »
DART

5% Ownership Report — Large Holdings

Ownership09/04/26title translated
DART

5% Ownership Report — Short Form

Ownership09/01/26title translated
DART

Half-Year Report

Periodic08/14/26title translated
DART

Investor Relations Event

IR08/10/26title translated
Korean issuers file to DART, not the SEC. Titles are translated; where kstock has read the filing the row carries the explanation.

007660 Company Profile

ISU Petasys makes high-layer-count printed circuit boards, the dense multilayer boards that carry signals inside network switches and AI accelerator systems. Its customers include the makers of AI server hardware, whose data-center buildouts pushed its capacity into shortage. The engineering difficulty of very high layer counts limits how many suppliers can qualify for this work, which is what gives the company its position. US investors reach it while tracing what sits physically underneath Nvidia-class systems.

SectorSemiconductorsEmployees
MarketKOSPIFounded
Korean name이수페타시스Head office

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What a US investor should know

  • Trading hours09:00–15:30 KST — 20:00–02:30 US Eastern the night before.
  • Daily limitKorean stocks can move at most ±30% in a session before trading halts.
  • Getting exposureKRX shares are not directly tradable in most US brokerage accounts. The usual routes are Korea ETFs or an international account.
  • ReportingKorean issuers file to DART, not the SEC. Half-year and quarterly reports land about 45 days after period end.