403870 - HPSP Co., Ltd.

403870 Summary
Semiconductors
Stock Price & Overview
₩50,800 +600 (+1.20%) Close · Sep 4, 2026 KST
KOSDAQ | ₩KRW | Close: ₩50,800  ≈ US$36  ·  Market cap ₩4.2tn (≈ $3.0bn)
What kstock analysis is. It reads the Korean news and the DART filing, checks the numbers against the source, and explains what changed and what to watch. It does not issue buy, sell or hold ratings and it does not set price targets. Why not »

403870 Analysis

ks

HPSP: A 52% Operating Margin Just Lost Its Patent Case

Korea's Patent Court ruled on June 18 that rival YEST's high-pressure annealing equipment does not infringe HPSP's patent. YEST says the legal barrier to commercialising it is gone.

kstock researchYesterday, 1:28 AMPatentsSave
1 piece. Written with AI assistance from Korean-language sources; each links the article it rests on.

Similar to 403870

SymbolLast Price
036930Jusung Engineering Co., Ltd.₩178,300
+6.1%
007660ISU Petasys Co., Ltd.₩111,100
+4.8%
240810Wonik IPS Co., Ltd.₩114,800
+9.3%
039030EO Technics Co., Ltd.₩443,000
+6.0%
058470Leeno Industrial Inc.₩66,600
+3.6%
000990DB HiTek₩89,900
+2.0%
440110FADU, Inc.₩67,300
+9.4%
080220Jeju Semiconductor Corp.₩71,800
+4.4%
067310Hana Micron, Inc.₩34,850
+0.4%
322000HD Hyundai Energy Solutions Co., Ltd.₩138,900
+7.3%
Compare all 24 in Semiconductors

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.