Oct 1: 8 Strong Themes — Semiconductor Equipment, System Semiconductors

October 1, 2025 · #Semiconductor Equipment #System Semiconductors #Semiconductor Materials & Components #Shipbuilding Equipment #HBM (High Bandwidth Memory) #Hydrogen (Fuel Cells, Vehicles) #Inter-Korean Economic Cooperation #Solid Oxide Fuel Cells (SOFC)

8 strong themes — 5 running · 3 recurred. Top: Semiconductor Equipment +10.1%.

Strong themes8 Top change+10.1% LeaderDi

Average change by strong theme

Average change of member stocks, by theme · descending
Semiconductor Equipment
+10.1%
System Semiconductors
+9.0%
Semiconductor Materials & Components
+8.0%
Shipbuilding Equipment
+7.9%
HBM (High Bandwidth Memory)
+7.0%
Hydrogen (Fuel Cells, Vehicles)
+5.1%
Inter-Korean Economic Cooperation
+4.5%
Solid Oxide Fuel Cells (SOFC)
+4.4%

Theme leaders · recent trend

The line is the trend; the end-point colour is the last trading day's direction. Stocks without enough price history show as -
ThemeLeaderChangeTrend
Semiconductor EquipmentDi+23.58%
System SemiconductorsDi+23.58%
Semiconductor Materials & ComponentsHaesung DS+15.58%
Shipbuilding EquipmentKS Industry+30.00%
HBM (High Bandwidth Memory)Di+23.58%
Hydrogen (Fuel Cells, Vehicles)JNK Global+12.20%
Inter-Korean Economic CooperationCodes Combine+14.57%
Solid Oxide Fuel Cells (SOFC)SK D&D+13.23%

Chip names dominated the Oct 1 session. Semiconductor Equipment led all themes with an average change of 10.06%, and all 10 of its stocks closed higher.

Di led three chip themes at once, rising 23.58%. System Semiconductors averaged 8.96% and Semiconductor Materials & Components 7.98%, each on a third straight day.

Outside chips, KS Industry jumped 30.0% to lead Shipbuilding Equipment. SK D&D rose 13.23% in Solid Oxide Fuel Cells (SOFC) on news of a Hahn & Company tender offer.

Today’s Strong Themes at a Glance

#ThemeStatusAvg. changeUp/TotalLeader
1Semiconductor Equipment3 days running+10.1%10/10Di
2System Semiconductors3 days running+9.0%10/10Di
3Semiconductor Materials & Components3 days running+8.0%10/10Haesung DS
4Shipbuilding Equipment2 days running+7.9%10/10KS Industry
5HBM (High Bandwidth Memory)3 days running+7.0%10/10Di
6Hydrogen (Fuel Cells, Vehicles)recurred after 13 days+5.1%10/10JNK Global
7Inter-Korean Economic Cooperationrecurred after 8 days+4.5%10/10Codes Combine
8Solid Oxide Fuel Cells (SOFC)recurred after 13 days+4.4%7/7SK D&D

Theme by Theme

1. Semiconductor Equipment (3 days running)

StockChangeCloseLeader
Di 003160+23.6%19,390★
Koses 089890+13.1%17,530
GigaVis 420770+13.0%40,800
HanaMicron 067310+8.6%24,050
Nepes Ark 330860+8.3%18,460
Asflow 159010+7.6%4,380
KohYoungTechnology 098460+7.3%15,500
YC 232140+6.7%14,400
Apact 200470+6.3%5,030
JNB 452160+6.2%8,630

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2. System Semiconductors (3 days running)

StockChangeCloseLeader
Di 003160+23.6%19,390★
HanaMicron 067310+8.6%24,050
Nepes Ark 330860+8.3%18,460
Alt 172670+8.0%10,040
Qualitas Semiconductor 432720+7.9%15,370
ABOV Semiconductor 102120+7.5%12,900
KohYoungTechnology 098460+7.3%15,500
Doosan Tesna 131970+7.2%42,700
ADTechnology 200710+6.1%25,950
Gaonchips 399720+5.3%49,750

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3. Semiconductor Materials & Components (3 days running)

StockChangeCloseLeader
Haesung DS 195870+15.6%35,600★
Temc 425040+13.4%10,500
HanaMicron 067310+8.6%24,050
ENF Technology 102710+7.8%59,800
Purit 445180+6.7%7,920
WONIK Materials 104830+6.4%34,150
Ycchem 112290+5.5%22,050
New Power Plasma 144960+5.5%5,560
WONIK QnC 074600+5.5%25,050
Dongjin Semichem 005290+4.9%43,150

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4. Shipbuilding Equipment (2 days running)

StockChangeCloseLeader
KS Industry 101000+30.0%1,274★
Hanwha Engine 082740+10.4%49,550
T. K 023160+8.0%27,850
HD-Hyundai Marine Engine 071970+6.6%88,400
HD Hyundai Marine Solution 443060+5.2%221,000
Hankuk Carbon 017960+4.6%34,200
Sung Kwang Bend 014620+4.1%34,150
Hy-lok 013030+3.9%36,000
Inhwa Precision 101930+3.2%57,100
Taewoong 044490+2.6%31,850

5. HBM (High Bandwidth Memory) (3 days running)

StockChangeCloseLeader
Di 003160+23.6%19,390★
KohYoungTechnology 098460+7.3%15,500
YC 232140+6.7%14,400
Imt 451220+6.1%11,070
Ycchem 112290+5.5%22,050
Mirai Semiconductors 254490+4.4%17,440
Systems Technology 039440+4.2%23,700
Openedges Technology 394280+4.0%12,320
Dit 110990+3.9%16,090
Winpac 097800+3.9%567

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6. Hydrogen (Fuel Cells, Vehicles) (recurred after 13 days)

StockChangeCloseLeader
JNK Global 126880+12.2%4,830★
Vina Tech 126340+11.3%54,200
WONIK Materials 104830+6.4%34,150
Mi 059090+4.5%15,050
Dit 110990+3.9%16,090
LTC 170920+3.1%20,100
Hyosung Heavy Industries 298040+2.6%1,375,000
SY Dong-a 041930+2.5%6,430
Inzi Controls 023800+2.3%5,800
SNT Motiv 064960+2.0%35,050

7. Inter-Korean Economic Cooperation (recurred after 8 days)

StockChangeCloseLeader
Codes Combine 047770+14.6%2,155★
Good People 033340+6.0%2,120
In the F 014990+5.3%1,160
Ananti 025980+3.9%9,430
Hyundai Engineering & Construction 000720+3.3%56,200
J.estina 026040+3.0%3,805
Ilshin Stone 007110+2.9%2,035
Inzi Controls 023800+2.3%5,800
Chobi 001550+2.0%12,150
Jaeyoung Solutec 049630+1.9%835

8. Solid Oxide Fuel Cells (SOFC) (recurred after 13 days)

StockChangeCloseLeader
SK D&D 210980+13.2%12,670★
Mi 059090+4.5%15,050
Bhi 083650+4.3%49,250
Amosense 357580+3.6%8,630
LTC 170920+3.1%20,100
SK eternix 475150+1.4%21,950
Doosan Fuel Cell 336260+0.3%28,600

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Closing Thoughts

The chip rally hit a third straight day in four themes, including HBM (High Bandwidth Memory) at 6.95% on average. Whether gains spread beyond Di is the next test.

Hydrogen (Fuel Cells, Vehicles) and Inter-Korean Economic Cooperation came back after gaps of 13 and 8 days. Whether these one-day episodes repeat remains open.