Sep 22: 8 Strong Themes — Semiconductor Substrates (FC-BGA, MLB), PCB & Flexible PCB

September 22, 2026 · #Semiconductor Substrates (FC-BGA, MLB) #PCB & Flexible PCB #AI & Robotics #Semiconductor Equipment #Nuclear #Battery #Semiconductor Materials & Components #Airlines & Low-Cost Carriers

8 strong themes — 2 running · 6 recurred. Top: Semiconductor Substrates (FC-BGA, MLB) +12.4%.

Strong themes8 Top change+12.4% LeaderKorea Circuit

Average change by strong theme

Average change of member stocks, by theme · descending
Semiconductor Substrates (FC-BGA, MLB)
+12.4%
PCB & Flexible PCB
+11.1%
AI & Robotics
+9.2%
Semiconductor Equipment
+8.8%
Nuclear
+7.4%
Battery
+6.6%
Semiconductor Materials & Components
+5.7%
Airlines & Low-Cost Carriers
+5.6%

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 Substrates (FC-BGA, MLB)Korea Circuit+25.43%
PCB & Flexible PCBKorea Circuit+25.43%
AI & RoboticsNota+29.97%
Semiconductor EquipmentDawon Nexview+16.57%
NuclearSammi Metal Products+21.76%
BatterySamkee Energy Solutions+5.18%
Semiconductor Materials & ComponentsMi+13.11%
Airlines & Low-Cost CarriersTway Holdings Incorporation+11.12%

On Sep 22, every stock in all eight strong themes closed higher. Semiconductor Substrates (FC-BGA, MLB) led with an average change of 12.42%.

Korea Circuit led both the substrate and PCB & Flexible PCB themes, rising 25.43%. The PCB theme returned after a gap of 83 days, with an average change of 11.05%.

In AI & Robotics, Nota rose 29.97% and Wsi rose 29.94%. Semiconductor Equipment extended its streak to 5 sessions with an average change of 8.76%.

Today’s Strong Themes at a Glance

#ThemeStatusAvg. changeUp/TotalLeader
1Semiconductor Substrates (FC-BGA, MLB)recurred after 4 days+12.4%10/10Korea Circuit
2PCB & Flexible PCBrecurred after 83 days+11.1%10/10Korea Circuit
3AI & Roboticsrecurred after 4 days+9.2%10/10Nota
4Semiconductor Equipment5 days running+8.8%10/10Dawon Nexview
5Nuclearrecurred after 4 days+7.4%10/10Sammi Metal Products
6Batteryrecurred after 7 days+6.6%10/10Samkee Energy Solutions
7Semiconductor Materials & Components5 days running+5.7%10/10Mi
8Airlines & Low-Cost Carriersrecurred after 14 days+5.6%8/8Tway Holdings Incorporation

Theme by Theme

1. Semiconductor Substrates (FC-BGA, MLB) (recurred after 4 days)

StockChangeCloseLeader
Korea Circuit 007810+25.4%65,600★
TLB 356860+16.8%44,500
Dawon Nexview 323350+16.6%9,490
Simmtech 222800+13.3%148,100
Neotechnicalsystem 085910+13.1%15,960
Daeduck Electronics 353200+10.2%112,300
Intekplus 064290+9.4%55,600
GigaVis 420770+8.7%119,500
Simmtech Holdings 036710+5.8%4,160
Duksanhimetal 077360+4.7%12,930

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2. PCB & Flexible PCB (recurred after 83 days)

StockChangeCloseLeader
Korea Circuit 007810+25.4%65,600★
TLB 356860+16.8%44,500
Interflex 051370+13.9%7,130
Simmtech 222800+13.3%148,100
Neotechnicalsystem 085910+13.1%15,960
Daeduck Electronics 353200+10.2%112,300
NEWFLEXTECHNOLGYCo 085670+6.7%3,090
Samsung Electro-mechanics 009150+4.0%1,486,000
Amogreentech 125210+3.5%6,160
BHCo 090460+3.5%20,150

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3. AI & Robotics (recurred after 4 days)

StockChangeCloseLeader
Nota 486990+30.0%22,550★
Wsi 299170+29.9%1,545
LG Electronics 066570+6.9%216,500
MakinaRocks 477850+6.0%22,000
S2W 488280+4.8%14,520
Maum.ai 377480+4.2%10,320
Twim 290090+3.4%4,510
XIIlab 189330+2.4%11,280
Innodep 303530+2.1%3,095
Saltlux 304100+2.1%15,220

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4. Semiconductor Equipment (5 days running)

StockChangeCloseLeader
Dawon Nexview 323350+16.6%9,490★
Tfe 425420+10.7%64,400
Intekplus 064290+9.4%55,600
GigaVis 420770+8.7%119,500
Asflow 159010+8.0%24,250
LEENO Industrial 058470+7.5%75,000
Device 187870+7.1%11,210
Protec 053610+7.0%73,200
EugeneTechnology 084370+6.4%149,400
Justem 417840+6.2%15,880

5. Nuclear (recurred after 4 days)

StockChangeCloseLeader
Sammi Metal Products 012210+21.8%13,540★
Woniltni 136150+7.8%8,800
Hantech 098070+7.2%26,100
KEPCO Engineering & Construction Company 052690+6.6%138,100
Taihan Cable & Solution 001440+6.4%31,600
Jeil Technos 038010+5.1%5,350
Taewoong 044490+5.0%39,800
SNTEnergy 100840+4.8%38,500
G2Power 388050+4.6%10,760
Bhi 083650+4.5%64,300

6. Battery (recurred after 7 days)

StockChangeCloseLeader
Mi 059090+13.1%22,600
Intekplus 064290+9.4%55,600
Daesung Hi-Tech 129920+9.1%5,640
Almac 354320+7.5%37,450
MKElectron 033160+6.5%15,680
Samkee Energy Solutions 419050+5.2%1,603★
Hansol Chemical 014680+4.4%225,000
V-one Tech 251630+4.2%3,615
Posco Future M 003670+3.4%184,200
TCC Steel 002710+3.4%11,860

7. Semiconductor Materials & Components (5 days running)

StockChangeCloseLeader
Mi 059090+13.1%22,600★
MKElectron 033160+6.5%15,680
Haesung DS 195870+6.0%59,700
Welkeeps Hitech 043590+5.3%1,659
Duksanhimetal 077360+4.7%12,930
Kctech 281820+4.5%80,600
ISC 095340+4.5%208,000
Hansol Chemical 014680+4.4%225,000
Dreamtech 192650+4.0%8,530
KX Hitech 052900+3.8%1,110

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8. Airlines & Low-Cost Carriers (recurred after 14 days)

StockChangeCloseLeader
Tway Holdings Incorporation 004870+11.1%1,009★
Korean Air Lines 003490+8.8%31,400
Asiana Airlines 020560+8.7%8,370
Jejuair 089590+6.1%4,585
Hanjinkal 180640+3.6%143,500
Jin Air 272450+3.3%5,960
Trinity Airways 091810+2.0%2,600
Air Busan 298690+1.2%1,526

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Closing Thoughts

Semiconductor Equipment and Semiconductor Materials & Components both have episodes running to 2026-09-23. The open question is whether the chip chain’s 5-session streak holds.

Nuclear, led by Sammi Metal Products at 21.76%, and Airlines & Low-Cost Carriers returned after gaps of 4 and 14 days. The next test is whether these one-day episodes extend.