Aug 21: 8 Strong Themes — Nuclear, Auto Parts

August 21, 2025 · #Nuclear #Auto Parts #Battery #EV #Semiconductor Equipment #Shipbuilding #Shipbuilding Equipment #Defense & War

8 strong themes — 8 recurred. Top: Nuclear +9.7%.

Strong themes8 Top change+9.7% LeaderBosung Power Technology

Average change by strong theme

Average change of member stocks, by theme · descending
Nuclear
+9.7%
Auto Parts
+6.5%
Battery
+5.9%
EV
+5.1%
Semiconductor Equipment
+4.7%
Shipbuilding
+4.6%
Shipbuilding Equipment
+4.4%
Defense & War
+3.6%

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
NuclearBosung Power Technology+21.31%
Auto PartsTHN+14.00%
BatteryKangwon Energy+16.68%
EVKangwon Energy+16.68%
Semiconductor EquipmentGreen Resource+25.90%
ShipbuildingDaehan Shipbuilding+10.79%
Shipbuilding EquipmentKS Industry+7.24%
Defense & WarWoori Technology, Incorporation+3.27%

Every strong theme on Aug 21 finished with all of its stocks higher. Nuclear topped the board with an average change of 9.73%, as all 10 of its names rose.

Bosung Power Technology led nuclear with a 21.31% jump on volume of 57820112 shares. KEPCO Engineering & Construction Company added 15.29%.

The day’s biggest single gain was Green Resource, up 25.9% in Semiconductor Equipment. Kangwon Energy led both Battery and EV at 16.68%.

Today’s Strong Themes at a Glance

#ThemeStatusAvg. changeUp/TotalLeader
1Nuclearrecurred after 10 days+9.7%10/10Bosung Power Technology
2Auto Partsrecurred after 2 days+6.5%9/9THN
3Batteryrecurred after 10 days+5.9%10/10Kangwon Energy
4EVrecurred after 2 days+5.1%10/10Kangwon Energy
5Semiconductor Equipmentrecurred after 8 days+4.7%10/10Green Resource
6Shipbuildingrecurred after 3 days+4.6%7/7Daehan Shipbuilding
7Shipbuilding Equipmentrecurred after 3 days+4.4%10/10KS Industry
8Defense & Warrecurred after 23 days+3.6%9/9Woori Technology, Incorporation

Theme by Theme

1. Nuclear (recurred after 10 days)

StockChangeCloseLeader
Bosung Power Technology 006910+21.3%4,070★
KEPCO Engineering & Construction Company 052690+15.3%100,300
Daewoo Engineering & Construction 047040+13.1%4,155
Bhi 083650+7.7%46,850
KEPCO Plant Service & Engineering 051600+7.7%52,500
Doosan Enerbility 034020+7.1%61,500
G2Power 388050+6.5%8,780
Woojin 105840+6.5%10,780
Enertork 019990+6.0%7,740
Hanshin Machinery 011700+6.0%3,545

2. Auto Parts (recurred after 2 days)

StockChangeCloseLeader
THN 019180+14.0%4,600★
SJG Sejong 033530+10.5%5,880
Infac 023810+6.8%6,780
Ewon Comfortech 088290+5.2%1,124
DN Automotive 007340+4.6%24,850
Hanon Systems 018880+4.5%3,795
Inhwa Precision 101930+4.3%44,800
Dae-il 092200+4.2%4,295
Ilji Technology 019540+4.1%4,220

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3. Battery (recurred after 10 days)

StockChangeCloseLeader
Kangwon Energy 114190+16.7%12,870★
Korea Petro Chemical Ind 006650+7.1%104,000
DSK 109740+6.0%7,800
Isu Specialty Chemical 457190+4.9%48,100
SungEel HiTech 365340+4.6%40,150
Hana Technology 299030+4.5%25,450
Samjin LND 054090+4.4%861
Zaigle 234920+4.3%5,520
LG Chem 051910+3.4%293,000
Pemtron 168360+3.3%10,320

4. EV (recurred after 2 days)

StockChangeCloseLeader
Kangwon Energy 114190+16.7%12,870★
Infac 023810+6.8%6,780
Hanon Systems 018880+4.5%3,795
Dae-il 092200+4.2%4,295
A-jin Industry 013310+4.0%3,745
LG Chem 051910+3.4%293,000
mPlus 259630+3.3%10,950
Sewon 234100+2.9%1,298
Hwashin 010690+2.8%8,960
SNT Motiv 064960+2.6%33,350

5. Semiconductor Equipment (recurred after 8 days)

StockChangeCloseLeader
Green Resource 402490+25.9%9,430★
Union Semiconductor Equipment Co.,ltd; 036200+3.5%7,600
Pemtron 168360+3.3%10,320
Pamtek 271830+3.0%1,873
Imt 451220+2.4%10,150
Hanwha Vision 489790+2.1%54,200
Laserssel 412350+1.9%3,170
JNB 452160+1.9%8,120
JT 089790+1.8%3,950
Withtech 348350+1.5%8,810

6. Shipbuilding (recurred after 3 days)

StockChangeCloseLeader
Daehan Shipbuilding 439260+10.8%91,400★
Hanwha Ocean 042660+5.9%111,400
HD Hyundai Heavy Industries 329180+4.8%472,000
HJ Shipbuilding & Construction 097230+4.5%14,080
HD Hyundai Mipo 010620+2.5%188,700
HD Korea Shipbuilding & Offshore Engineering 009540+1.7%355,500
Samsung Heavy Industries 010140+1.7%19,250

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7. Shipbuilding Equipment (recurred after 3 days)

StockChangeCloseLeader
Hanwha Engine 082740+7.6%42,350
KS Industry 101000+7.2%1,866★
Taewoong 044490+5.5%37,550
Inhwa Precision 101930+4.3%44,800
Il Seung 333430+3.9%5,320
Daechang Solution 096350+3.4%425
HD-Hyundai Marine Engine 071970+3.3%80,500
Dongbang Ship Machinery 099410+3.3%3,485
Sung Kwang Bend 014620+2.6%29,550
Daeyang Electric 108380+2.5%24,200

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8. Defense & War (recurred after 23 days)

StockChangeCloseLeader
Hanwha Ocean 042660+5.9%111,400
HJ Shipbuilding & Construction 097230+4.5%14,080
Hanwha Systems 272210+3.8%51,100
WaveElectronics 095270+3.7%4,390
Woori Technology, Incorporation 032820+3.3%3,470★
Samhyun 437730+3.2%11,530
SNT Dynamics 003570+3.0%57,400
Wavice 289930+2.8%8,060
SNT Motiv 064960+2.6%33,350

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Closing Thoughts

The Nuclear episode runs from 2025-08-21 to 2025-08-25, a span of 5 days. The theme came back after a gap of 10 days.

The Shipbuilding, Shipbuilding Equipment and Defense & War episodes run through 2025-08-22. Daehan Shipbuilding led Shipbuilding with a 10.79% rise.