Oct 2025 Theme Wrap — The Monthly Theme Map
18 trading days · 75 recurring themes · top 15 themes — most persistent is Semiconductor Majors (Fabrication) at 10 days (monthly avg. +3.9%). Best single day this month: Oct 10, +19.2%.
Average change over the period
In October 2025, Semiconductor Majors (Fabrication) logged the most strong days, 10 in total. Its best change of 6.67% came on Oct 2.
Battery followed with 9 strong days and an average change of 12.21%. Its best change of 17.28% came on Oct 24.
The highest average change belonged to Robotics (Industrial & Collaborative) at 14.4%, despite only 5 strong days. Its best change of 19.17% came on Oct 10.
75 themes recurred this month.
Monthly Theme Ranking
| Theme | Days strong | Monthly avg. | Best day | Leader |
|---|---|---|---|---|
| Semiconductor Majors (Fabrication) | 10d | +3.9% | 2025-10-02 (+6.7%) | DB HiTek, SK hynix, Samsung Electronics |
| Battery | 9d | +12.2% | 2025-10-24 (+17.3%) | Kangwon Energy, Korea Zinc, Sebitchem |
| Semiconductor Equipment | 7d | +10.2% | 2025-10-10 (+13.1%) | Gigalane, Di, Robostar |
| AI & Robotics | 7d | +8.6% | 2025-10-20 (+16.1%) | Datasolution, Robostar, Clobot |
| Car Majors | 7d | +3.0% | 2025-10-16 (+5.5%) | Kia, Hanon Systems, Hyundai Motor |
| Power Equipment | 6d | +6.5% | 2025-10-23 (+9.2%) | LS Marine Solution, Kwang Myung Electric, Aroot |
| HBM (High Bandwidth Memory) | 6d | +6.3% | 2025-10-10 (+9.3%) | Di, Micro2nano, Systems Technology |
| Inter-Korean Economic Cooperation | 6d | +5.4% | 2025-10-20 (+7.7%) | Jaeyoung Solutec, Codes Combine |
| Robotics (Industrial & Collaborative) | 5d | +14.4% | 2025-10-10 (+19.2%) | SJG Sejong, Robostar, Woorim Power Train Solution |
| EV | 5d | +9.6% | 2025-10-24 (+14.1%) | Kangwon Energy, DY Deokyang, Wonik Pne |
| Auto Parts | 5d | +9.4% | 2025-10-20 (+12.6%) | SJG Sejong, Motivelink, Top Run Total Solution |
| Nuclear | 5d | +9.2% | 2025-10-24 (+10.7%) | Kangwon Energy, Daechang Solution, Bosung Power Technology |
| Shipbuilding Equipment | 5d | +8.8% | 2025-10-21 (+16.8%) | KS Industry, Samyoung M-tek C0, CP System |
| Semiconductor Materials & Components | 5d | +8.3% | 2025-10-02 (+11.1%) | Mi, Chunbo, Purit |
| Shipbuilding | 5d | +4.0% | 2025-10-27 (+7.3%) | Dongil Steelux, Samsung Heavy Industries, HD Hyundai Mipo |
What to Watch Next Month
Power Equipment, Car Majors and Semiconductor Majors (Fabrication) were the themes on a continuing streak at month-end. The next wrap will show whether those streaks hold.
Robostar was among the leaders of both robotics themes and Semiconductor Equipment. Kangwon Energy was among the leaders of Battery, EV and Nuclear.
Theme heatmap
| 10-01 | 10-02 | 10-10 | 10-13 | 10-14 | 10-15 | 10-16 | 10-17 | 10-20 | 10-21 | 10-22 | 10-23 | 10-24 | 10-27 | 10-28 | 10-29 | 10-30 | 10-31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Semiconductor Majors (Fabrication) | +2.7 | +6.7 | +6.5 | +4.2 | +3.4 | +1.8 | +4.4 | +3.0 | +4.1 | +2.7 | ||||||||
| Battery | +8.6 | +13.0 | +10.9 | +15.4 | +16.0 | +7.6 | +11.0 | +17.3 | +10.1 | |||||||||
| Semiconductor Equipment | +10.1 | +9.7 | +13.1 | +8.7 | +11.0 | +10.0 | +8.9 | |||||||||||
| AI & Robotics | +3.5 | +14.0 | +4.3 | +6.7 | +16.1 | +6.5 | +9.0 | |||||||||||
| Car Majors | +2.1 | +5.5 | +3.3 | +2.3 | +2.0 | +0.8 | +5.1 | |||||||||||
| Power Equipment | +3.9 | +2.9 | +9.2 | +8.6 | +5.6 | +8.8 | ||||||||||||
| HBM (High Bandwidth Memory) | +7.0 | +7.4 | +9.3 | +5.2 | +4.9 | +3.8 | ||||||||||||
| Inter-Korean Economic Cooperation | +4.5 | +4.5 | +4.4 | +7.7 | +5.4 | +6.0 | ||||||||||||
| Robotics (Industrial & Collaborative) | +19.2 | +12.9 | +8.8 | +16.3 | +14.8 | |||||||||||||
| EV | +5.9 | +11.6 | +8.7 | +7.8 | +14.1 | |||||||||||||
| Auto Parts | +3.5 | +10.7 | +12.6 | +10.3 | +10.0 | |||||||||||||
| Nuclear | +10.2 | +9.3 | +7.5 | +10.7 | +8.4 | |||||||||||||
| Shipbuilding Equipment | +7.9 | +8.9 | +2.3 | +16.8 | +8.0 | |||||||||||||
| Semiconductor Materials & Components | +8.0 | +11.1 | +7.5 | +5.8 | +9.3 | |||||||||||||
| Shipbuilding | +1.5 | +2.6 | +1.6 | +6.8 | +7.3 |