Weekly Theme Wrap (Aug 18 – Aug 21)
4 trading days · top 10 themes — most persistent is Inter-Korean Economic Cooperation at 3 days (weekly avg. +12.3%). Best single day this week: Aug 18, +17.8%.
Average change over the period
Inter-Korean Economic Cooperation led the week of Aug 18 to Aug 21, staying strong for 3 days with an average change of 12.27%. Its best session came on Aug 18 at 16.23%.
Fashion & Clothing posted the highest average change at 13.53%, with a best day of 17.83% on Aug 18. In the F and Good People led both this theme and the inter-Korean theme.
Semiconductor Majors (Fabrication) stayed strong for 3 days and peaked at 8.58% on Aug 20. A news report that day linked a KOSPI jump to SK hynix cancelling treasury shares.
This Week’s Theme Ranking
| Theme | Days strong | Weekly avg. | Best day | Last status | Leader |
|---|---|---|---|---|---|
| Inter-Korean Economic Cooperation | 3d | +12.3% | 2026-08-18 (+16.2%) | recurred | In the F, Chobi, Good People |
| Railways | 3d | +4.9% | 2026-08-18 (+6.2%) | recurred | Busan Industrial, Polaris AI |
| Semiconductor Majors (Fabrication) | 3d | +4.2% | 2026-08-20 (+8.6%) | running | SK hynix, Samsung Electronics |
| Fashion & Clothing | 2d | +13.5% | 2026-08-18 (+17.8%) | running | In the F, Good People |
| Semiconductor Equipment | 2d | +10.8% | 2026-08-18 (+13.1%) | recurred | N2tech, Genesem |
| Stablecoins | 2d | +9.5% | 2026-08-20 (+12.8%) | running | Dozn, coocon |
| Crypto & Bitcoin | 2d | +9.5% | 2026-08-21 (+9.9%) | running | Bitplanet, Parataxis Ethereum |
| S7 (Samsung Electronics, SK hynix etc.) | 2d | +7.4% | 2026-08-20 (+8.6%) | running | SK hynix, Samsung Life Insurance |
| Semiconductor Materials & Components | 2d | +7.1% | 2026-08-18 (+8.2%) | recurred | Micro Contact Solution, Pharmicell |
| Electronic Payments | 2d | +7.0% | 2026-08-21 (+7.1%) | running | coocon, Hecto Financial |
Related News by Theme
- Semiconductor Majors (Fabrication) (2026-08-20) SK하이닉스 자사주 소각에 코스피 급등…‘칠천피’ 성큼 — 쿠키뉴스 (Korean)
What to Watch Next Week
Stablecoins and Electronic Payments both show continuing streaks, and coocon is among the leaders of each. Electronic Payments peaked at 7.07% on Aug 21.
Crypto & Bitcoin also peaked on Aug 21, at 9.93%. Railways and Semiconductor Equipment are both marked as recurring themes, and Semiconductor Equipment had an average change of 10.76%.
Theme heatmap
| 08-18 | 08-19 | 08-20 | 08-21 | |
|---|---|---|---|---|
| Inter-Korean Economic Cooperation | +16.2 | +11.4 | +9.1 | |
| Railways | +6.2 | +4.7 | +3.7 | |
| Semiconductor Majors (Fabrication) | +1.0 | +8.6 | +3.1 | |
| Fashion & Clothing | +17.8 | +9.2 | ||
| Semiconductor Equipment | +13.1 | +8.4 | ||
| Stablecoins | +12.8 | +6.3 | ||
| Crypto & Bitcoin | +9.1 | +9.9 | ||
| S7 (Samsung Electronics, SK hynix etc.) | +8.6 | +6.2 | ||
| Semiconductor Materials & Components | +8.2 | +6.0 | ||
| Electronic Payments | +7.0 | +7.1 |