Weekly Theme Wrap (Apr 13 – Apr 17)
5 trading days · top 10 themes — most persistent is Semiconductor Equipment at 5 days (weekly avg. +12.2%). Best single day this week: Apr 15, +29.9%.
Average change over the period
Chip themes set the tone for the week of Apr 13 to Apr 17. Semiconductor Equipment and Semiconductor Materials & Components were both strong on all 5 days.
Quantum Cryptography & Computing posted the week’s biggest single-day move, a best change of 29.94% on Apr 15. Dream Security led both that theme and Cybersecurity.
Telecom Equipment had the highest average change of the week, 26.87%, led by Frtek and Woori-Net. Semiconductor Majors (Fabrication) moved less, with an average change of 2.54%.
This Week’s Theme Ranking
| Theme | Days strong | Weekly avg. | Best day | Last status | Leader |
|---|---|---|---|---|---|
| Semiconductor Equipment | 5d | +12.2% | 2026-04-17 (+13.5%) | running | Gigalane, N2tech, Justem |
| Semiconductor Materials & Components | 5d | +10.7% | 2026-04-14 (+13.8%) | running | Duksanhimetal, Ram Technology, MKElectron |
| Semiconductor Majors (Fabrication) | 4d | +2.5% | 2026-04-16 (+3.2%) | running | DB HiTek, SK hynix |
| Cybersecurity | 3d | +23.8% | 2026-04-15 (+29.2%) | running | Dream Security, Softcamp, Inspien |
| Quantum Cryptography & Computing | 3d | +22.5% | 2026-04-15 (+29.9%) | running | Dream Security, Satoshi Holdings, Korea Computer & Systems |
| HBM (High Bandwidth Memory) | 3d | +6.4% | 2026-04-14 (+9.1%) | running | MKElectron, UniTest |
| Beauty & Cosmetics | 3d | +6.2% | 2026-04-13 (+7.7%) | recurred | CQV, GFC Life Science, Hyundai Bioscience |
| Telecom Equipment | 2d | +26.9% | 2026-04-13 (+29.9%) | running | Frtek, Woori-Net |
| 5G | 2d | +21.1% | 2026-04-13 (+28.7%) | running | Frtek, Woori-Net |
| COVID (Diagnostics, Treatments, Vaccines) | 2d | +16.5% | 2026-04-17 (+23.6%) | running | NanoSilikhan Advanced Materials, Sugentech |
Related News by Theme
- Semiconductor Equipment (2026-04-17) 기가레인, 美 페러렐와이어리스와 통신장비 공급계약 — 뉴스핌 (Korean)
- Semiconductor Materials & Components (2026-04-14) [장중수급포착] 엠케이전자, 외국인/기관 동시 순매수… 주가 +21.97% — 뉴스핌 (Korean)
- Cybersecurity (2026-04-15) [특징주] 드림시큐리티 등 양자암호 테마 상한가…엔비디아 양자AI 진출 수혜 — 뉴스핌 (Korean)
- Quantum Cryptography & Computing (2026-04-15) [특징주] 드림시큐리티 등 양자암호 테마 상한가…엔비디아 양자AI 진출 수혜 — 뉴스핌 (Korean)
What to Watch Next Week
The open question is whether Semiconductor Equipment extends a run that peaked at 13.51% on Apr 17. That same day brought news of a Gigalane telecom equipment supply contract.
COVID (Diagnostics, Treatments, Vaccines) also had its best change on Apr 17, at 23.63%. Whether these late-week moves continue into the next session is the other thing to follow.
Theme heatmap
| 04-13 | 04-14 | 04-15 | 04-16 | 04-17 | |
|---|---|---|---|---|---|
| Semiconductor Equipment | +11.8 | +12.3 | +13.5 | +10.1 | +13.5 |
| Semiconductor Materials & Components | +8.3 | +13.8 | +8.6 | +13.3 | +9.4 |
| Semiconductor Majors (Fabrication) | +1.5 | +3.0 | +2.4 | +3.2 | |
| Cybersecurity | +16.1 | +29.2 | +26.0 | ||
| Quantum Cryptography & Computing | +15.7 | +29.9 | +21.8 | ||
| HBM (High Bandwidth Memory) | +9.1 | +4.6 | +5.6 | ||
| Beauty & Cosmetics | +7.6 | +5.3 | +5.5 | ||
| Telecom Equipment | +29.9 | +23.8 | |||
| 5G | +28.7 | +13.4 | |||
| COVID (Diagnostics, Treatments, Vaccines) | +9.3 | +23.6 |