Weekly Theme Wrap (Oct 26 – Oct 30)
5 trading days · top 10 themes — most persistent is Robotics (Industrial & Collaborative) at 3 days (weekly avg. +12.3%). Best single day this week: Oct 28, +17.4%.
Average change over the period
Robots and chips led theme trading from 2026-10-26 to 2026-10-30. Robotics (Industrial & Collaborative) was strong on 3 days, with an average move of 12.27%.
Cybersecurity had the week’s biggest single-day move, 17.41% on 2026-10-28. SGA Solutions, Sands Lab and Genians led the theme’s return to strength.
Chip themes filled out the list. Semiconductor Equipment had the highest average, 15.48%, with Melcon as its only leader. Semiconductor Materials & Components followed at 13.36%.
This Week’s Theme Ranking
| Theme | Days strong | Weekly avg. | Best day | Last status | Leader |
|---|---|---|---|---|---|
| Robotics (Industrial & Collaborative) | 3d | +12.3% | 2026-10-26 (+15.3%) | running | Namuga, Ich, Wonik Holdings |
| Cybersecurity | 3d | +10.8% | 2026-10-28 (+17.4%) | recurred | SGA Solutions, Sands Lab, Genians |
| Physical AI & Humanoid Robots | 3d | +8.5% | 2026-10-26 (+10.1%) | running | Bigwave Robotics, Woorim Power Train Solution, Hallacast |
| Optical Communications | 3d | +6.8% | 2026-10-28 (+11.0%) | running | RFHIC, Lightron Fiber-optic Devices, Seoul Viosys |
| Semiconductor Equipment | 2d | +15.5% | 2026-10-27 (+16.5%) | running | Melcon |
| Semiconductor Materials & Components | 2d | +13.4% | 2026-10-28 (+13.6%) | running | Hanyang Digitech, Haesung DS |
| HBM (High Bandwidth Memory) | 2d | +9.1% | 2026-10-28 (+10.6%) | running | Di, Genesem |
| Semiconductor Substrates (FC-BGA, MLB) | 2d | +9.0% | 2026-10-27 (+9.8%) | running | GigaVis, TLB |
| SOCAMM Memory Modules | 2d | +8.9% | 2026-10-28 (+9.0%) | running | ISC, Tfe |
| AI & Robotics | 2d | +8.7% | 2026-10-28 (+10.1%) | recurred | Dynamic solution, P&S Robotics |
Related News by Theme
- Robotics (Industrial & Collaborative) (2026-10-26) 젠슨황이 시연한 로봇 효과…로보티즈 주가 ‘불기둥’ — 매일경제 (Korean)
- Cybersecurity (2026-10-28) 증권사에서 코인거래소까지 다 뚫렸다…보안주 동반 급등 — 머니투데이 (Korean)
- Physical AI & Humanoid Robots (2026-10-26) [급등락주 짚어보기] 루닛·뷰노 의료AI 동반 상한가…빅웨이브로보틱스·컨텍도 급등 — 이투데이 (Korean)
- Optical Communications (2026-10-28) 빛과전자, 16%대 급등…美 광통신사 공급 계약 — 머니투데이 (Korean)
- Semiconductor Equipment (2026-10-27) 에스케이증권제14호스팩 34% 급등…멜콘·나무가 30% 육박 — 광주매일신문 (Korean)
What to Watch Next Week
Four themes were strong on 3 days, including Physical AI & Humanoid Robots and Optical Communications. The open question is whether those runs carry into next week.
Memory themes are also on the radar. HBM (High Bandwidth Memory) averaged 9.08% and SOCAMM Memory Modules averaged 8.95%, and each was strong on 2 days.
Theme heatmap
| 10-26 | 10-27 | 10-28 | 10-29 | 10-30 | |
|---|---|---|---|---|---|
| Robotics (Industrial & Collaborative) | +15.3 | +10.1 | +11.3 | ||
| Cybersecurity | +3.9 | +17.4 | +11.3 | ||
| Physical AI & Humanoid Robots | +10.1 | +6.2 | +9.3 | ||
| Optical Communications | +3.2 | +11.0 | +6.2 | ||
| Semiconductor Equipment | +16.5 | +14.4 | |||
| Semiconductor Materials & Components | +13.1 | +13.6 | |||
| HBM (High Bandwidth Memory) | +7.6 | +10.6 | |||
| Semiconductor Substrates (FC-BGA, MLB) | +9.8 | +8.1 | |||
| SOCAMM Memory Modules | +8.9 | +9.0 | |||
| AI & Robotics | +7.3 | +10.1 |