Weekly Theme Wrap (May 26 – May 30)
5 trading days · top 10 themes — most persistent is COVID (Diagnostics, Treatments, Vaccines) at 4 days (weekly avg. +10.1%). Best single day this week: May 29, +17.9%.
Average change over the period
The week of 2025-05-26 to 2025-05-30 was led by COVID (Diagnostics, Treatments, Vaccines), strong on 4 days with an average change of 10.1%. Its best day was May 30, up 10.78%.
Holding Companies posted an average change of 9.99%, with the week’s top single-day move of 17.88% on May 29. Daewoong appeared among the leaders of both top themes.
Pharma was strong on 4 days with an average change of 6.04%. Shipbuilding, construction and steel themes each logged 3 strong days. Shipbuilding Equipment averaged 6.53%.
This Week’s Theme Ranking
| Theme | Days strong | Weekly avg. | Best day | Last status | Leader |
|---|---|---|---|---|---|
| COVID (Diagnostics, Treatments, Vaccines) | 4d | +10.1% | 2025-05-30 (+10.8%) | running | Daewoong, Cellid, Shinpoong Pharmaceutical |
| Holding Companies | 4d | +10.0% | 2025-05-29 (+17.9%) | running | Daewoong, Kolon, Hanjinkal |
| Pharma | 4d | +6.0% | 2025-05-26 (+9.3%) | running | Kukjeon, Green Lifescience |
| Shipbuilding Equipment | 3d | +6.5% | 2025-05-26 (+8.0%) | recurred | Taewoong, Hyundai HYMS, Finebesteel |
| Power Equipment | 3d | +5.2% | 2025-05-27 (+6.7%) | recurred | Kwang Myung Electric, Bosung Power Technology, TC Materials |
| Shipbuilding | 3d | +5.1% | 2025-05-27 (+8.3%) | recurred | HD Korea Shipbuilding & Offshore Engineering, HD Hyundai Heavy Industries, Samsung Heavy Industries |
| Construction Majors | 3d | +4.0% | 2025-05-26 (+4.1%) | running | GS Engineering & Construction, Hyundai Engineering & Construction |
| Construction (Small & Mid Cap) | 3d | +3.5% | 2025-05-29 (+5.3%) | running | Kye-ryong Construction Industrial, Sangji Construction, Ilsung Construction |
| Steel (Small & Mid Cap) | 3d | +3.4% | 2025-05-26 (+4.2%) | running | KBI Dong Yang Steel Pipe, TCC Steel, Histeel |
| Steel Majors | 3d | +2.6% | 2025-05-28 (+3.7%) | running | Dongkuk Steel Mill, SeAH Besteel Holdings, Hyundai Steel Company |
Related News by Theme
- COVID (Diagnostics, Treatments, Vaccines) (2025-05-30) 국전약품, 6%대↑…아시아 코로나19 재확산 소식에 연일 강세[특징주] — 이데일리 (Korean)
- Holding Companies (2025-05-29) [특징주] 지주사 HS효성, 배당수익률 최대 200% 기대에 ‘上’ — 이투데이 (Korean)
- Power Equipment (2025-05-27) [서울데이터랩]티씨머티리얼즈 30.00% 상한가…금일 증시 상승률 1위로 마감 — 서울신문 (Korean)
What to Watch Next Week
Shipbuilding Equipment, Power Equipment and Shipbuilding returned as recurring themes rather than continuous ones. TC Materials drew headlines on May 27 with a 30.00% upper-limit close.
The next sessions will show whether the COVID (Diagnostics, Treatments, Vaccines) streak, linked in news to a renewed spread in Asia, extends past May 30.
Theme heatmap
| 05-26 | 05-27 | 05-28 | 05-29 | 05-30 | |
|---|---|---|---|---|---|
| COVID (Diagnostics, Treatments, Vaccines) | +9.4 | +10.3 | +9.9 | +10.8 | |
| Holding Companies | +5.6 | +7.1 | +9.4 | +17.9 | |
| Pharma | +9.3 | +4.4 | +5.4 | +5.0 | |
| Shipbuilding Equipment | +8.0 | +7.4 | +4.2 | ||
| Power Equipment | +3.4 | +6.7 | +5.6 | ||
| Shipbuilding | +4.1 | +8.3 | +2.8 | ||
| Construction Majors | +4.1 | +3.9 | +4.0 | ||
| Construction (Small & Mid Cap) | +2.7 | +2.5 | +5.4 | ||
| Steel (Small & Mid Cap) | +4.3 | +2.9 | +3.1 | ||
| Steel Majors | +2.3 | +3.7 | +1.9 |