At the Oct 13 close, 1 rose and 6 fell, with a median move of −2.4%. Of the 7 stocks with a prior-session comparison, 4 improved relative strength and 3 improved momentum.
Compare 7 tracked South Korean companies in transformer & switchgear: what they do, where they fit in the industry, and their local share prices.
Large power transformers, circuit breakers, and switchgear
Prices are in South Korean won (KRW). Stock codes identify local KOSPI or KOSDAQ listings, not US ADRs. These are closing-price observations, not a real-time feed.
Highest composite score in this tracked group: SANIL ELECTRIC CO., LTD. This is a multi-factor score, not relative strength alone.
| Company / listing | Close (KRW) | Change | Market cap (KRW) | Composite score |
|---|---|---|---|---|
| SANIL ELECTRIC CO., LTDKOSPI · 062040 | 211,0002026-10-13 | -1.63% | 6.5T | 58.92026-10-13 |
| LS ELECTRIC CO., LTDKOSPI · 010120 | 179,2002026-10-13 | -2.40% | 26.9T | 52.92026-10-13 |
| CHERYONG ELECTRIC CO.,LTD.KOSDAQ · 033100 | 43,8502026-10-13 | -2.45% | 704.3B | 47.62026-10-13 |
| KEPCO Plant Service & Engineering Co., LtdKOSPI · 051600 | 43,3002026-10-13 | +1.17% | 1.9T | 46.92026-10-13 |
| ILJIN ELECTRIC CO.,LTDKOSPI · 103590 | 73,4002026-10-13 | -0.54% | 3.5T | 46.32026-10-13 |
| Hyosung Heavy Industries CorporationKOSPI · 298040 | 2,152,0002026-10-13 | -4.01% | 20.1T | 39.92026-10-13 |
| HD HYUNDAI ELECTRIC CO.,LTDKOSPI · 267260 | 560,0002026-10-13 | -3.78% | 20.2T | 39.92026-10-13 |
The 0–100 composite combines relative strength (30%), momentum (20%), volume (15%), ETF weight (15%), node correlation (5%), new inclusion (5%) and short-squeeze positioning (10%). It is not a return forecast or a pure relative-strength ranking. A dash means data is unavailable, not zero.
Business roles are separate from the site's screening rules. ETF inclusion or pension-fund ownership does not establish a company's product mix. Source-backed notes below explain our classification; they do not quantify revenue exposure or recommend a trade.
Sanil Electric manufactures power and distribution transformers and reactors. It drew attention as exports of specialty transformers to North American data centres and renewable projects grew.
Company source: SANIL ELECTRIC CO., LTD — Products · Reviewed 2026-09-18
LS ELECTRIC supplies power equipment such as switchgear, breakers and transformers, plus factory-automation products. It manufactures transmission and distribution hardware rather than selling electricity. A 2026 April stock split changed its price level, which matters when reading older charts.
Company source: LS ELECTRIC CO., LTD — Products · Reviewed 2026-09-18
Jeryong Electric makes distribution transformers, including pole-mounted and pad-mounted types. It specialises in the distribution stage rather than ultra-high-voltage transmission gear, with heavy exposure to US exports.
Company source: DART company overview — CHERYONG ELECTRIC CO.,LTD. · Reviewed 2026-09-18
KEPCO KPS maintains and overhauls power plants and transmission and substation equipment. It is a service company that keeps installed assets running rather than a manufacturer, and it is also mapped to the nuclear chain.
Company source: KEPCO Plant Service & Engineering Co., Ltd — Business overview · Reviewed 2026-09-18
Iljin Electric makes power cables alongside transformers and breakers. Straddling both wire and heavy electrical equipment, its earnings mix differs from that of transformer specialists.
Company source: ILJIN ELECTRIC CO.,LTD — Products · Reviewed 2026-09-18
Hyosung Heavy Industries makes ultra-high-voltage transformers, breakers and other transmission and distribution equipment. North American transformer demand weighs heavily on its results.
Company source: DART company overview — Hyosung Heavy Industries Corporation · Reviewed 2026-09-18
HD Hyundai Electric manufactures transformers, switchgear and rotating machines. It is close to a pure-play power-equipment maker, with North American and Middle Eastern transformer orders driving results.
Company source: HD HYUNDAI ELECTRIC CO.,LTD — Products · Reviewed 2026-09-18