At the Oct 13 close, 2 rose and 2 fell, with a median move of +0.4%. Of the 4 stocks with a prior-session comparison, 2 improved relative strength and 2 improved momentum.
Compare 4 tracked South Korean companies in semiconductor test: what they do, where they fit in the industry, and their local share prices.
Wafer/package testing, test sockets, and probe components
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: DOOSAN TESNA Inc.. This is a multi-factor score, not relative strength alone.
| Company / listing | Close (KRW) | Change | Market cap (KRW) | Composite score |
|---|---|---|---|---|
| DOOSAN TESNA Inc.KOSDAQ · 131970 | 133,0002026-10-13 | +7.43% | 2.6T | 76.82026-10-13 |
| LEENO Industrial IncKOSDAQ · 058470 | 79,6002026-10-13 | +1.92% | 6.1T | 50.12026-10-13 |
| ISC Co., LTD.KOSDAQ · 095340 | 183,7002026-10-13 | -4.07% | 3.9T | 43.02026-10-13 |
| Nepes Ark CorporationKOSDAQ · 330860 | 32,0002026-10-13 | -1.08% | 389.9B | 42.12026-10-13 |
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.
Doosan Tesna performs wafer testing for system semiconductors under contract. Its automotive and image-sensor work gives it a cycle distinct from memory.
Company source: DART company overview — DOOSAN TESNA Inc. · Reviewed 2026-09-18
Leeno Industrial makes test sockets and probe pins, consumables that connect chips to testers rather than the testers themselves. Short replacement cycles tie sales to utilisation.
Company source: DART company overview — LEENO Industrial Inc · Reviewed 2026-09-18
ISC makes semiconductor test sockets including silicone rubber types, competing in the same consumable niche as Leeno.
Company source: DART company overview — ISC Co., LTD. · Reviewed 2026-09-18
Nepes Ark specialises in testing system semiconductors, verifying electrical behaviour of finished chips rather than packaging them.
Company source: DART company overview — Nepes Ark Corporation · Reviewed 2026-09-18