At the Oct 13 close, none rose and 5 fell, with a median move of −6.3%. Of the 5 stocks with a prior-session comparison, 2 improved relative strength and 2 improved momentum.
Compare 5 tracked South Korean companies in network components & equipment: what they do, where they fit in the industry, and their local share prices.
RF, optical, routing, high-layer PCB, telecom components, and network equipment
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: ISUPETASYS CO.,LTD. This is a multi-factor score, not relative strength alone.
| Company / listing | Close (KRW) | Change | Market cap (KRW) | Composite score |
|---|---|---|---|---|
| ISUPETASYS CO.,LTDKOSPI · 007660 | 117,2002026-10-13 | -3.06% | 8.6T | 64.12026-10-13 |
| SAMSUNG ELECTRO-MECHANICS CO.,LTDKOSPI · 009150 | 1,363,0002026-10-13 | -8.34% | 101.8T | 50.22026-10-13 |
| TAIHAN Fiberoptics Co.,LTDKOSDAQ · 010170 | 14,6702026-10-13 | -6.68% | 2.3T | 47.62026-10-13 |
| RFHIC CORPORATIONKOSDAQ · 218410 | 53,7002026-10-13 | -6.28% | 1.4T | 46.52026-10-13 |
| Ubiquoss Inc.KOSDAQ · 264450 | 10,9902026-10-13 | -1.08% | 161.2B | 45.42026-10-13 |
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.
ISU Petasys makes high-layer-count printed circuit boards for network equipment and AI servers, supplying the boards inside rather than the equipment itself.
Company source: DART company overview — ISUPETASYS CO.,LTD · Reviewed 2026-09-18
Samsung Electro-Mechanics supplies passive components such as MLCCs and inductors, plus RF modules, used in network equipment and handsets. It is a component supplier to that equipment, not a network operator or base-station maker.
Company source: SAMSUNG ELECTRO-MECHANICS CO.,LTD — Products · Reviewed 2026-09-18
Taihan Fiberoptics makes optical fibre and cable. It supplies the physical lines rather than operating networks.
Company source: DART company overview — TAIHAN Fiberoptics Co.,LTD · Reviewed 2026-09-18
RFHIC makes gallium-nitride radio-frequency amplifiers for telecom base stations. The same technology serves defence radar, which is why it also sits in the defence chain.
Company source: DART company overview — RFHIC CORPORATION · Reviewed 2026-09-18
Ubiquoss makes access switches and optical transmission equipment for carriers, so its orders follow their capital plans.
Company source: DART company overview — Ubiquoss Inc. · Reviewed 2026-09-18