TCK (064760): Where It Stands — 2026-09-10 Deep Dive
2026-09-10 · semiconductor · TCK data page
As of 2026-09-10 (Seoul close). Live numbers on the TCK data page.
| Metric | Value |
|---|---|
| Close | ₩271,500 |
| Day | +5.44% |
| 5d / 20d / 60d | +12.89% / +18.56% / -1.09% |
| 52w position | 68.7% (₩102,200–₩348,500) |
| MA20 / MA60 | ₩243,425 / ₩227,773 |
Price Action and Technical Positioning
Tokai Carbon Korea (TCK, KRX 064760) closed at ₩271,500 on September 10, 2026, gaining 5.44% on the session. The move demonstrated notable resilience against broader benchmark performance, decoupling from the KOSPI (-0.25%) while outperforming the tech-heavy KOSDAQ (+0.79%).
TCK’s short-term tape reflects accelerating positive momentum. Over the trailing 5-day and 20-day periods, the stock has gained 12.89% and 18.56%, respectively. This 20-day return outpaces the covered Korean semiconductor peer median of +16.32% by 224 basis points. However, the multi-month trend illustrates a sharp mean reversion rather than an uninterrupted bull run: TCK’s 60-day return sits at -1.09%, indicating that the recent three-week surge is recovering ground lost during mid-year weakness.
From a structural perspective, the equity has reclaimed key technical hurdles. At ₩271,500, the stock trades at an 11.53% premium to its 20-day moving average (₩243,425) and 19.20% above its 60-day moving average (₩227,773), confirming a bullish moving-average crossover. TCK currently trades at 68.7% of its 52-week trading band (defined by a low of ₩102,200 and a peak of ₩348,500).
Trading flow on the day was characterized by institutional sponsorship absorbing foreign distribution: domestic institutions recorded net purchases of 178,201 shares, while foreign participants logged a net sale of 143,527 shares.
Fundamental Context: CVD-SiC Consumables and Etch Demand
TCK is the primary pioneer of solid chemical vapor deposition silicon carbide (CVD-SiC) focus rings, holding an entrenched position as a core consumable supplier to tier-1 dry etch original equipment manufacturers (OEMs) such as Lam Research and Applied Materials, as well as end-memory manufacturers Samsung Electronics and SK Hynix.
The primary company-specific catalyst behind TCK’s recent relative strength centers on the operating inflection in memory fabrication:
- NAND Layer Scaling and HARC Etching Intensity: CVD-SiC rings position directly around the silicon wafer during plasma etching to maintain plasma uniformity. As leading-edge 3D NAND transitions deeper into advanced multi-stack vertical architectures (200-to-300+ layers), High Aspect Ratio Contact (HARC) etching requires higher RF plasma power and longer etch step durations. Because higher power accelerates wear on consumables, unit consumption of high-density CVD-SiC rings increases per processed wafer relative to conventional silicon rings.
- Fab Utilization Recovery: The +18.56% 20-day expansion tracks broader domestic semi strength (+16.32% peer median), consistent with rising wafer starts across Korean fab lines. Given that focus rings are replacement consumables tied to fab run rates rather than purely new greenfield capacity additions, TCK’s top-line leverage responds rapidly to rising fab utilization and maintenance spending.
The divergence in institutional buying (+178,201 shares) reflects confidence in consumable replacement volumes into late 2026, contrasting with earlier market concerns surrounding inventory digestion in the memory supply chain.
Risks and Caveats
- Competitive Encroachment and Dual-Sourcing: Following the expiration and invalidation of select legacy patent claims in recent years, domestic competitors (including Hana Materials, KNJ, and Worldex) have qualified CVD-SiC parts with etch OEMs and end-fabs. Continued erosion of TCK’s once-monopolistic share in SiC rings remains an ongoing structural headwind to gross margin preservation.
- Foreign Outflows and Positioning Imbalance: The persistent divergence between foreign selling (-143,527 shares) and institutional absorption (+178,201 shares) highlights ongoing foreign skepticism regarding terminal growth rates, peak margin sustainability, and memory capex cyclicality.
- Distance to 52-Week Highs: Although trading at 68.7% of its 52-week range, TCK sits ₩77,000 (22.1%) below its 52-week peak of ₩348,500. Retesting those highs requires durable confirmation of multi-quarter memory fab utilization increases rather than short-term inventory restocking.
This note was produced by Chip & Cell’s data pipeline with model-assisted analysis. It is not investment advice; verify all figures against primary sources.
Not investment advice. Figures are as of publication and may contain errors — see methodology.