GaN) Related Stocks: Costechsys +11.39% Leads Compound Semiconductor Theme to +4.45%, Why So Strong?
GaN) related stocks sat at the center of today's compound semiconductor (SiC/GaN) theme.
The theme averaged +4.45% at the close.
Today's numbers first
- Strong theme at the close: Compound Semiconductor (SiC/GaN)
- Theme average change: +4.45%
- Leading stock: Costechsys (355150) +11.39%
- Weakest stock in theme: RFHIC (218410) +0.42%
Costechsys carried the theme higher.
Still, weaker names like RFHIC are still in the group.
Why did the compound semiconductor theme run?
Compound semiconductors (SiC/GaN) handle higher voltage, frequency, and heat than silicon.
They are used in power chips, RF, 5G, and EV chargers, improving energy efficiency and enabling high-frequency applications.
The theme spans SiC and GaN wafers, device makers, packaging, epitaxy equipment, and material suppliers.
Today the theme posted an average gain of +4.45%.
To tell a single-stock story from a theme-wide move, check the leader and the followers together.
How did the GaN) related stocks move?
| Stock | Market | Change | Checkpoint |
|---|---|---|---|
| Costechsys (355150) | KOSDAQ | +11.39% | Makes high-heat-dissipation package materials for SiC and GaN devices. |
| DB HiTek (000990) | KOSPI | +3.18% | Power semiconductor foundry developing GaN and SiC processes. |
| Wavice (289930) | KOSDAQ | +2.82% | Makes GaN RF chips and transistors. |
| RFHIC (218410) | KOSDAQ | +0.42% | Makes gallium nitride (GaN) transistors and power amplifiers. |
What to check next session
- Confirm whether today's strength came with higher trading value.
- Separate stocks that held gains into the close from those with long upper wicks.
- Watch whether the US-listed ETF and peer company moves continue.
- Look for laggards within the theme, and separate simple low-price rotation from structural momentum.
Dig deeper
- GaN) related and leading stocks for compound semiconductors
- Today's market close briefing: PickStock Insight
- Browse other theme stocks: Theme Explorer
Published 2026-10-21 16:40 KST. Data sources: PickStock theme DB, Yahoo Finance price cache. Generated after checking price outliers and the index reference date. For information only, not investment advice.
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