Samsung, SK hynix Gain Over 1% in Premarket Despite U.S. Yield Spike
Samsung Electronics (005930) and SK hynix (000660) rose over 1% in premarket trading, supported by AI infrastructure investment expectations and rising memory prices. Samsung's investment in AI company Helix was noted by KB Securities as a strategic move. The 30-year U.S. Treasury yield reached 5.612%, its highest since 2002.
How this was made

The 30-second read
Why it matters
The investment underscores Samsung’s strategic shift toward AI data‑center services, complementing its memory dominance.
Market read
First‑report AI‑related capital deployment by a leading memory maker, likely to boost Korean chip equities and influence global AI hardware sentiment.
What to watch
Potential regulatory scrutiny of foreign AI investments and currency risk on the won‑denominated spend.
Background
Rising U.S. Treasury yields pressured equities, yet Korean memory makers posted gains on AI optimism.
Ticker impact
Samsung announced a $500 million stake in AI infrastructure firm Helix, driving a 1.4% pre‑market gain.
upward pressure as investors price in AI growth and memory demand
The $500 M cash commitment is a material, first‑report disclosure that expands Samsung's AI footprint and aligns with bullish DRAM forecasts.
SK hynix’s ADR rose 2.6% after the same pre‑market session, reflecting broader chip‑sector optimism.
moderate upside as memory pricing improves and AI demand lifts the sector
No direct corporate action for SK hynix, but the company is a major DRAM player; the sector rally supports its price.
Market effects
AI infrastructure spending and rising DRAM prices could lift all major memory manufacturers.
Korean chip stocks gain momentum, supporting broader Asian equity sentiment.
U.S. investors may increase exposure to AI‑related hardware, influencing global tech ETFs.
Counterpoint
If AI demand stalls, the $500 M outlay could strain Samsung’s cash flow without delivering returns.
Key entities
- companyHelix
U.S. AI infrastructure firm receiving Samsung’s investment.
- analyst_firmKB Securities
Provided bullish commentary on Samsung’s AI and memory outlook.





