KOSPI surges 5.9% as chipmakers rally on shareholder returns
South Korea's KOSPI index rose 5.89% to 6,852.58, driven by gains in SK hynix (up 12.73%) and Samsung Electronics (up 9.49%) due to expectations of increased shareholder returns. SK hynix announced a 40 trillion won share buyback program, while Samsung is reportedly planning a 100 trillion won return plan. Foreign investors bought 1.7 trillion won of shares, and U.S. Treasury yield declines boosted risk appetite.
How this was made

The 30-second read
Why it matters
The buyback announcement is a primary corporate action that directly drove a double‑digit price move, offering a clear trading catalyst.
Market read
The event underscores strong capital return trends in the Korean semiconductor sector, boosting overall market sentiment.
What to watch
Potential regulatory scrutiny of large buybacks in Korea and currency fluctuations affecting foreign investor appetite.
Background
KOSPI rallied sharply on Thursday as SK hynix’s announced buyback and Samsung’s rumored return program lifted semiconductor stocks.
Ticker impact
SK hynix announced a 40 trillion won share buyback and cancellation program, fueling a 12.73% price surge.
Expect continued buying pressure; short‑term target +8‑10% if execution proceeds as announced.
Buyback size (~$30 B) is material for a mid‑cap Korean chipmaker and coincides with a sharp intraday rally.
Market effects
Other Korean chipmakers may see spillover buying as investors anticipate similar return initiatives.
KOSPI’s 5.9% jump lifts broader South Korean equity sentiment.
Boosts risk appetite for semiconductor exposure worldwide, especially in AI‑related memory markets.
Counterpoint
If the buyback is funded by debt, leverage could rise, posing downside risk if chip demand softens.
Key entities
- companySK hynix
Korean memory chipmaker (ticker 000660.KS) announcing a 40 trillion won buyback.
- companySamsung Electronics
Korean conglomerate whose stock also rose on expectations of a large shareholder‑return program.



