KOSPI Plummets Again Amid Persistent Market Uncertainty Over AI Investment Returns Despite Strong Earnings
The KOSPI index fell 4% today, driven by profit-taking in semiconductor giants Samsung Electronics (down 4-5%) and SK hynix (down 4-5%), despite strong AI earnings. Meta's earnings report and Bank of Korea's rate freeze also pressured the market. Foreign and institutional investors turned to net selling.
How this was made

The 30-second read
Why it matters
The combination of sector‑specific profit‑taking and macro‑policy signals creates a bearish short‑term outlook for Korean equities, especially Samsung and SK hynix, while Meta faces pressure from missing guidance.
Market read
The article signals a near‑term bearish bias for Korean equities and AI‑related stocks, with macro policy adding to downside risk.
What to watch
Potential support from foreign investor net buying earlier in the week and any hidden demand for AI chips.
Background
KOSPI opened lower and fell sharply amid profit‑taking in large‑cap semiconductor stocks, a completed treasury buyback, and a hawkish Bank of Korea rate‑freeze statement.
Ticker impact
Samsung Electronics shares fell 4%‑5% as profit‑taking and the end of its KRW 15 trillion treasury buyback pressured the KOSPI.
downward pressure as market prices in profit‑taking and reduced buying support
The article cites a sharp 4‑5% drop and the completion of a large treasury repurchase, which historically removes a price floor.
SK hynix declined 4%‑5% amid profit‑taking and the conclusion of its KRW 40 trillion treasury stock acquisition.
downward as profit‑taking intensifies and buying support wanes
The article notes a sharp drop and the end of a major buy‑back program, removing a key support factor.
Meta posted strong Q3 earnings but omitted next‑year capex guidance and reported a $2.12 bn free‑cash‑flow deficit, prompting market pressure.
downward as investors react to missing guidance and cash‑flow deficit
The article highlights the absence of forward‑looking capex guidance and a cash‑flow shortfall, which can weigh on sentiment.
Market effects
Semiconductor sector faces profit‑taking pressure; AI‑related stocks may see broader pullback.
KOSPI down ~4% as Korean central bank signals possible rate hikes.
Highlights risk of AI‑related equity valuations amid tighter monetary outlook.
Counterpoint
The pullback could present buying opportunities if AI earnings remain strong and the rate‑hike risk is overstated.
Key entities
- central_bankBank of Korea
Frozen benchmark rate at 3.00% and hinted at future hikes.
- companyMeta Platforms
Reported Q3 earnings with no capex guidance and a cash‑flow deficit.


