Source: The Korea Times

What happened

According to The Korea Times, the KOSPI closed at 6,595.45 on Friday, up 17.91 percent — a record daily percentage and point gain — after chip stocks ripped higher. The index jumped at the open, triggering a buy-side sidecar at 9:06 a.m., and kept climbing. The only prior double-digit one-day rise Times cites was Oct. 30, 2008.

Foreign investors bought a net 7.22 trillion won (about US$5.06 billion); institutions added 1.18 trillion won. Retail investors net sold 8.25 trillion won.

The breakdown

SK hynix surged 29.95 percent to 1,718,000 won, touching the 30 percent daily limit. Samsung Electronics jumped 26.81 percent to 262,500 won — its biggest daily percentage gain on record, Times reports. That erased three-session damage: SK hynix had fallen 29.9 percent and Samsung 19.34 percent through Thursday.

Stronger cloud results from U.S. tech names including Microsoft and Amazon eased fears that AI data-center spend was stalling. SK Group Chairman Chey Tae-won’s Thursday open-market buy of 3,620 SK hynix shares (about 4.9 billion won) — his first personal SK hynix purchase, just under the 5 billion won advance-disclosure threshold — also supported sentiment.

Analysts warned the bounce does not kill volatility. Kiwoom’s Han Ji-young noted KOSPI failed to hold a >5 percent gain the prior day despite Samsung’s upbeat call, suggesting sellers may still fade rallies. JPMorgan’s Mixo Das called valuations attractive and said leveraged-ETF deleveraging looked largely done. Separately, the ₩30 million cash deposit for single-stock leveraged ETFs took effect Friday. Kosdaq rose 11.63 percent to 719.76. The won closed at 1,424.0 per dollar, stronger by 13.4 won.

Why it matters outside Korea

Anyone with Korea equity exposure, chip supply contracts, or FX-linked remittances should treat Friday as a whiplash day, not a new permanent floor. Foreigners bought while retail sold into the spike — a classic “who is left holding” question for the next session.

If you only read the plunge briefs from earlier in the week, update the map: Microsoft/Amazon earnings, not domestic rate news, were the spark Times and the tape priced.

What travelers and expats should watch

• Do not chase Friday’s close as “safe”: Kiwoom’s overhang warning means Monday can still gap either way — size positions for volatility, not celebration.
• Brokerage cash rules still bite: the new ₩30M leveraged-ETF cash gate started Friday; a green KOSPI day does not reopen loose collateral.
• FX remittance timing: a stronger won at 1,424 changes dollar→won math versus midweek levels — re-check large transfers.
• No personalized buy/sell call: this is a microstructure and calendar brief, not investment advice.

Context

Read this as record rebound after a three-day chip rout, not as proof the AI cycle is permanently healed. Times’s operational stack is +17.91% / ₩7.22T foreign buy / SK +29.95% / Samsung +26.81% / sidecar 9:06. Korelay’s frame: update risk and remittance calendars; leave portfolio instructions to licensed advisors.

Korelay take

Read this as record rebound after a three-day chip rout, not as proof the AI cycle is permanently healed. Times’s operational stack is +17.91% / ₩7.22T foreign buy / SK +29.95% / Samsung +26.81% / sidecar 9:06. Korelay’s frame: update risk and remittance calendars; leave portfolio instructions to licensed advisors.

Editor note: Desk reporting supplies the timeline; Korelay adds the overseas behavior layer (what to change, what not to assume, what to re-check). If you only need the wire facts, open the primary link in Source.

Source

The Korea Times: KOSPI rockets 18% in record-breaking rally — paraphrased for briefing; analyst views attributed; read the original for full detail.