Daily Pulse: August 11, 2026
KOSPI +0.73% | KOSDAQ +0.39% | Foreign net buy KRW 45B (~$32M), Samsung Electronics drew KRW 584B (~$412M) in foreign buying while SK Hynix absorbed KRW 299B (~$211M) in foreign selling on the same session
The Number That Matters
Samsung Electronics returned to the top of the foreign buy list for the first time in four sessions. On the same day, SK Hynix absorbed KRW 299B (~$211M) in foreign selling. SOX fell 2.94%. The semiconductor pair that defines KOSPI direction moved in opposite directions on a day the global semiconductor index declined, that split is the structural fact this session leaves behind.
Where the Money Went
Foreign buying concentrated in Samsung Electronics (+KRW 584B, ~$412M), SK Square (+KRW 65B, ~$46M), and Celltrion (+KRW 64B, ~$45M). On the sell side: SK Hynix (-KRW 299B, ~$211M), Samsung Electro-Mechanics (-KRW 47B, ~$33M), and LG Electronics (-KRW 43B, ~$30M). Institutions added KRW 30B (~$21M); retail sold KRW 71B (~$50M). No foreign-plus-institution conviction overlap was identified. Investor deposits stood at KRW 104.2T (~$73.5B) as of August 7, the most recent figure available, published with a lag.
Why the Market Moved
1. Foreign re-entry into Samsung Electronics provided the primary directional signal on a low-volume session.
2. Hyundai Motor's labour union escalated to twelve-hour strikes after returning from summer recess, adding near-term production disruption risk to the auto complex.
3. The won closed in the 1,410s range, with yen weakness and month-end dividend payments flagged as technical headwinds to further KRW appreciation.
The Uncomfortable Question
Foreign investors bought KRW 584B (~$412M) of Samsung Electronics and simultaneously sold KRW 299B (~$211M) of SK Hynix, on a day SOX fell 2.94%. If this is sector re-entry, the two largest memory names do not move in opposite directions while the global semiconductor index declines. The more precise reading: foreign capital re-entered Samsung Electronics as a valuation trade while leaving SK Hynix, the name with deeper HBM exposure, in the sell column. One session of selective buying proves nothing about the direction of the broader semiconductor allocation.
KoreaAlpha Take
Samsung Electronics back in the foreign buy basket after four sessions is not a semiconductor recovery. It is one name, bought on a day the global semiconductor index fell, while the other half of the pair was sold. For three consecutive sessions, foreign capital rotated through holdcos, defence, and biotech without touching the semiconductor complex directly. Today that changed for Samsung Electronics alone, and did not change for SK Hynix.
The unresolved question is whether this is a selective valuation entry into Samsung Electronics or the first step of a broader re-allocation that eventually pulls SK Hynix back onto the buy list. The trade is simple: watch whether SK Hynix joins Samsung Electronics on the foreign buy list next session.
Data sources: Korea Exchange, DART, Naver Finance
Research only, not investment advice. KoreaAlpha does not provide personalised recommendations.
