Daily Pulse: August 25, 2026
KOSPI +0.68% | KOSDAQ +1.70% | Foreign Net Sell KRW 3.69T (~$2.66B) while KOSPI gains
The Number That Matters
Foreign investors sold KRW 1.998T (~$1.44B) of SK Hynix and KRW 1.257T (~$907M) of Samsung Electronics in a single session. The combined exit totaled KRW 3.255T (~$2.35B) from two names alone. The KOSPI rose 0.68% anyway. Treasury buybacks absorbed what foreign hands were selling.
Where the Money Went
Foreign net selling of KRW 3.69T (~$2.66B) concentrated almost entirely in semiconductors: SK Hynix KRW 1.998T (~$1.44B), Samsung Electronics KRW 1.257T (~$907M), Samsung Electronics preferred KRW 324.2B (~$234M). Against that, foreigners bought Samsung Electro-Mechanics KRW 50B (~$36M), HD Hyundai Heavy Industries KRW 29.2B (~$21M), and LIG Defence and Aerospace KRW 19B (~$14M). Institutions countered with KRW 1.19T (~$859M) net, led by SK Hynix KRW 328.1B (~$237M), Doosan Enerbility KRW 99.3B (~$72M), and Hyundai Engineering and Construction KRW 64B (~$46M). Retail absorbed KRW 913.1B (~$659M) net, buying KRW 698.6B (~$504M) of Samsung Electronics and KRW 618.9B (~$447M) of SK Hynix. No single stock saw simultaneous foreign and institutional buying.
Why the Market Moved
1. Samsung Electronics and SK Hynix treasury buybacks provided a bid directly against KRW 3.255T (~$2.35B) of foreign semiconductor selling, preventing an index collapse.
2. SOX fell 2.70%, yet KOSPI closed positive: the decoupling was structural, not accidental.
3. Korean government bond yields fell across the curve, with the 30-year at 4.632%, supporting equity valuations at the margin.
The Uncomfortable Question
Samsung Electronics and SK Hynix announced KRW 110T (~$79.5B) in shareholder returns two sessions ago. Foreigners responded by selling KRW 3.69T (~$2.66B) today, extending their net selling for a third consecutive session. The question is whether the treasury buyback mechanism is genuinely absorbing foreign exit pressure, or whether it is delaying a price discovery process that will resume the moment buyback capacity runs out.
Key Disclosures Today
Hybe (HYBE) filed a treasury share disposal decision on DART, signaling intent to sell previously repurchased shares back into the market.
KoreaAlpha Take
The index gained on the day foreigners sold KRW 3.69T (~$2.66B). That is not a sign of market strength. It is a sign that corporate treasury desks are now the marginal buyer in Korean large-cap semiconductors. Institutions bought SK Hynix at the top of their book, but no single name drew simultaneous foreign and institutional conviction. The unresolved question is whether buyback-supported prices reflect fair value or a temporary floor that foreign sellers will test again once the pace of repurchase slows. The trade is simple: watch the daily buyback disclosure volumes for Samsung Electronics and SK Hynix against the pace of continued foreign selling.
Data sources: Korea Exchange, DART, Naver Finance, Bloomberg
Research only. Not investment advice. KoreaAlpha does not provide personalised recommendations.
Flow figures are KRX investor-type trading value across all listed boards (KOSPI, KOSDAQ, KONEX), common stock only, excluding ETF, ETN and ELW; institutions = the KRX institutional total investor type.
