Monday Preview — the weekend in brief
A window setting out only what is needed on Monday morning before the week turns
KOSPI closes the week at 6,977.94, up +11.49% on the week — foreigners net bought ₩6.55tn over five sessions
Korea’s Best Week in Months: KOSPI +11.49%, Foreigners Pour In ₩6.55tn
Korea’s equity market delivered one of its larger weekly advances in the 2026 data set, with the KOSPI gaining +11.49% to close at 6,977.94 — ranked 2nd out of 32 weeks by weekly return.Foreign buying drove the bulk of the move, concentrated on Wednesday and Thursday when foreigners net bought ₩2.84tn and ₩2.11tn respectively, with retail investors selling into each session.Heading into Monday, U.S. benchmarks finished Friday slightly in the red while the Korea ETF EWY edged higher, leaving the directional signal for Seoul mixed rather than clearly positive or negative.
US Friday session confirmed
A window on where the US finished while Korea was closed
Wall Street slips Friday — Nasdaq -0.28%, SOX -0.31%, EWY +0.63%
| Measure | Close | Change | Meaning |
|---|---|---|---|
| Nasdaq | 26,729.16 | −0.28% | U.S. tech — the first signal for Korean chips on Monday |
| S&P500 | 7,785.76 | −0.17% | The broad U.S. market’s temperature |
| SOX semiconductors | 12,417.05 | −0.31% | U.S. semiconductors — the overseas index closest to KOSPI |
| Dow | 53,732.41 | −0.20% | U.S. blue chips |
| EWY (Korea ETF) | 179.74 | +0.63% | Korea as seen from the U.S. — a leading read on foreign sentiment |
| Dollar index | 99.67 | −0.29% | A stronger dollar is a headwind for foreign inflows |
| U.S. 10-year Treasury | 4.7 | +1.19% | Rates — higher is a headwind for growth stocks |
| Nikkei 225 (prior session) | 68,713.8 | +0.59% | Japan’s Friday close — an Asia-sync reference |
| USD/KRW (prior Seoul session) | 1,418.5 | −0.12% | The won — a stronger won favors foreign buying |
U.S. equity benchmarks closed modestly lower on Friday, August 14 (2026): the Nasdaq at 26,729.16 (-0.28%), the S&P 500 at 7,785.76 (-0.17%), the Dow at 53,732.41 (-0.20%), and the SOX at 12,417.05 (-0.31%).The dollar index eased to 99.67 (-0.29%) while the 10-year Treasury yield rose to 4.70% (+1.19% on the day); the won-dollar rate last quoted in Seoul was 1,418.5 (-0.12%), and the Nikkei 225 closed at 68,713.8 (+0.59%) on Friday.EWY, the U.S.-listed Korea ETF, gained +0.63% even as broad U.S. indices fell — a split signal that does not by itself resolve the direction for Monday’s Seoul open; the 2026 regime shows the KOSPI has followed the prior night’s SOX in the same direction in 39 of 139 sessions, moved independently in 46 sessions, and mirrored U.S. moves in various other combinations, so no single-cause reading is reliable.
Weekend news — home and abroad
A window on the news that came over the weekend and what it means for Monday
Weekend wires: household debt crosses ₩2,000tn threshold; U.S.–Iran ceasefire and FOMC minutes in focus for the week ahead
| Date | Layer | News | Implication |
|---|---|---|---|
| 08.16(Sun) 05:47 | Macro | Entering ‘2 Quadrillion ₩ Household Debt’ Era…Financial Soundness Alert as Rates Rise (Yonhapnews(Economy)) | Domestic household leverage at this level may keep the Bank of Korea cautious on any rate easing, which could weigh on rate-sensitive sectors; no single causal link can be assumed, but credit-market stress is worth watching Monday. |
| 08.16(Sun) 07:00 | Geopolitics | [NYSE Weekly Outlook] US-Iran Ceasefire Turning Point…FOMC Minutes & Walmart Earnings in Focus (Yonhapnews(International)) | A U.S.–Iran ceasefire outcome and the release of FOMC minutes this week could shift risk appetite and dollar direction; either development may influence foreign flows into Korean equities, though the direction is not predetermined. |
Monday watch list
A window setting out what to look at first on Monday morning
Monday setup: 59% up-day rate but foreigners net sold on 76% of 2026 Mondays
Monday’s session arrives after a week of outsized gains; the 2026 regime gives a 59% probability of a positive close, but foreigners have been net sellers on 76% of those same Mondays, and the average Monday return is -0.46% — the two statistics point in different directions.The sentiment gauge’s confirmed inputs — 20-day volatility at the 93rd percentile and leverage share at the 71st percentile — suggest the market is not in a low-risk state, though three components remain delayed and the full picture will be clearer after Monday’s open.
What we carry from last week
A window for what to carry from last week into next
What the week’s data leaves behind: ₩6.55tn foreign buying, a 2nd-ranked weekly return, and a neutral sentiment gauge
The week’s data set closes with a domestic market that has re-rated sharply higher on foreign demand, while retail investors absorbed significant selling pressure throughout; whether that foreign bid carries into Monday will be informed in part by the FOMC minutes and geopolitical developments that remain unresolved as of Sunday evening.The judgment is each reader’s own.