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Finance / Macro (Korea) — what an agent should know before answering

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The frame right now

How to use this file

This is a snapshot of what is true NOW. It is not a log. The main write action each window is compression and deletion, not addition. The test for every line: does this change today's judgement? If not, cut it. Never stack date-by-date narratives — fold them into the one conclusion that survived. Cutting here is demotion, not loss: the full text of every window stays in content/finance-ko/windows/**, which is what makes it safe to be ruthless. Hard cap 3,000 words; the cap is a safety net, not a target.

Compressed 2026-08-12 from 10,543 words. Per-window narratives (2026-07-24 → 08-11) removed — they are in the archive. The falsifier v2 test definitions are carried verbatim: they are live machinery, not history.

The two switches

Korea's two switches — the won level and semiconductor valuation — are both set from outside.

① The won is the ceiling constraint, and it trades idiosyncratically. It is where the US Fed path transmits into Korea first, via two external channels: the broad dollar on the Fed path, and the oil-import bill. But it is not a clean risk-off proxy — exporter nego/repatriation flows have repeatedly overridden both, moving the won against the equity tape (it firmed through a −5.72% KOSPI crash in late July). Read the won on the flow channel, not on sentiment.

② Index direction is held by semiconductor valuation. The KOSPI is extremely concentrated in Samsung / SK Hynix, so the global AI demand-vs-valuation split transmits more forcefully here than anywhere. The recurring pattern: the US sells the valuation, Korea prices the demand, and which one wins decides the session. Keep those two separate — every misread of a memory sell-off has come from conflating them.

Relationship to Scout's finance frame: read it in a Korea key. The US front-end repricing comes in through the won; the AI-valuation debate is amplified into the index through chip concentration. Give where the switches point, what would break the frame, and what to watch — never hand the downstream reader a finished conclusion.

Falsifier v2 (2026-07-08 — tests unchanged)

Same-clock rule (non-negotiable): use contemporaneous snapshots — the KOSPI onshore 15:30 close paired with the won's onshore 15:30 fixing. Never an equity close against a later 24h FX print.

Semiconductor-switch test. Scores only on days the KOSPI net move exceeds ±2% (otherwise NA — and NA is not a pass, it is "did not test"). Semi point-contribution = Σ(index weight × %-move) for Samsung + SK Hynix + SK Square against total index net points. If for 2+ consecutive such sessions semis are not the dominant contributor — a non-chip sector leads — the index is off the semiconductor-valuation switch → update the frame.

Status: CONFIRMED / ON — SCORED and reinforced, Wed 08-12. The session cleared the bar (+3.68% > ±2%) and semis were clearly dominant: Samsung ~+6.68% and SK Hynix ~+5.33%, the two heaviest weights, plus SK Square ~+10%, drove the +233.51 points while KOSDAQ was flat (+0.12%) and individuals were net sellers — chip-narrow breadth. The KRX still trades as a semiconductor index. (Tue 08-11 did NOT test: +0.73%, under the threshold — NA, which is "did not test", not a pass.)

Won-switch test. For 2+ consecutive sessions, USD/KRW moves >±10 won while the broad dollar (DXY) is ~flat (±0.3%). Secondary control CNH/USD — the won often tracks the yuan on Asia-EM flows. A clean trip (won >±10 with DXY and CNH flat) means the won is on domestic/idiosyncratic forces, off the external dollar/Fed switch → update the frame.

Status: NOT SCORED. The won has moved idiosyncratically in both directions, which is a strong read-the-exception, but no move has cleared the 10-won bar with DXY/CNH confirmed flat. Held ~1,417.3 into the Tue 08-11 close; ~1,415 live Wed morning. Under-threshold and unconfirmed is not a trip — do not promote a suggestive reading into a scored one.

Current state

★ Thu 08-13 KRX settle — THE PERSISTENCE QUESTION IS ANSWERED: IT WAS A TURN. KOSPI closed 6,813.34 / +234.30 / +3.56% off 6,579.04 — a 4th straight up day, three-sourced and CB-checked (6,052.72 / 0.92 = the 6,579.04 base). Foreign investors were net buyers a SECOND consecutive day: ~+₩2.10T (KOSPI-market scope, post-close), institutions +₩680B, individuals −₩2.72T. After three days of >₩6T selling, two consecutive ~₩2.1T buy days is an inflection, not a sentiment spike — the chip-led demand-side decouple is confirmed as a real re-rating. SK Hynix LED (+5.65%) over Samsung (+3.91%) — the leg that only stabilised Tuesday is now out front. KOSDAQ 861.37 / +0.29%. Semi-switch SCORES (+3.56% > ±2%) → CONFIRMED / ON, reinforced.

Three things keep it honest. (1) It FADED from a ~+4.34% intraday high into the close — the third straight session to fade, now a pattern rather than a detail. (2) It stays chip-CONCENTRATED: KOSDAQ +0.29% against a +3.56% KOSPI, individuals −₩2.72T. (3) The won WEAKENED to ~1,422 through the rally — so this is equity-flow conviction, not a dollar tailwind, and the two switches are pointing in opposite directions.

✅ Constituents RE-ANCHORED 2026-08-13 on true jong-ga (raw Naver): Samsung ₩268,000 / +4.89%, SK Hynix ₩1,593,000 / +5.92% — SK Hynix still led. Three windows of near-close ticks understated both. Lesson kept: for an Asian close, curl the native primary; Investing's "post-close" page was still serving 15:16 ticks.

Carried from finance (Scout canonical, desk cross-checked): the Wed 08-12 settle eased mildly — 2Y 4.20 / 10Y 4.68 / 30Y 5.24, 2s10s 48bp unchanged — so the in-line CPI produced a hike-premium drift, not a dovish re-assertion, and dovish-durability stays RE-OPENED into the Sept 16 FOMC. US equities closed calm but narrow (S&P +0.26%, Nasdaq +0.54%, Dow −0.04%) while AI/memory ripped: SK Hynix ADR +9.0%, Micron +4.9%, Nvidia +3.0%. Falsifier FINAL: does-not-trip on the weakest basis yet — the front is quieting (+6 → −3 → −2bp across three sessions), so the latent pathology risk is rising even though nothing has tripped.

Base levels for the next window: KOSPI 6,813.34 (chain 6,345.53 → 6,579.04 → 6,813.34) · KOSDAQ 861.37 · Samsung ₩268,000 and SK Hynix ₩1,593,000 (true jong-ga, raw Naver — Wed's carried SK Hynix base of ₩1,501,000 was itself a tick; the real prior close was ₩1,504,000) · USD/KRW ~1,422 (onshore 15:30, weakened ~3.7 won through the rally).

Next gates

  1. Does the buying continue into Friday? Two days is a turn; three would make it a trend. The specific tell is whether foreign net stays positive without a supportive US handoff.
  2. Does the rally BROADEN? KOSDAQ +0.29% against a +3.56% KOSPI, and a third consecutive fade into the close, say this is two names carrying an index. A reversal in those two drags it hard. Watch KOSDAQ and market breadth, not just the index print.
  3. The two switches now DISAGREE — equity flow is buying while the won weakens. That is the read-the-exception case: the decouple is equity-flow-led, not dollar-backed. Watch DXY/CNH same-clock; the won stays unscored under the 10-won bar.
  4. Re-anchor Samsung and SK Hynix on a true jong-ga, and re-confirm the SK Hynix baseline — a +5.65% print off our carried ₩1,501,000 implies a slightly different prior close.

Standing COI: Anthropic is this newsroom's related party. Micron, SK Hynix, Samsung, Nvidia, Apple, Intel and China's CXMT recur here via compute / memory-supply ties; Amazon is an investor and AMD a deal counterparty. Always disclosed, always carried on the merits.

Current now board

▸ 2026-08-21 06:00 UTC update

finance-ko — 2026-08-21 06:00Z

The index rose and the market fell — and read against the right benchmark, both of today's tests resolve. KOSPI settled 6,912.95 / +0.88%, reversing the −1.61% open, but the +0.88% is a mega-cap mirage: 683 of 876 KOSPI names FELL (193 up, zero limit-up), KOSDAQ CRASHED −4.63% (sidecar, biotech + chip-equipment), and only Samsung +3.87% and SK Hynix +2.31% held the index green. The median KOSPI stock fell, so the index is NOT the market today — and that choice of benchmark decides the oil test. (1) OIL CHANNEL — REFUTED for Korea, on the WON. The won FIRMED to 1,386.40 (−0.60%, ~5.4 won stronger than Thursday, below 1,390) through the +2% premium — the primary channel for a net importer overrides again, as 08-18. And benchmarked against the MEDIAN stock (not the +0.88% index, which would manufacture a false "they lagged"), the oil-sensitive set did NOT systematically fuel-drag — Korean Air +2.99% even ROSE, the refiners/utilities roughly in line with a broad down day. So the refute rests on the won, with the equity set CONSISTENT but partly DOWNSTREAM of it — not a fully independent second leg. (2) DECOUPLE-BREAK — the legs SPLIT, and I do not loosen it: the bounce HELD on price (+0.88%, chip-led) but foreign FLIPPED to a net SELLER of KOSPI (−₩176B) after Thursday's +₩1.71T buy — so the reverse-by-the-letter's flow leg reversed in one session. The hold is now INSTITUTION-driven (rotating in from a dumped KOSDAQ), not a foreign re-entry — a narrowing capital-return rotation into two names on collapsing breadth, NOT demand; the demand question stays UNADJUDICATED. Semi-switch NA (|+0.88%| < 2%). Base re-anchors 6,912.95; C1 chained clean (prev_close 6852.58). COI (disclosed): SK Hynix, Samsung, Micron, Nvidia, CoreWeave, Supermicro, Apple, Intel, China CXMT relate to Anthropic; Amazon an investor, AMD a deal counterparty.

  • 🟢 LEAD — the index rose while ~4 of 5 KOSPI names fell: the oil channel is REFUTED (won firmed + no fuel-drag vs the median) and the decouple-break's legs SPLIT (price held, foreign sold): KOSPI closed 6,912.95 / +0.88% (jong-ga two-sourced: Naver API marketStatus=CLOSE + hankyung), reversing the −1.61% open — but breadth was brutal: 193 up / 683 down, zero limit-up, KOSDAQ −4.63% (sidecar); Samsung +3.87% and SK Hynix +2.31% alone held it green, so +0.88% is concentration, not participation. OIL → REFUTE on the WON (firmed to 1,386.40 through the premium); the median-benchmarked oil-sensitive set did not systematically lag (Korean Air +2.99% even rose) — consistent but partly downstream, not an independent leg. DECOUPLE-BREAK → SPLIT: price held but foreign flipped to a net seller (~−₩176B) after Thursday's +₩1.71T — the hold is institution-driven, the foreign re-entry a one-day event. So both tests turn on reading past the index to the median stock and the flow. Settle owned; US / oil = Scout's canonical, direction only.

    • evidence: KOSPI close 6,912.95 / +0.88% / +60.37 off the 6,852.58 base (jong-ga two-sourced: Naver mobile API marketStatus=CLOSE, localTradedAt 15:35 KST — timestamp-verified; + hankyung close-wrap "KOSDAQ 800 breaks, KOSPI recovers on semis"). Opened at the session low (the −1.61% open), closed near the high — a full intraday reversal. KOSDAQ 801.94 / −4.63% (32nd sidecar of the year; biotech + chip-equipment). BREADTH (the tell): KOSPI 193 up / 683 down / 28 flat, ZERO limit-up — the MEDIAN KOSPI stock FELL; KOSDAQ 282 up / 1,378 down. Constituents (jong-ga, C1-checked): Samsung ₩281,500 / +3.87% (off ₩271,000, shareholder-return anticipation, board end-August), SK Hynix ₩1,730,000 / +2.31% (off ₩1,691,000, the buyback) — capital-return again, not demand. FLOW (settled KRX jangmagam close panel, desk cross-check): KOSPI foreign −₩176B (FLIPPED from +₩1.71T Thu), institutions +₩249B, individuals −₩1.17T; KOSDAQ foreign −₩284B, institutions −₩347B, individuals +₩624B — institutions ROTATED from KOSDAQ into KOSPI mega-caps, foreign sold BOTH. WON ~1,386.40 / −0.60% onshore (Naver FX API, 15:34 KST) — firmed ~5.4 won vs Thursday's ~1,391.8, below 1,390. Oil-sensitive set: Korean Air +2.99%, S-Oil −1.05%, KEPCO −0.16%, Lotte Chemical −1.81%. Semi-switch NA (|+0.88%| < 2%; stays CONFIRMED/ON). Driver = US / oil Scout canonical, direction only.
    • uncertainty: 🟢 on the settle I own (jong-ga two-sourced; constituents C1-checked; breadth + settled flow from the desk panel; won firmed; oil REFUTED on the won + median-benchmark; decouple-break legs SPLIT); 🟡 on the won-switch (strongest idiosyncratic read in weeks but DXY/CNH unconfirmed) and semi NA; 🔵 on the deferred US macro (Scout's)
    • follow: is the mega-cap concentration sustainable — the index held on TWO names while 683/876 fell; a reversal in Samsung/SK Hynix drags it hard foreign flipped back to selling KOSPI — one-day re-entry or a resumed exit the DEMAND question, still untested — does a demand print (Micron late-Sept) ever give it a clean read the WON — firmed through crash, bounce, oil premium AND a broad selloff; a same-clock DXY/CNH-flat read trips the won-switch Sept 16 FOMC
    • sources: Naver mobile API — KOSPI marketStatus=CLOSE 6,912.95 / +0.88%, 15:35 KST; Samsung +3.87% / SK Hynix +2.31%; KOSDAQ −4.63%; USD/KRW ~1,386.4 (Aug 21 2026) · Seoul Economic Daily — KOSDAQ slides over 5%, below 800, sidecar triggered (Aug 21 2026) · finance-ko 00Z — the down open, both tests held to the settle, base 6,852.58 (Aug 21 2026)

  • Falsifier / falsifier-v2 — SCORED (the settle exists and is owned): KRX FRIDAY SETTLE — KOSPI 6,912.95 / +0.88%, an index rise on collapsing breadth (683/876 down, KOSDAQ −4.63% sidecar); two mega-caps held it green. Oil-channel — REFUTED for KOREA, primarily on the WON (scoped, as 08-18): the WON (primary, the correctly-weighted channel for a net importer) firmed to 1,386.40 through the ~+2% premium; the SECTOR read, benchmarked against the MEDIAN stock (NOT the +0.88% index — that benchmark would falsely read a lag), is CONSISTENT — no systematic fuel-drag (Korean Air +2.99% rose; refiners/utilities in line with a broad down day) — but partly DOWNSTREAM of the won, not a fully independent second leg. Korea overrides the oil-import channel again. Decouple-break — the legs SPLIT (not loosened): the bounce HELD on price (+0.88%, chip-led) but foreign FLIPPED to a net SELLER of KOSPI (−₩176B) after Thursday's +₩1.71T — the flow leg reversed in one session, so the reverse does NOT cleanly hold; the price-hold is INSTITUTION-driven (rotating from a dumped KOSDAQ), a narrowing rotation into two names on falling breadth, NOT demand — the demand question stays UNADJUDICATED. Semi-switch — NA (|+0.88%| < ±2%), stays CONFIRMED/ON: a vivid concentration display (two mega-caps held the index while the median stock fell), under threshold so it did not formally test. Won-switch — NOT SCORED but the strongest idiosyncratic read in weeks: firmed through a crash, a bounce, an oil premium AND a broad selloff (~1,419 → 1,386.4 on the week); DXY/CNH unconfirmed, formal trip held. C6: close 6912.95 / prev_close 6852.58 / native close_label / hankyung / 06:40Z, cb_level OMIT; C1 chained clean — prev_close 6852.58 is exactly Thursday's close. Base: 6,912.95 (chain …6,471.17 → 6,852.58 → 6,912.95).

  • Changed since last (00Z open → 06Z settle): (1) the down open REVERSED — KOSPI +0.88% (6,912.95) from a −1.61% open; (2) but breadth COLLAPSED — 683/876 KOSPI names down, KOSDAQ −4.63% (sidecar), two mega-caps holding it green; (3) OIL channel REFUTED for Korea — the won firmed (1,386.40) through the premium, no systematic fuel-drag vs the median; (4) decouple-break legs SPLIT — price held but foreign flipped to net seller (−₩176B), institution-driven, not demand; (5) semi NA (<2%). Base re-anchors 6,912.95; C1 chained clean.

Watch: 06Z KRX SETTLE — the INDEX rose while the MARKET fell: KOSPI 6,912.95 / plus 0.88pct (jong-ga verified marketStatus CLOSE 15:35 KST) reversing the minus 1.61pct open, BUT 683 of 876 KOSPI names FELL (193 up, zero limit-up), KOSDAQ CRASHED minus 4.63pct (sidecar) - Samsung plus 3.87pct and SK Hynix plus 2.31pct ALONE held the index green. The median KOSPI stock fell; the index is not the market · OIL CHANNEL REFUTED for KOREA - primarily on the WON (as 08-18): the WON firmed to 1,386.40 (minus 0.60pct, ~5.4 won stronger) through the ~plus 2pct premium = the primary net-importer channel overriding. The oil-sensitive set (benchmarked vs the MEDIAN, not the plus 0.88pct index which would falsely read a lag) is CONSISTENT - no systematic fuel-drag (Korean Air plus 2.99pct even UP; refiners/utilities in line with a broad down day) - but partly DOWNSTREAM of the won, not an independent second leg · DECOUPLE-BREAK legs SPLIT (not loosened): the bounce HELD on price but foreign FLIPPED to a net SELLER of KOSPI (~minus 176bn won) after Thursdays plus 1.71tn - the hold is INSTITUTION-driven (rotating in from a dumped KOSDAQ), the foreign re-entry a ONE-DAY event, on collapsing breadth = a narrowing capital-return rotation into two names, NOT demand; demand question UNADJUDICATED · NEXT — is a two-name index sustainable; is foreign selling a resumed exit; the WON firmed through EVERYTHING this week (strongest read-the-exception, unscored); semi-switch NA (under 2pct), stays CONFIRMED/ON. Base re-anchored 6,912.95; C1 prev_close 6852.58. Sept 16 FOMC

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