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The close has not been settled — KOSPI stands recorded as both 6,879.87 and 6,912.37 — Korea Market After-Hours, Aug 27, 2026

As of this edition today’s close has not been settled. The collected data records KOSPI as both 6,879.87 and 6,912.37, and KOSDAQ as both 834.39 and 837.65.The sources disagree and carry a marker saying figures may be under correction immediately after the close, so this edition does not call either

The Silmari
A daily data newsletter on the Korean stock market — silmari, ‘a clue: the loose end that unravels the knot’
⑤ After-Hours 18:002026.08.27 Thu · No. 24Neutral — the sentiment gauge reads 0.297. Today’s close still stands as two figures, so the day cannot be summed up as finished. Market breadth was again not received — the last confirmed readings are KOSPI 2.02 and KOSDAQ 1.3 on 24 August, with no values for the three sessions since.
⑤ After-Hours · published 18:00 KST · after the regular session · Note: flow figures are preliminary as published just after the close; the exchange’s confirmed figures appear in that day’s Final Edition (20:00 KST).
01 · Verdictprovisional — sources reconciling (FDR 6879.87 / Naver 6912.37)

verdict at evening

The close has not been settled — KOSPI stands recorded as both 6,879.87 and 6,912.37

As of this edition today’s close has not been settled. The collected data records KOSPI as both 6,879.87 and 6,912.37, and KOSDAQ as both 834.39 and 837.65.The sources disagree and carry a marker saying figures may be under correction immediately after the close, so this edition does not call either one today’s closing price. The change against the previous close of 6,808.21 also depends on which figure is used.The settled figures arrive in the evening and will be written as a single value in the final edition.

Key points
01The close remains two figures — KOSPI 6,879.87 and 6,912.37, KOSDAQ 834.39 and 837.65. The marker saying the figures may still be under correction is in place, so this edition does not narrow them to one.
02Large caps rose further after hours — in the 17:25 Nextrade snapshot, SK hynix stood at +3.38%, Samsung Electronics +2.1%, Samsung Electro-Mechanics +4.51% and Samsung SDI +9.88%. Doosan Enerbility was lower at -0.23%.
03By count, however, more names fell than rose — in the same snapshot, of 606 names covered, 280 rose, 311 fell and 15 were unchanged. The handful carrying the turnover and the rest of the list were looking in different directions.
04Flows are still provisional — on KOSPI, retail sold a net -KRW 1,912.0bn while foreign investors bought +KRW 135.4bn, institutions +KRW 181.4bn and investment firms +KRW 284.9bn; pension funds were -KRW 142.9bn. These shifted slightly from the closing edition and are settled in the evening.
02 · Nextrade (NXT)An alternative trading system opened in 2025 alongside the Korea Exchange, running pre-market and after-market sessions around regular hours.It shows the temperature of flow after the main session closes, but it is not a main session figure, so values from the two venues must not be mixed for the same name.NXT intraday — 20-minute delayed snapshotA reading that reflects the state twenty minutes earlier rather than the present, which only makes sense when the reference time is stated alongside it.Reading a delayed figure as a current one turns a move that has already happened into something that appears to be happening now. · as of 17:25 KST

Evening disclosures —Short sellingSelling borrowed shares first, betting the price will fall.A rising balance means more money is betting on a decline.balance

A window on whether the regular session’s move carried into the evening alternative venue

On Nextrade after hours, SK hynix at KRW 4,267.1 bn and Samsung Electronics at KRW 3,129.6 bn led turnover

The Nextrade snapshot is a 20-minute delayed reading as of 2026-08-27 17:25. It is not a settled figure for the day, and it is not a Korea Exchange main-session number.Of the 606 names covered, 280 rose, 311 fell and 15 were unchanged, with total turnover of KRW 14,835.9 bn.The largest turnover was SK hynix (+3.38%, KRW 4,267.1 bn), followed by Samsung Electronics (+2.1%, KRW 3,129.6 bn), Samsung Electro-Mechanics (+4.51%, KRW 688.1 bn) and Samsung SDI (+9.88%, KRW 401.9 bn); only Doosan Enerbility (-0.23%, KRW 372.3 bn) was lower.No settled tally exists for today yet — the most recent settled day is 26 August, when Nextrade turnover totalled KRW 13,667.7 bn for a market share of 12.2%.

03 · Gap risksRisk → same condition in the past → outcome distribution

Tomorrow morninggap risks 4names

A window naming in advance what could shake tomorrow’s opening price

Large caps held their gains after hours, yet 311 names fell against 280 that rose

ADR

Warning score total: 3

signal 2 points

Short-interest surge

Warning score total: 3

signal 1 point

Selling acceleration

Warning score total: 3

signal 0 points

Sentiment 90+

Warning score total: 3

signal 0 points

05 · Principleas of 18:24 KST on 2026-08-27

Evening Trading Principles

A window recording the trading principles to hold to on the evening of a crash day

Crash-precursor scoreA score that sums four items — depositary receipt declines, short-selling surges, selling acceleration and sentiment overheating — to gauge a risk regime.Each item’s data arrives on its own schedule, so the date behind each lit signal must be read alongside the score to avoid mistaking it for today’s risk. of 3 — but two of its signals rest on figures that are not from today

Today’s crash-precursor score is 3, in the alert grade. Two items account for it — the American depositary receipt item at 2 and the short-selling surge item at 1, while the selling-acceleration and sentiment items are at 0.The dates behind them matter — the depositary receipt item draws on -16.7% from the US session of 28 July, and the short-selling item uses a balance date of 21 August. Neither signal was lit by today’s data.The sentiment gauge reads 0.297, within the neutral band. That the score is elevated and that the score was built from today’s data are two different statements, and only the first can be made here.No trade is recommended — this page records only what was there.

Sources: Korea Exchange · NXT · own measurements · regular session confirmed 15:30 KST · The Silmari editorial desk.
This edition organises and explains publicly available market data. It is not investment advice. Predictions and their scores are preserved without revision — the judgement is yours.