KOSDAQ fell 3.26% on Monday. All 1,824 KOSDAQ listings together are worth less than half of SK hynix
KOSDAQ closed at 727.21, a three-month low. On Friday its 1,824 listings were worth 425.8 trillion won; SK hynix alone was 932.8 trillion. KOSDAQ's share of trading fell from 35.6% to 25.1% in October.
AI-assisted, human-reviewed sourcing. Figures are pulled programmatically from the official sources listed at the end of this article and checked by an editor before publication.
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KOSDAQ fell 3.26% on Monday, 26 October, to 727.21, its lowest close since 31 July, according to Newspim. KOSPI fell 1.46% the same day. Institutions sold a net 131.8 billion won of KOSDAQ shares; individuals and foreigners were small net buyers.
For most of October, the order had been the other way: KOSDAQ held up better. Here is what our daily KRX files show up to Friday.
The whole market versus one company
On Friday, 23 October, the 1,824 KOSDAQ listings were worth 425.8 trillion won together. SK hynix, one KOSPI company, was worth 932.8 trillion: 2.19 times the entire KOSDAQ (SK hynix’s place in the KOSPI).
KOSDAQ’s ten biggest names are 17.5% of its value. The largest, Alteogen, was 15.6 trillion won, less than SK hynix’s daily swing on some October days.
October: held value, lost trading
| 30 Sep | High in October | 23 Oct | |
|---|---|---|---|
| KOSDAQ market value (trillion won) | 481.9 | 518.3 (6 Oct) | 425.8 |
| KOSDAQ share of KOSPI + KOSDAQ value | 7.87% | 8.79% (20 Oct) | 8.50% |
| KOSDAQ share of combined trading | 27.5% | 35.6% (2 Oct) | 25.1% |
From 30 September to 23 October, KOSDAQ’s market value fell 11.6% and KOSPI’s 18.7%. KOSDAQ’s slice of the combined market grew.
Trading went the other way. In the first days of October, more than a third of all won traded on the two boards went through KOSDAQ. By mid-October the share had dropped to 19.7% (15 October). That was the day SK hynix fell 11.06% and Samsung Electronics 9.48%, and KOSPI trading reached 28.64 trillion won, its October high in our files. It was 25.1% on Friday.
Breadth was weak even before Monday. On 23 October, 1,248 KOSDAQ listings fell and 404 rose.
What Monday changed
A 3.26% fall in KOSDAQ against 1.46% in KOSPI narrows the gap that built up through October. We will have Monday’s stock-by-stock file in our next update; until then, the Monday figures above are the wire services’, not ours.
Statistics, not advice. Market value is what investors pay for expected future earnings, not a measure of what a company produces.
Related: The 28 companies reporting this week are 62.8% of KOSPI · KOSPI market-value share by company · KOSPI up 31%, KOSDAQ down 17% this year. More from the same data: KOSDAQ trades above its weight · Samsung’s preferred-common gap, narrowest in our data.
Data & Verification Notes
- Data as of
- Sources
- Korea Exchange (KRX OPEN API) — KOSPI and KOSDAQ daily stock trading, 30 September to 23 October 2026, collected by SeoulMarkets: market capitalisation, trading value and daily change for every listing (1,824 KOSDAQ and 940 KOSPI listings on 23 October).
- Newspim and Seoul Shinmun, 26 October 2026 — KOSDAQ close of 727.21 (−24.48, −3.26%), lowest since 31 July (719.76); KOSDAQ net selling by institutions of 131.8 billion won, net buying by individuals of 90.3 billion and foreigners of 33.1 billion (Newspim); HLB −5.65%, Alteogen −2.67%.
- Cross-checks
- 23 Oct market value: all KOSDAQ listings 425.8 trillion won; SK hynix 932.8 trillion (2.19 times); KOSPI 4,582.2 trillion.
- KOSDAQ market value: 481.9 trillion (30 Sep), 518.3 trillion (6 Oct, October high), 425.8 trillion (23 Oct). −11.6% from 30 Sep; KOSPI −18.7% over the same days.
- KOSDAQ share of combined KOSPI + KOSDAQ market value: 7.87% (30 Sep), 8.79% (20 Oct, high), 8.50% (23 Oct).
- KOSDAQ share of combined trading value: 35.6% (2 Oct), 19.7% (15 Oct, low), 25.1% (23 Oct).
- KOSDAQ's ten largest listings are 17.5% of KOSDAQ market value; the largest, Alteogen, was 15.6 trillion won.
- 23 Oct KOSDAQ: 404 rose, 1,248 fell.
- Excluded figures
- Monday 26 October stock-by-stock data. Monday's KOSDAQ figures are from wire reports, not our count.
- Nextrade trading. Trading values are Korea Exchange figures only.
- Why KOSDAQ fell. Reports cited institutional selling and global uncertainty; we have not measured the cause.
- This is not investment advice.
- Instruments
- 000660, 196170, 086520, 247540, 028300
The full dataset behind these figures — every listed company, every row — is available to license. SeoulMarkets data for licence →
Not investment advice. SMarkets publishes data journalism for general information only. Nothing here is investment advice, a recommendation, or an offer to buy or sell any security — any investment you make is at your own risk and responsibility. Figures are derived from official public data sources and may be revised by the issuing agency. Verify independently before acting.
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