90 Korean listings did not trade once in 27 sessions
Between 2026-08-27 and 2026-10-07, 90 of 2,863 listings on Korea's three boards recorded no trades at all — not in one session, in any of them. Between them they carry KRW 7.14tn of market capitalisation. 86 of the 90 never changed price either.
Read this first: we cannot tell you why
A session with no trades can mean a formal suspension, or simply that no buy and sell order matched all day. The open-data price feed carries no suspension flag, so we cannot distinguish the two, and this page does not try. Nothing here says a company is in trouble, and nothing here is a view on any security. It is a count of sessions with no trades, and what the published market-capitalisation figure is made of when that happens.
By board
| Board | Listings | No trades at all | Share |
|---|---|---|---|
| KOSPI | 942 | 19 | 2.0% |
| KOSDAQ | 1,823 | 57 | 3.1% |
| KONEX | 107 | 14 | 13.1% |
A listing is counted only if it appeared in at least 20 of the 27 daily files, so newly listed and newly delisted names are excluded rather than counted as silent.
On the window itself: we hold 27 daily files between 2026-08-27 and 2026-10-07. 3 weekdays in that range have no file (2026-09-24, 2026-09-25, 2026-10-05) — Korean market holidays, as far as we can tell. We say "27 sessions" rather than "27 consecutive sessions" on purpose: the feed can return an empty day for a weekday without saying why — it did so for 2026-10-08, two days running, with a normal response code — so we cannot promise that a weekday without a file was a holiday rather than a gap.
A market value that tripled on a day with no trades
This is the part that matters if you are building anything on this data. SAMBU CONSTRUCTION CO.,LTD (001470, KOSPI) did not trade a single share in any session of this window. On 2026-09-01 its share count fell from 229,681,824 to 39,139,903 and its closing price went from 347 to 5,820 — a capital reduction or consolidation. Its published market capitalisation went from KRW 79700mn to KRW 2,27800mn, about 2.9× — KRW 1,48100mn more, on a day nothing changed hands.
The feed records that day's change as 0 and the day-on-day move as 0. If your pipeline reads the change field, that day does not exist. If it reads the close, you get an unexplained jump. Both are wrong in different directions, and neither is the feed lying — the reference price genuinely changed without a trade, and the change field only describes trades.
All 4 such days in this window:
| Date | Company | Close | Shares | Market cap | Change field |
|---|---|---|---|---|---|
| 2026-09-01 | SAMBU CONSTRUCTION CO.,LTD (001470) | 347 → 5,820 | 229,681,824 → 39,139,903 | KRW 79700mn → KRW 2,27800mn | 0 |
| 2026-08-28 | UNION KOREA PHARM CO.,Ltd (080720) | 2,725 → 2,410 | 7,912,828 → 19,851,253 | KRW 21600mn → KRW 47800mn | 0 |
| 2026-09-21 | MiraeN Edupartner Co., Ltd. (208890) | 903 → 900 | 4,005,520 → 4,005,520 | KRW 3600mn → KRW 3600mn | -0.33 |
| 2026-09-01 | SI RESOURCES CO.,LTD. (065420) | 94 → 940 | 77,482,810 → 7,748,281 | KRW 7300mn → KRW 7300mn | 0 |
The largest by market capitalisation
Ranked by the market-capitalisation figure the feed publishes for them — which, as above, is listed shares times a price that has not moved. Their presence here says nothing about them beyond the absence of trades in this window.
| Company | Code | Board | Close | Market cap | Distinct closes |
|---|---|---|---|---|---|
| BONSYSTEMS Co., Ltd. | 496320 | KONEX | 1,023,000 | KRW 10,39300mn | 1 |
| KUMYANG CO.,LTD | 001570 | KOSPI | 9,900 | KRW 6,33300mn | 1 |
| IT-CHEM Co., Ltd. | 309710 | KOSDAQ | 21,000 | KRW 2,68400mn | 1 |
| NKGen Biotech Korea Co., Ltd. | 182400 | KOSDAQ | 3,670 | KRW 2,65500mn | 1 |
| Vidente Co., Ltd. | 121800 | KOSDAQ | 3,320 | KRW 2,56300mn | 1 |
| Q AID CO., LTD. | 377460 | KOSDAQ | 4,080 | KRW 2,53200mn | 1 |
| JR GLOBAL REIT | 348950 | KOSPI | 1,182 | KRW 2,33300mn | 1 |
| SAMBU CONSTRUCTION CO.,LTD | 001470 | KOSPI | 5,820 | KRW 2,27800mn | 2 |
| OptiCore Inc. | 380540 | KOSDAQ | 8,450 | KRW 2,06700mn | 1 |
| UNION KOREA PHARM CO.,Ltd | 080720 | KOSDAQ | 2,410 | KRW 1,92400mn | 2 |
"Distinct closes" is how many different closing prices the listing had across all 27 sessions. A 1 means the published price never moved once.
What this page does not tell you
- Whether any of these is suspended. That field is not in the feed. It is the single most useful thing to know here and we do not have it — saying so beats guessing.
- Why each company has no trades. Suspension, a controlling holder owning nearly everything, a board where thin trading is normal — all produce the same zero.
- Anything forward-looking. No view on any company, no suggestion that silence here means anything about the business behind it.
- History beyond this window. 27 sessions, 2026-08-27 to 2026-10-07. We hold what we have collected, and a longer series is a possible follow-up, not a claim we can make today.
Source: the Korean government open-data stock price service (dataset 15094808, Financial Services Commission), licence marked as carrying no usage restriction. Counts are computed at build time from the daily files we collect; they are not transcribed. See the KRX field map for what each field in that feed means.