SeoulMarkets · data for licence
Korean companies’ business segments: half report only one
737 listed companies · 2025 annual reports · by market cap
Every listed company decides how many pieces to show you. Some report one number for the whole firm; others break out five, eight, twelve divisions with revenue against each. Half of Korea's listed market reports itself as a single segment — but among the largest companies, only 23% do. That gap is what this dataset measures.
- What it is — for each listed company, whether it reports business segments at all, how many distinct divisions its filing names, and what they are called.
- Why trust it — every figure comes from the company's own annual report as filed with the regulator, not from a vendor's reconstruction.
- How big — 737 companies for 2025, of which 365 (50%) report a single segment.
- The honest caveat — we do not yet extract the figures inside each segment table. Layouts differ company by company; where we could not parse one we say so rather than writing a zero.
- The form — one file: company · ticker · market · segment count · segment names · filing reference. Plus the summary below.
① Bigger companies show you more
The pattern is monotonic. Among companies above $10bn, the typical filing names 8 distinct divisions. Below $300m, the typical filing names 1 — that is, no breakdown at all. The smaller the company, the less you can see inside it.
| Market cap | Cos. | Single segment | Median names |
|---|---|---|---|
| Mega ($10bn+) | 53 | 23% | 8 |
| Large ($1–10bn) | 193 | 48% | 2 |
| Mid ($300m–1bn) | 259 | 53% | 1 |
| Small (under $300m) | 232 | 53% | 1 |
Two things to read carefully. "Single segment" counts two cases together: companies that say outright they have one reportable segment, and companies whose report never divides the business. Both mean the same thing to a reader — there is no breakdown. "Names" counts distinct division names appearing in the filing, not audited reportable segments under IFRS 8. A holding company names its subsidiaries' divisions too, so this is an upper bound on reportable segments, and we call it what it is.
② Which filings name the most divisions
These filings name six or more distinct divisions. Read this as a measure of how much structure the document exposes, not as a segment count — the top of this list is dominated by holding companies, which describe every subsidiary's divisions as well as their own. That is itself the finding: a holding company's filing is where the structure is visible.
| Company | Ticker | Division names |
|---|---|---|
| SHINHAN FINANCIAL GROUP CO.,LTD | 055550 | 40+ |
| HANWHA CORP | 000880 | 40+ |
| KOLON CORPORATION | 002020 | 40+ |
| DAISHIN SECURITIES CO.,LTD | 003540 | 39 |
| KB Financial Group Inc. | 105560 | 38 |
| SK Inc. | 034730 | 37 |
| LS Corp. | 006260 | 37 |
| HD HYUNDAI CO.,LTD. | 267250 | 35 |
| CJ Corp. | 001040 | 35 |
| GS Retail Co.,Ltd | 007070 | 32 |
| HANWHA AEROSPACE CO., LTD. | 012450 | 31 |
| MIRAE ASSET SECURITIES CO.,LTD. | 006800 | 28 |
③ What we could not measure
We publish the gaps rather than filling them. Of 784 companies attempted for 2025:
| Filing not retrieved | 29 companies — no annual report for that year at the regulator, or the document would not download. |
|---|---|
| Segments present, names not parsed | 18 companies — the report divides the business but our parser could not name the divisions. Counted as unmeasured, never as zero. |
| Audited segment boundaries | We count division names as written, not IFRS 8 reportable segments as audited. Where a filing names more divisions than it reports, our count is high — an upper bound, not a match. |
| Segment figures | Not extracted yet. Segment tables are laid out differently by every filer; we would rather publish no number than a wrong one. |
④ What you get
| Files | One CSV — company · ticker · market · sector · reports segments (y/n) · single-segment flag · distinct division names · the names themselves · filing reference. Plus the by-size summary above. |
|---|---|
| Coverage | 737 listed companies, largest first by market capitalisation. Expanding down the market. |
| Refresh | Annually, on the reporting cycle. Annual reports land in March. |
| Source | DART annual reports (Financial Supervisory Service electronic disclosure system); market capitalisation from KRX daily quotations. We store the filed facts, not the reports themselves. |
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From regulator-filed annual reports · Segment figures not yet extracted · Not investment advice. Browse all SeoulMarkets datasets. See our terms of use and refund policy.