Korea Index Tape
168 KRX-family indices as of 2026-09-10, in English and free. This page is about coverage — what we hold, what each column actually measures, and where the source left a gap instead of a number.
Four families, not one number
Indices come from four families, and how many carry a disclosed base date differs a lot between them — worth knowing before you compute a since-inception return.
| Family | Indices | Constituent slots (sum) | With base date |
|---|---|---|---|
| KOSPI Series | 50 | 5,134 | 60.0% |
| KOSDAQ Series | 39 | 8,355 | 53.8% |
| KRX Series | 40 | 6,232 | 87.5% |
| Theme Index | 39 | 1,521 | 100.0% |
“Constituent slots” is a sum across indices, not a count of distinct companies — one company sits inside many indices at once (a KOSPI stock is typically in a sector index, a size index and the headline index together), so this number is not a market census. Company by company, that is the KOSPI weights page.
Seven indices are computed, not counted
A zero constituent count is not always a gap. 7 of 168 indices are built from a formula rather than a basket of listed stocks — the four K-Sharpe indices (risk-adjusted return over 1, 3, 5 and 10 years) and three named blends. A basket index with zero constituents would be a defect; a computed index with zero is simply the wrong question. We tag which is which rather than let one zero mean two different things.
- K-Sharpe Index (10-Year) — KRX Series
- K-Sharpe Index (1-Year) — KRX Series
- K-Sharpe Index (3-Year) — KRX Series
- K-Sharpe Index (5-Year) — KRX Series
- KRX Samsung Electronics-SK hynix-US Treasury Mixed Index — Theme Index
- KRX/S&P ESG High Dividend Index — Theme Index
- KRX/S&P Carbon Efficient Green New Deal Index — Theme Index
The year-low column, and why most of it is empty
6 of 168 indices carry a usable annual-low figure on this snapshot. In the other 162, the source recorded an annual low of exactly zero paired with a low-date one day after the snapshot date itself — an impossible value for something that already happened, and a sign the field is a placeholder rather than a real observation. We record those as not measured. A zero we cannot verify is worse than a blank we can explain.
Related
Company-level share of the market, not the index level: what share of KOSPI is each company. The financial-statement and valuation tapes these ratios would sit beside: financials coverage, the valuation tape. See what else is in the catalogue.
Questions
How many Korean indices are covered, and in what language?
168 indices from the KOSPI, KOSDAQ, KRX and thematic-index families, as of 2026-09-10. 100.0% carry an English name for both the index and its family — every one of them, because the family and index name are the two labels a foreign reader needs before anything else.
What does "constituent count" mean, and is it the same as index weight?
It is how many stocks make up that index on this date — not each stock’s weight inside it. We do not carry the free-float-adjusted weighting KRX uses internally, so this page never uses the word "weight." Company-level share of total market value is a separate page: see what share of KOSPI is each company, below.
Why do seven indices show zero constituents?
Those are computed indices — K-Sharpe Index (10-Year), K-Sharpe Index (1-Year), K-Sharpe Index (3-Year), K-Sharpe Index (5-Year), KRX Samsung Electronics-SK hynix-US Treasury Mixed Index, KRX/S&P ESG High Dividend Index, KRX/S&P Carbon Efficient Green New Deal Index — built from a formula (a risk-adjusted return calculation, or a blend of a handful of named instruments) rather than from a basket of listed constituents. A zero there is not a gap; it is the correct shape for that kind of index, and we label it rather than mixing it into the basket-index count.
Why is the year-low column mostly empty?
Of 168 rows, only 6 carry a usable annual-low figure. In the rest, the source paired an annual low of exactly zero with a date one day after the snapshot itself — a placeholder the source had not filled in yet, not a real low of zero. We record it as not measured rather than publish a number we know is wrong.
Does every index have a base date?
125 of 168 do. A base date and base index value let you compute an index’s return since its own inception rather than only since whatever date our snapshot happens to start. Where a base is not disclosed, the column is empty rather than guessed.
Sources, and what this cannot tell you
Index levels and composition: the Korean public-data portal and KRX index disclosures. Snapshot date 2026-09-10; daily snapshots have been kept since late August 2026. Built 12 September 2026, 21:39 KST.
This is one day’s snapshot, not a time series page — the underlying daily files go back further and feed the API. It carries level, change and composition, not the free-float weighting scheme KRX uses to run the index itself. This is not investment advice.