How many bond boards does Korea have?

Three. The government inter-dealer board carried 10 listings on 2026-09-09, the general board 271, and the small-lot board 40. Almost every published Korean bond yield comes from the first one.

What is a small-lot bond in Korea?

A near-fixed universe of about 40 listings, mostly housing-bond series, quoted in small denominations. It is the board a Korean household actually buys from, and its median yield on 2026-09-09 was 4.477%.

What is the spread between Korean government and corporate bonds?

Over 22 sessions the general board's median ran 0.412 to 0.950 percentage points above the government board. A single quoted spread is a number picked from a range twice its own width.

Which Korean issuers pay the highest bond yields?

On 2026-09-09 financial-sector paper had the highest median at 5.049%, against 4.043% for the lowest group.

SeoulMarkets · rates

Korea lists bonds on three boards

Latest session 2026-09-09 · 22 sessions in window · updated each trading day

Almost every published Korean bond yield comes from the government inter-dealer board, which carried 10 listings on the latest session. Beside it sit the general board and a near-fixed 40-listing small-lot board that Korean households actually buy from — and nobody counts it in English. This is the compass, free. The full daily history and API are what we licence.

Board	Listings	Median yield	Over government
Government (inter-dealer)	10	3.878%	—
Small-lot	40	4.477%	0.599pp
General	271	4.645%	0.767pp

The gap is not a constant

Board over government	Narrowest	Widest	Latest
General	0.412pp	0.950pp	0.767pp
Small-lot	0.426pp	0.774pp	0.599pp

The government board is not a fixed reference either — its own median ran 3.630% to 4.011% inside the same window, so the premium widens and narrows for reasons on both sides of it.

Sorted by who issued the paper

The board a bond trades on is a different question from who owes the money. Issuer type is read out of the listing name, and names that do not announce it stay unclassified rather than being folded into a tidier bucket.

Issuer type	Listings	Median yield
Financial	100	5.049%
Unclassified	96	4.731%
Local government	32	4.468%
Public corporation	33	4.406%
Treasury	40	4.386%
Housing bonds	20	4.043%

How this is counted, and what is left out

Every figure is a median, never a mean. One general-board listing settled at 117.082% on 9 September; a mean would have carried it into the headline.
Yields outside 0.1-20% are counted and reported, not deleted — 11 rows of 321 on 2026-09-09. They are what the source published, and a record that quietly drops them is not a record.
Opening, high and low yield fields are not used anywhere on this page. 22 of 3,547 rows carried a negative high yield, and the widest intraday range those fields imply is 23,602 percentage points, which is not a market move.
Residual maturity and classification arrive filled on 2.8% of rows, so no maturity bucket appears here. Maturity is recoverable from listing names and is used on our yield-curve work instead.
A board with fewer than three listings on a day is shown as unmeasured, not given a median.
This series had a hole. Collection stopped after 24 August and went unnoticed for 18 days because the dataset sat outside our missing-day check. The 12 absent sessions were refetched from source on 11 September and the check now covers it.

Source: Financial Services Commission (Republic of Korea), Bond Securities Information Service. Medians computed by SeoulMarkets. This is not investment advice.