The part of the curve the Bank of Japan bought least of, so it is the closest thing Japan has to a freely traded long rate. Domestic life insurers set it, and when they step back it moves further and faster than the ten-year does.
30 days to 4 Oct 2026 · 3.956% to 4.126%
This page shows the last 30 days. 30-year JGB yield has 6,553 readings in the warehouse, back to 4 Jan 2000. A plan opens the rest of it, with CSV export and the analyst.
Source: Ministry of Finance Japan, "International Transactions in Securities" (https://www.mof.go.jp/english/policy/international_policy/reference/itn_transactions_in_securities/index.htm), used under the Public Data License (Version 1.0).
Thirty-year JGB constant maturity yield, per cent, Japanese business days, from 2 September 1999. The part of the curve the Bank of Japan bought least of, so it moves on domestic life insurance demand rather than on policy.
Informational research only. Nothing here is personalised investment advice.