--- title: "JGB repo market in Japan" aliases: - "money-market/jgb-repo-market-japan" - "jgb-repo-market-japan" - "Japan JGB repo market" - "日本国債レポ市場" - "JapanFG/japanese-government-bonds" domain: "money-market" created: 2026-05-20 last_updated: 2026-05-20 last_tended: 2026-05-20 review_by: 2026-11-15 confidence: likely tags: [money-market, repo, JGB, securities-financing, BoJ] status: active sources: - "https://www.boj.or.jp/en/statistics/outline/exp/exrepo.htm" - "https://www.boj.or.jp/en/statistics/bis/repo/index.htm" - "https://www.boj.or.jp/en/research/wps_rev/rev_2025/rev25e03.htm" - "https://www.boj.or.jp/en/mopo/measures/mkt_ope/ope_b/index.htm" --- # JGB repo market in Japan ## Wiki route This entry sits under [[money-market/INDEX|money-market index]]. Read it against [[money-market/boj-open-market-operations|BoJ open market operations]] for peer / contrast context and [[money-market/japan-money-market|Japan money market]] for the broader system / regulatory boundary. ## TL;DR The JGB repo market is Japan's secured short-term funding and collateral-financing layer. It is distinct from the uncollateralized call market: repo transactions exchange securities for cash with a commitment to repurchase the same or similar collateral later, while call transactions are short-term unsecured lending / borrowing. For FinWiki, the repo market matters because it links BoJ policy implementation, JGB market liquidity, dealer balance sheets, securities lending, and short-rate transmission. It is also one of the best places to observe whether JGB-market functioning is improving or stressed. ## Market Mechanics | Element | Explanation | |---|---| | Repo transaction | Securities or other financial assets are provided in exchange for cash, with a commitment to repurchase the same or similar collateral at a fixed price on a future date. | | JGB repo | Repo where the securities / collateral are Japanese government securities and the cash leg is often yen. | | Cash borrowing side | Securities provider / repo side; receives cash against collateral. | | Cash lending side | Securities recipient / reverse repo side; provides cash and receives collateral. | | Securities lending with cash collateral | Economically adjacent to repo and included in BoJ securities-financing statistics. | | Repo rate | BoJ statistics calculate volume-weighted repo rates using repo transactions and cash-collateralized securities lending after adjusting for lending fees or rebate rates. | ## GC vs SC | Type | Meaning | Typical use | |---|---|---| | GC repo | General collateral: securities are not specified. | Primarily funding and cash management. | | SC repo | Special collateral: securities are specified. | Borrowing a specific JGB issue or financing a particular collateral need. | This distinction is important when reading stress. A broad funding problem may show in GC conditions, while scarcity in a specific JGB issue can show through SC demand, specialness, or securities-lending facility usage. ## Data Surface BoJ's securities financing statistics cover repo transactions and securities lending transactions collected by the FSA and BoJ under the FSB data-collection framework. The published datasets include: - daily flow data for new transactions; - monthly stock data by counterparty and currency; - yen transactions with Japanese government securities; - securities lending transactions involving JGBs and yen; - repo-rate series. The scope is useful but not complete. Reporting focuses on major Japan-located financial institutions and excludes some internal, individual, central-bank, and advice-only transactions. ## BoJ and Market Functioning BoJ's Securities Lending Facility provides a temporary and secondary source of JGBs to market participants to support liquidity and smooth market functioning. A 2025 BoJ Review linked the earlier surge and later decline in SLF borrowing to changes in JGB market liquidity, cash / futures / repo market functioning, BoJ purchase reductions, repo-rate stabilization, and investor positioning. For analysis, SLF usage should be read as a market-functioning signal, not as a standalone policy target. ## JapanFG Relevance - [[financial-regulators/boj-monetary-policy|BoJ monetary policy]] affects repo through market operations, JGB holdings, and short-rate expectations. - [[financial-regulators/tokyo-tanshi]], [[financial-regulators/central-tanshi]], and [[financial-regulators/ueda-yagi-tanshi]] connect the repo layer to the broader short-term money-market infrastructure. - Megabanks such as [[megabanks/mufg]], [[megabanks/smfg]], and [[megabanks/mizuho-fg]] are exposed through JGB holdings, collateral management, reserve balances, and wholesale funding. - Securities firms such as [[securities-firms/mizuho-securities]], [[securities-firms/mufg-mums]], and [[securities-firms/nomura-hd]] are exposed through dealer inventory, market-making, and collateral finance. ## Reading Rules - Do not treat repo rates as the same instrument as the uncollateralized overnight call rate. - Separate funding demand from specific-security scarcity. - Check whether the issue is GC funding, SC specialness, securities lending, BoJ SLF usage, or broader JGB cash-market liquidity. - When using current data, cite the exact BoJ monthly release because the numbers are time-specific and may be corrected later. ## Related - [[money-market/INDEX|money-market INDEX]] - [[money-market/japan-money-market]] - [[money-market/call-market-structure]] - [[money-market/boj-open-market-operations]] - [[financial-regulators/boj-monetary-policy]] - [[financial-regulators/local-bond-market]] - [[financial-regulators/tokyo-tanshi]] - [[financial-regulators/central-tanshi]] - [[financial-regulators/ueda-yagi-tanshi]] - [[INDEX|FinWiki index]] ## Sources - Bank of Japan: explanation of Statistics on Securities Financing Transactions in Japan. - Bank of Japan: Statistics on Securities Financing Transactions in Japan release surface. - Bank of Japan Review 2025-E-3: JGB market functioning and Securities Lending Facility usage. - Bank of Japan: Securities Lending Facility.