BoJ open market operations
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This entry sits under money-market index. Read it against JGB repo market in Japan for peer / contrast context and Japan money market for the broader system / regulatory boundary.
TL;DR
Open market operations are the Bank of Japan’s main implementation tool for money-market control. Under the policy guideline decided at Monetary Policy Meetings, the BoJ supplies or absorbs funds by lending against collateral, buying or selling securities, conducting repo-style operations, and using other market-operation facilities.
For FinWiki, this page is the mechanics layer under boj-monetary-policy and japan-money-market.
Operation Types
The BoJ’s own explanation divides open market operations into two broad directions:
| Direction | Meaning | Typical examples |
|---|---|---|
| Funds-supplying operations | BoJ adds liquidity to financial markets. | Loans against pooled collateral, JGB purchases, Treasury Discount Bill purchases, JGS purchase operations with resale agreements. |
| Funds-absorbing operations | BoJ drains liquidity from financial markets. | Sales of BoJ bills, JGS sale operations with repurchase agreements. |
The exact operation menu changes with the policy regime. Always verify the current official BoJ operation page before using this page for trade-level or current-rate analysis.
Why Operations Matter
Market operations translate policy into balance-sheet reality:
- They affect current-account balances at the BoJ.
- They influence the uncollateralized overnight call rate and other short funding prices.
- They affect JGB market liquidity and dealer inventory conditions.
- They change collateral demand and the relative attractiveness of repo / call funding.
- They determine which institutions have operational contact with the BoJ as counterparties or account holders.
JapanFG Relevance
| Entity cluster | Operation linkage |
|---|---|
| Megabanks | Reserve balances, loan / deposit repricing, JGB portfolio valuation, liquidity placement. |
| Securities firms | JGB dealing, repo finance, collateral, and dealer-balance-sheet capacity. |
| Tanshi companies | Money-market brokerage, operation-counterparty adjacency, call-market rate formation. |
| Trust / custody banks | Settlement liquidity, collateral movement, fund cash management. |
Use these internal anchors:
- mufg, smfg, mizuho-fg
- mizuho-securities, mufg-mums
- tokyo-tanshi, central-tanshi, ueda-yagi-tanshi
- local-bond-market
Reading Checklist
When reading a BoJ operation result, capture:
- operation type;
- offer amount and accepted amount;
- rate / yield terms if disclosed;
- maturity / duration;
- eligible collateral or securities;
- whether the operation supplies or absorbs funds;
- relationship to the current MPM guideline.
Related
- money-market INDEX
- japan-money-market
- call-market-structure
- boj-monetary-policy
- local-bond-market
- INDEX
- FinWiki index
Sources
- Bank of Japan: What types of open market operations does the Bank conduct?
- Bank of Japan: What are market operations?
- Bank of Japan: Money Market.
- Bank of Japan: 2024年度の金融市場調節.