bonds / 40Y / JGB (40-Year) No. 18
Bond Information
| Name | JGB (40-Year) No. 18 |
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| ISIN | — |
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| Issue # | 18 |
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| Coupon (%) | 3.1% semi-annual |
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| Issue Date | 2025-05-29 |
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| Maturity | 2065-03-20 （Remaining 38.6y） |
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| Outstanding | ¥2.7T （2026-03-31・MOF） |
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| STRIPS principal | ¥300M （2026-06-30） |
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| SLF usage | last 30d —／ total ¥108.6B（last 2026-06-18・BOJ） |
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| BOJ Holding | ¥146.8B（5.4%）（as of 2026-08-10・Source: BOJ・Ratios approximate due to differing as-of dates） |
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| Status | active |
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Results
Yield Calculator (price input) | Simple Yield | 3.100 % |
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| Compound Yield | 3.0975 % |
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| Accrued Interest | 1.324932 (156 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 22.14 |
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| Macaulay Duration | 22.48 |
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| DV01 | — |
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| Convexity | 689.7 |
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Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
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| 2026-09-20 | coupon | 1.550 |
| 2027-03-20 | coupon | 1.550 |
| 2027-09-20 | coupon | 1.550 |
| …（73 omitted）… |
| 2064-09-20 | coupon | 1.550 |
| 2065-03-20 | coupon + redemption | 101.550 |
Related Auctions
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 38.6y) | 4.001 % → ref. price 82.310 |
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| G-spread (vs interpolated CMT) | — |
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| Horizon | Scenario | Yield@H | Price@H | Carry | Total return | Ann. |
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| 3m 2026-11-23 | -50bp | 3.501 | 91.534 | -0.781 | +10.09% | +40.38% |
| -25bp | 3.751 | 86.780 | -0.781 | +4.41% | +17.64% |
| Unchanged (roll-down) | 4.001 | 82.373 | -0.781 | -0.86% | -3.44% |
| +25bp | 4.251 | 78.284 | -0.781 | -5.75% | -23.00% |
| +50bp | 4.501 | 74.486 | -0.781 | -10.29% | -41.16% |
| 6m 2027-02-23 | -50bp | 3.501 | 91.565 | 1.550 | +12.92% | +25.84% |
| -25bp | 3.751 | 86.824 | 1.550 | +7.25% | +14.50% |
| Unchanged (roll-down) | 4.001 | 82.427 | 1.550 | +1.99% | +3.99% |
| +25bp | 4.251 | 78.345 | 1.550 | -2.89% | -5.78% |
| +50bp | 4.501 | 74.553 | 1.550 | -7.42% | -14.84% |
| 12m 2027-08-23 | -50bp | 3.500 | 91.611 | 3.100 | +14.83% | +14.83% |
| -25bp | 3.750 | 86.895 | 3.100 | +9.19% | +9.19% |
| Unchanged (roll-down) | 4.000 | 82.518 | 3.100 | +3.95% | +3.95% |
| +25bp | 4.250 | 78.452 | 3.100 | -0.91% | -0.91% |
| +50bp | 4.500 | 74.672 | 3.100 | -5.43% | -5.43% |