bonds / 40Y / JGB (40-Year) No. 8
Bond Information
| Name | JGB (40-Year) No. 8 |
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| ISIN | — |
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| Issue # | 8 |
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| Coupon (%) | 1.4% semi-annual |
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| Issue Date | 2015-04-27 |
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| Maturity | 2055-03-20 （Remaining 28.4y） |
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| Outstanding | ¥2.5T （2026-03-31・MOF） |
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| Total issued | ¥2.4T （annual report, FY-end） |
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| Statutory basis | 4条借換前倒財投 |
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| STRIPS principal | ¥10.1B （2026-09-30） |
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| SLF usage | last 30d ¥1.5B／ total ¥174.8B（last 2026-10-06・BOJ） |
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| BOJ Holding | ¥1.3T（53.2%）（as of 2026-10-20・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 | 1.400 % |
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| Compound Yield | 1.3992 % |
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| Accrued Interest | 0.145753 (38 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 23.34 |
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| Macaulay Duration | 23.51 |
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| DV01 | — |
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| Convexity | 626.8 |
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Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
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| 2027-03-20 | coupon | 0.700 |
| 2027-09-20 | coupon | 0.700 |
| 2028-03-20 | coupon | 0.700 |
| …（52 omitted）… |
| 2054-09-20 | coupon | 0.700 |
| 2055-03-20 | coupon + redemption | 100.700 |
Related Auctions
Horizon total return settle 2026-10-28 ・ CMT 2026-10-23
| CMT interpolated (rem 28.4y) | 3.915 % → ref. price 57.093 |
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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 2027-01-28 | -50bp | 3.417 | 63.692 | 0.353 | +12.15% | +48.58% |
| -25bp | 3.667 | 60.384 | 0.353 | +6.37% | +25.46% |
| Unchanged (roll-down) | 3.917 | 57.281 | 0.353 | +0.95% | +3.78% |
| +25bp | 4.167 | 54.372 | 0.353 | -4.14% | -16.55% |
| +50bp | 4.417 | 51.641 | 0.353 | -8.91% | -35.63% |
| 6m 2027-04-28 | -50bp | 3.419 | 63.854 | 0.704 | +13.04% | +26.08% |
| -25bp | 3.669 | 60.556 | 0.704 | +7.28% | +14.56% |
| Unchanged (roll-down) | 3.919 | 57.462 | 0.704 | +1.87% | +3.75% |
| +25bp | 4.169 | 54.559 | 0.704 | -3.20% | -6.40% |
| +50bp | 4.419 | 51.834 | 0.704 | -7.96% | -15.92% |
| 12m 2027-10-28 | -50bp | 3.422 | 64.205 | 1.400 | +14.87% | +14.87% |
| -25bp | 3.672 | 60.929 | 1.400 | +9.15% | +9.15% |
| Unchanged (roll-down) | 3.922 | 57.853 | 1.400 | +3.77% | +3.77% |
| +25bp | 4.172 | 54.964 | 1.400 | -1.27% | -1.27% |
| +50bp | 4.422 | 52.249 | 1.400 | -6.02% | -6.02% |