bonds / 40Y / JGB (40-Year) No. 1
Bond Information
| Name | JGB (40-Year) No. 1 |
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| ISIN | — |
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| Issue # | 1 |
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| Coupon (%) | 2.4% semi-annual |
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| Issue Date | 2007-11-20 |
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| Maturity | 2048-03-20 （Remaining 21.5y） |
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| Outstanding | ¥1.1T （2026-03-31・MOF） |
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| Total issued | ¥1.1T （annual report, FY-end） |
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| Statutory basis | 4条借換前倒 |
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| STRIPS principal | ¥29.9B （2026-06-30） |
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| SLF usage | last 30d —／ total ¥28B（last 2026-05-13・BOJ） |
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| BOJ Holding | ¥444.7B（39.4%）（as of 2026-08-31・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 | 2.400 % |
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| Compound Yield | 2.3980 % |
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| Accrued Interest | 1.163836 (177 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 16.55 |
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| Macaulay Duration | 16.75 |
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| DV01 | — |
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| Convexity | 330.3 |
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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 | 1.200 |
| 2027-03-20 | coupon | 1.200 |
| 2027-09-20 | coupon | 1.200 |
| …（39 omitted）… |
| 2047-09-20 | coupon | 1.200 |
| 2048-03-20 | coupon + redemption | 101.200 |
Related Auctions
Horizon total return settle 2026-09-13 ・ CMT 2026-09-10
| CMT interpolated (rem 21.5y) | 3.833 % → ref. price 79.086 |
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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 2026-12-13 | -50bp | 3.320 | 86.010 | -0.612 | +7.87% | +31.47% |
| -25bp | 3.570 | 82.632 | -0.612 | +3.66% | +14.63% |
| Unchanged (roll-down) | 3.820 | 79.414 | -0.612 | -0.35% | -1.41% |
| +25bp | 4.070 | 76.348 | -0.612 | -4.17% | -16.69% |
| +50bp | 4.320 | 73.426 | -0.612 | -7.81% | -31.26% |
| 6m 2027-03-13 | -50bp | 3.307 | 86.302 | 1.180 | +10.46% | +20.93% |
| -25bp | 3.557 | 82.939 | 1.180 | +6.27% | +12.54% |
| Unchanged (roll-down) | 3.807 | 79.733 | 1.180 | +2.28% | +4.56% |
| +25bp | 4.057 | 76.678 | 1.180 | -1.53% | -3.06% |
| +50bp | 4.307 | 73.765 | 1.180 | -5.16% | -10.32% |
| 12m 2027-09-13 | -50bp | 3.281 | 86.881 | 2.400 | +12.70% | +12.70% |
| -25bp | 3.531 | 83.549 | 2.400 | +8.55% | +8.55% |
| Unchanged (roll-down) | 3.781 | 80.371 | 2.400 | +4.59% | +4.59% |
| +25bp | 4.031 | 77.339 | 2.400 | +0.81% | +0.81% |
| +50bp | 4.281 | 74.445 | 2.400 | -2.79% | -2.79% |