bonds / 20Y / JGB (20-Year) No. 123
Bond Information
| Name | JGB (20-Year) No. 123 |
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| ISIN | — |
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| Issue # | 123 |
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| Coupon (%) | 2.1% semi-annual |
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| Issue Date | 2010-12-20 |
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| Maturity | 2030-12-20 （Remaining 4.3y） |
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| Outstanding | ¥2.7T （2026-03-31・MOF） |
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| Total issued | ¥3T （annual report, FY-end） |
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| Statutory basis | 4条借換前倒財投 |
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| STRIPS principal | ¥400M （2026-06-30） |
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| SLF usage | last 30d —／ total ¥26B（last 2026-03-31・BOJ） |
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| BOJ Holding | ¥1.4T（49.9%）（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 | 2.100 % |
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| Compound Yield | 2.0976 % |
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| Accrued Interest | 0.489041 (85 days) per 100 |
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| Settlement Amount | — |
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| Modified Duration | 4.05 |
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| Macaulay Duration | 4.09 |
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| DV01 | — |
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| Convexity | 18.9 |
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Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
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| 2026-12-20 | coupon | 1.050 |
| 2027-06-20 | coupon | 1.050 |
| 2027-12-20 | coupon | 1.050 |
| …（4 omitted）… |
| 2030-06-20 | coupon | 1.050 |
| 2030-12-20 | coupon + redemption | 101.050 |
Related Auctions
Horizon total return settle 2026-09-13 ・ CMT 2026-09-10
| CMT interpolated (rem 4.3y) | 2.156 % → ref. price 99.762 |
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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 | 1.626 | 101.828 | 0.524 | +2.58% | +10.33% |
| -25bp | 1.876 | 100.854 | 0.524 | +1.61% | +6.45% |
| Unchanged (roll-down) | 2.126 | 99.891 | 0.524 | +0.65% | +2.60% |
| +25bp | 2.376 | 98.938 | 0.524 | -0.30% | -1.20% |
| +50bp | 2.626 | 97.995 | 0.524 | -1.24% | -4.96% |
| 6m 2027-03-13 | -50bp | 1.585 | 101.872 | 1.038 | +3.14% | +6.28% |
| -25bp | 1.835 | 100.954 | 1.038 | +2.22% | +4.45% |
| Unchanged (roll-down) | 2.085 | 100.046 | 1.038 | +1.32% | +2.64% |
| +25bp | 2.335 | 99.147 | 1.038 | +0.42% | +0.84% |
| +50bp | 2.585 | 98.257 | 1.038 | -0.47% | -0.93% |
| 12m 2027-09-13 | -50bp | 1.500 | 101.900 | 2.100 | +4.23% | +4.23% |
| -25bp | 1.750 | 101.099 | 2.100 | +3.43% | +3.43% |
| Unchanged (roll-down) | 2.000 | 100.306 | 2.100 | +2.64% | +2.64% |
| +25bp | 2.250 | 99.520 | 2.100 | +1.85% | +1.85% |
| +50bp | 2.500 | 98.742 | 2.100 | +1.08% | +1.08% |