bonds / 20Y / JGB (20-Year) No. 128
Bond Information
| Name | JGB (20-Year) No. 128 |
|---|
| ISIN | — |
|---|
| Issue # | 128 |
|---|
| Coupon (%) | 1.9% semi-annual |
|---|
| Issue Date | 2011-06-20 |
|---|
| Maturity | 2031-06-20 （Remaining 4.8y） |
|---|
| Outstanding | ¥2.8T （2026-03-31・MOF） |
|---|
| Total issued | ¥2.7T （annual report, FY-end） |
|---|
| Statutory basis | 4条借換前倒 |
|---|
| STRIPS principal | ¥400M （2026-06-30） |
|---|
| SLF usage | last 30d ¥3.1B／ total ¥139.6B（last 2026-08-17・BOJ） |
|---|
| BOJ Holding | ¥1.7T（60.8%）（as of 2026-08-10・Source: BOJ・Ratios approximate due to differing as-of dates） |
|---|
| Status | active |
|---|
Results
Yield Calculator (price input) | Simple Yield | 1.900 % |
|---|
| Compound Yield | 1.8987 % |
|---|
| Accrued Interest | 0.333151 (64 days) per 100 |
|---|
| Settlement Amount | — |
|---|
| Modified Duration | 4.58 |
|---|
| Macaulay Duration | 4.62 |
|---|
| DV01 | — |
|---|
| Convexity | 23.8 |
|---|
Estimates based on the input price.
Cashflow Schedule
| Date | Type | Amount (per 100) |
|---|
| 2026-12-20 | coupon | 0.950 |
| 2027-06-20 | coupon | 0.950 |
| 2027-12-20 | coupon | 0.950 |
| …（5 omitted）… |
| 2030-12-20 | coupon | 0.950 |
| 2031-06-20 | coupon + redemption | 100.950 |
Related Auctions
Horizon total return settle 2026-08-23 ・ CMT 2026-08-20
| CMT interpolated (rem 4.8y) | 2.105 % → ref. price 99.059 |
|---|
| G-spread (vs interpolated CMT) | — |
|---|
| Horizon | Scenario | Yield@H | Price@H | Carry | Total return | Ann. |
|---|
| 3m 2026-11-23 | -50bp | 1.573 | 101.434 | 0.479 | +2.87% | +11.49% |
| -25bp | 1.823 | 100.332 | 0.479 | +1.76% | +7.05% |
| Unchanged (roll-down) | 2.073 | 99.244 | 0.479 | +0.67% | +2.67% |
| +25bp | 2.323 | 98.170 | 0.479 | -0.41% | -1.65% |
| +50bp | 2.573 | 97.108 | 0.479 | -1.48% | -5.92% |
| 6m 2027-02-23 | -50bp | 1.541 | 101.494 | 0.955 | +3.41% | +6.82% |
| -25bp | 1.791 | 100.449 | 0.955 | +2.36% | +4.72% |
| Unchanged (roll-down) | 2.041 | 99.417 | 0.955 | +1.32% | +2.64% |
| +25bp | 2.291 | 98.397 | 0.955 | +0.30% | +0.59% |
| +50bp | 2.541 | 97.389 | 0.955 | -0.72% | -1.44% |
| 12m 2027-08-23 | -50bp | 1.467 | 101.598 | 1.900 | +4.47% | +4.47% |
| -25bp | 1.717 | 100.667 | 1.900 | +3.53% | +3.53% |
| Unchanged (roll-down) | 1.967 | 99.746 | 1.900 | +2.60% | +2.60% |
| +25bp | 2.217 | 98.835 | 1.900 | +1.69% | +1.69% |
| +50bp | 2.467 | 97.933 | 1.900 | +0.78% | +0.78% |