{
  "series_id": "drv.ust.curve",
  "label": "米国債イールドカーブ（全11年限・傾きの分類つき）",
  "layer": 2,
  "source_class": "DERIVED",
  "unit": "percent",
  "cadence": "daily",
  "algorithm": "ust-curve@1",
  "code_sha256": "9b9b4df072d1b5c36f6ea262cd147eb9a35622d3aae189202335c734f2f35f34",
  "code_commit": null,
  "rule_id": "jgb.curve.slope@1",
  "rule_definition": "当日の変化量（bp）を短期側（2年）と超長期側（30年）で比べる。水準の変化は両者の平均の符号、傾きの変化は Δ(30年) − Δ(2年) とする。いずれも 1.0bp 未満のとき UNCHANGED とする。",
  "rule_scope": "分類は当日の変化量を機械的に当てはめた結果である。なぜそう動いたか（政策期待・需給・財政）は述べない。それは解釈であり、当所の領分ではない（会則第8条）。記録として言えるのは『短期より超長期が上がった』までである。",
  "caveat": "H.15の定額満期利回り（Constant Maturity）であり、特定銘柄の利回りではない。日次の確定値であり日中の気配ではない。当日分は16:15 ET に公表される。",
  "tenors": [
    "1m",
    "3m",
    "6m",
    "1y",
    "2y",
    "3y",
    "5y",
    "7y",
    "10y",
    "20y",
    "30y"
  ],
  "spreads": {
    "s2_10": "10y − 2y（bp）",
    "s10_30": "30y − 10y（bp）",
    "s2_30": "30y − 2y（bp）",
    "s3m_10": "10y − 3m（bp）",
    "s5_30": "30y − 5y（bp）"
  },
  "slope_labels": {
    "BEAR_STEEPENING": "上昇・スティープ化（短期より超長期が上がった）",
    "BEAR_FLATTENING": "上昇・フラット化（超長期より短期が上がった）",
    "BULL_STEEPENING": "低下・スティープ化（超長期より短期が下がった）",
    "BULL_FLATTENING": "低下・フラット化（短期より超長期が下がった）",
    "UNCHANGED": "閾値未満（1.0bp）"
  },
  "source": {
    "publisher": "Federal Reserve",
    "release": "H.15 Selected Interest Rates",
    "url": "https://www.federalreserve.gov/releases/h15/"
  },
  "extremes": {
    "10y": {
      "value": "4.730",
      "history_start": "1962-01-02",
      "observations": 16150,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "15.840",
        "date": "1981-09-30"
      },
      "previous_low": {
        "value": "0.520",
        "date": "2020-08-04"
      }
    },
    "1m": {
      "value": "3.840",
      "history_start": "2001-07-31",
      "observations": 6272,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "6.020",
        "date": "2023-05-26"
      },
      "previous_low": {
        "value": "0.000",
        "date": "2008-12-10"
      }
    },
    "1y": {
      "value": "4.150",
      "history_start": "1962-01-02",
      "observations": 16150,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "17.310",
        "date": "1981-09-03"
      },
      "previous_low": {
        "value": "0.040",
        "date": "2021-05-21"
      }
    },
    "20y": {
      "value": "5.210",
      "history_start": "1962-01-02",
      "observations": 14461,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "15.780",
        "date": "1981-09-30"
      },
      "previous_low": {
        "value": "0.870",
        "date": "2020-03-09"
      }
    },
    "2y": {
      "value": "4.340",
      "history_start": "1976-06-01",
      "observations": 12558,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "16.950",
        "date": "1981-09-08"
      },
      "previous_low": {
        "value": "0.090",
        "date": "2021-02-05"
      }
    },
    "30y": {
      "value": "5.220",
      "history_start": "1977-02-15",
      "observations": 12380,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "15.210",
        "date": "1981-10-26"
      },
      "previous_low": {
        "value": "0.990",
        "date": "2020-03-09"
      }
    },
    "3m": {
      "value": "3.900",
      "history_start": "1981-09-01",
      "observations": 11248,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "17.010",
        "date": "1981-09-01"
      },
      "previous_low": {
        "value": "0.000",
        "date": "2008-12-10"
      }
    },
    "3y": {
      "value": "4.410",
      "history_start": "1962-01-02",
      "observations": 16150,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "16.590",
        "date": "1981-09-09"
      },
      "previous_low": {
        "value": "0.100",
        "date": "2020-08-04"
      }
    },
    "5y": {
      "value": "4.480",
      "history_start": "1962-01-02",
      "observations": 16150,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "16.270",
        "date": "1981-09-30"
      },
      "previous_low": {
        "value": "0.190",
        "date": "2020-08-04"
      }
    },
    "6m": {
      "value": "4.020",
      "history_start": "1981-09-01",
      "observations": 11248,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "17.430",
        "date": "1981-09-08"
      },
      "previous_low": {
        "value": "0.020",
        "date": "2011-08-26"
      }
    },
    "7y": {
      "value": "4.590",
      "history_start": "1969-07-01",
      "observations": 14280,
      "is_record_high": false,
      "is_record_low": false,
      "previous_high": {
        "value": "16.050",
        "date": "1981-09-29"
      },
      "previous_low": {
        "value": "0.360",
        "date": "2020-08-04"
      }
    }
  },
  "inversions": {
    "pairs": [],
    "checked_at": "2026-08-28"
  },
  "inversions_rule": {
    "definition": "隣り合う年限で利回りが逆転している区間を検出する。",
    "why": "利回り曲線は年限が長いほど高いのが通常である。隣り合う年限で逆転しているとき、そこに需給の歪みがある。米国では2年と10年の逆転が景気後退の先行指標として語られるが、当所はその主張を採らない。逆転している事実のみを記録する。",
    "no_cause": "当所は原因を述べない。逆転しているという事実と過去の頻度を記録する。",
    "run_note": "1日だけの逆転と何十日も続く逆転は意味が違う。現在の連続日数と記録開始以降の最長を併記する。"
  },
  "extremes_rule": {
    "definition": "最新の確定値が、保持している履歴の中で最高・最低かを比較する。",
    "not_all_time": "『史上最高』とは書かない。当所が保持するのはデータの開始日以降のみで、開始日は年限ごとに異なる（30年は1977年、20年は1993年など）。『記録開始以降で最高』と書き、開始日を必ず添える。",
    "no_importance": "記録更新であることは述べるが、それが重要かは述べない（会則第15条）。",
    "confirmed_only": "判定は財務省の日次確定値のみで行う。取引時間中の気配で記録更新を主張しない。"
  },
  "buyback_confounder": {
    "from": "2026-09-09",
    "to": "2026-11-04",
    "fact": "米財務省は2026年8月19日、長期ゾーンの流動性支援買い戻しについて、1回あたりの上限を20億ドルから『少なくとも40億ドル』へ引き上げると公表した。対象は10-20年と20-30年ゾーン。実施は2026年9月9日から11月4日まで。公表元の説明は『長期ゾーンへのより大きな流動性支援』である。",
    "source": "https://home.treasury.gov/news/press-releases/sb0607",
    "evidence_class": "FACT",
    "why_it_matters": "この期間、長期ゾーンの利回り変動を金融政策への期待だけで読むと、買い戻しによる需給要因と取り違えうる。2年が動かず30年だけ低下する場合、政策期待ではなく需給・期間プレミアム側の寄与を疑う余地がある。当所は全年限を保持しているため、分けて見ることができる。",
    "not_claimed": "買い戻しが長期金利を押し下げるかは当所は述べない。公表元は流動性支援と説明しており、金融緩和とは説明していない。効果の有無・大きさは仮説であって観測ではない（会則第8条）。"
  },
  "latest": {
    "record_id": "drv.ust.curve:2026-08-28:r0:b10e89591483",
    "observation_date": "2026-08-28",
    "observation_precision": "date",
    "publisher_release_at": "2026-08-28T16:15:00-04:00",
    "release_at_method": "rule_derived",
    "release_rule_id": "frb.h15.daily",
    "release_lag_days": 0,
    "release_note": "H.15は当日分を当日16:15 ETに公表",
    "source_first_seen_at": "2026-09-01T13:43:35.778Z",
    "ingested_at": "2026-09-01T13:43:35.836Z",
    "status": "ORIGINAL",
    "revision_seq": 0,
    "supersedes_record_id": null,
    "1m": "3.840",
    "3m": "3.900",
    "6m": "4.020",
    "1y": "4.150",
    "2y": "4.340",
    "3y": "4.410",
    "5y": "4.480",
    "7y": "4.590",
    "10y": "4.730",
    "20y": "5.210",
    "30y": "5.220",
    "s2_10": "39.0",
    "s10_30": "49.0",
    "s2_30": "88.0",
    "s3m_10": "83.0",
    "s5_30": "74.0",
    "delta_bp": {
      "1m": 3.0,
      "3m": 6.0,
      "6m": 8.0,
      "1y": 11.0,
      "2y": 14.0,
      "3y": 11.0,
      "5y": 10.0,
      "7y": 7.0,
      "10y": 6.0,
      "20y": 3.0,
      "30y": 3.0
    },
    "slope_class": "BEAR_FLATTENING",
    "slope_label": "上昇・フラット化（超長期より短期が上がった）",
    "level_change_bp": 8.5,
    "slope_change_bp": -11.0,
    "threshold_bp": 1.0
  },
  "quotation_rule": "slope_class を『財政懸念』などの原因とともに引用しないこと。分類は変化量の当てはめであり、原因の特定ではない。",
  "output_sha256": "3e37f0a1dc815930954ff3b5da3280d27eaaa253739af5733de20ba334e92767",
  "generated_at": "2026-09-01T13:43:35Z",
  "observations_recent": [
    {
      "record_id": "drv.ust.curve:2026-08-28:r0:b10e89591483",
      "observation_date": "2026-08-28",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-28T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
      "ingested_at": "2026-09-01T13:43:35.836Z",
      "status": "ORIGINAL",
      "revision_seq": 0,
      "supersedes_record_id": null,
      "1m": "3.840",
      "3m": "3.900",
      "6m": "4.020",
      "1y": "4.150",
      "2y": "4.340",
      "3y": "4.410",
      "5y": "4.480",
      "7y": "4.590",
      "10y": "4.730",
      "20y": "5.210",
      "30y": "5.220",
      "s2_10": "39.0",
      "s10_30": "49.0",
      "s2_30": "88.0",
      "s3m_10": "83.0",
      "s5_30": "74.0",
      "delta_bp": {
        "1m": 3.0,
        "3m": 6.0,
        "6m": 8.0,
        "1y": 11.0,
        "2y": 14.0,
        "3y": 11.0,
        "5y": 10.0,
        "7y": 7.0,
        "10y": 6.0,
        "20y": 3.0,
        "30y": 3.0
      },
      "slope_class": "BEAR_FLATTENING",
      "slope_label": "上昇・フラット化（超長期より短期が上がった）",
      "level_change_bp": 8.5,
      "slope_change_bp": -11.0,
      "threshold_bp": 1.0
    },
    {
      "record_id": "drv.ust.curve:2026-08-27:r0:92938f8046f0",
      "observation_date": "2026-08-27",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-27T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
      "ingested_at": "2026-09-01T13:43:35.836Z",
      "status": "ORIGINAL",
      "revision_seq": 0,
      "supersedes_record_id": null,
      "1m": "3.810",
      "3m": "3.840",
      "6m": "3.940",
      "1y": "4.040",
      "2y": "4.200",
      "3y": "4.300",
      "5y": "4.380",
      "7y": "4.520",
      "10y": "4.670",
      "20y": "5.180",
      "30y": "5.190",
      "s2_10": "47.0",
      "s10_30": "52.0",
      "s2_30": "99.0",
      "s3m_10": "83.0",
      "s5_30": "81.0",
      "delta_bp": {
        "1m": 1.0,
        "3m": -1.0,
        "6m": 0.0,
        "1y": 2.0,
        "2y": 1.0,
        "3y": 1.0,
        "5y": 1.0,
        "7y": 1.0,
        "10y": 1.0,
        "20y": 1.0,
        "30y": 1.0
      },
      "slope_class": "BEAR_FLATTENING",
      "slope_label": "上昇・フラット化（超長期より短期が上がった）",
      "level_change_bp": 1.0,
      "slope_change_bp": 0.0,
      "threshold_bp": 1.0
    },
    {
      "record_id": "drv.ust.curve:2026-08-26:r0:2b9b3c310fcc",
      "observation_date": "2026-08-26",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-26T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
      "ingested_at": "2026-09-01T13:43:35.836Z",
      "status": "ORIGINAL",
      "revision_seq": 0,
      "supersedes_record_id": null,
      "1m": "3.800",
      "3m": "3.850",
      "6m": "3.940",
      "1y": "4.020",
      "2y": "4.190",
      "3y": "4.290",
      "5y": "4.370",
      "7y": "4.510",
      "10y": "4.660",
      "20y": "5.170",
      "30y": "5.180",
      "s2_10": "47.0",
      "s10_30": "52.0",
      "s2_30": "99.0",
      "s3m_10": "81.0",
      "s5_30": "81.0",
      "delta_bp": {
        "1m": 1.0,
        "3m": -1.0,
        "6m": -1.0,
        "1y": 1.0,
        "2y": 2.0,
        "3y": 4.0,
        "5y": 2.0,
        "7y": 3.0,
        "10y": 2.0,
        "20y": 1.0,
        "30y": 1.0
      },
      "slope_class": "BEAR_FLATTENING",
      "slope_label": "上昇・フラット化（超長期より短期が上がった）",
      "level_change_bp": 1.5,
      "slope_change_bp": -1.0,
      "threshold_bp": 1.0
    },
    {
      "record_id": "drv.ust.curve:2026-08-25:r0:b02afc5f72af",
      "observation_date": "2026-08-25",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-25T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
      "ingested_at": "2026-09-01T13:43:35.836Z",
      "status": "ORIGINAL",
      "revision_seq": 0,
      "supersedes_record_id": null,
      "1m": "3.790",
      "3m": "3.860",
      "6m": "3.950",
      "1y": "4.010",
      "2y": "4.170",
      "3y": "4.250",
      "5y": "4.350",
      "7y": "4.480",
      "10y": "4.640",
      "20y": "5.160",
      "30y": "5.170",
      "s2_10": "47.0",
      "s10_30": "53.0",
      "s2_30": "100.0",
      "s3m_10": "78.0",
      "s5_30": "82.0",
      "delta_bp": {
        "1m": 0.0,
        "3m": -1.0,
        "6m": -1.0,
        "1y": -3.0,
        "2y": -7.0,
        "3y": -6.0,
        "5y": -6.0,
        "7y": -7.0,
        "10y": -6.0,
        "20y": -5.0,
        "30y": -6.0
      },
      "slope_class": "BULL_STEEPENING",
      "slope_label": "低下・スティープ化（超長期より短期が下がった）",
      "level_change_bp": -6.5,
      "slope_change_bp": 1.0,
      "threshold_bp": 1.0
    },
    {
      "record_id": "drv.ust.curve:2026-08-24:r0:9facab670604",
      "observation_date": "2026-08-24",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-24T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
      "ingested_at": "2026-09-01T13:43:35.836Z",
      "status": "ORIGINAL",
      "revision_seq": 0,
      "supersedes_record_id": null,
      "1m": "3.790",
      "3m": "3.870",
      "6m": "3.960",
      "1y": "4.040",
      "2y": "4.240",
      "3y": "4.310",
      "5y": "4.410",
      "7y": "4.550",
      "10y": "4.700",
      "20y": "5.210",
      "30y": "5.230",
      "s2_10": "46.0",
      "s10_30": "53.0",
      "s2_30": "99.0",
      "s3m_10": "83.0",
      "s5_30": "82.0",
      "delta_bp": {
        "1m": -1.0,
        "3m": -1.0,
        "6m": 1.0,
        "1y": 1.0,
        "2y": 0.0,
        "3y": 0.0,
        "5y": -2.0,
        "7y": -2.0,
        "10y": -4.0,
        "20y": -4.0,
        "30y": -4.0
      },
      "slope_class": "BULL_FLATTENING",
      "slope_label": "低下・フラット化（短期より超長期が下がった）",
      "level_change_bp": -2.0,
      "slope_change_bp": -4.0,
      "threshold_bp": 1.0
    },
    {
      "record_id": "drv.ust.curve:2026-08-21:r0:da6678e46d3e",
      "observation_date": "2026-08-21",
      "observation_precision": "date",
      "publisher_release_at": "2026-08-21T16:15:00-04:00",
      "release_at_method": "rule_derived",
      "release_rule_id": "frb.h15.daily",
      "release_lag_days": 0,
      "release_note": "H.15は当日分を当日16:15 ETに公表",
      "source_first_seen_at": "2026-09-01T13:43:35.778Z",
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