{"slug":"t-bill-maturities-and-yields","qid":"nine_month","label":"A nine-month estimate, interpolated between the 3-month and 1-year points","post_title":"T-Bill Maturities and How Yields Are Quoted","post_url":"/blog/t-bill-maturities-and-yields#q-nine_month","columns":["week","week_label","bill_3m_pct","interp_9m_pct","bill_1y_pct"],"rows":[{"week":"2026-03-30","week_label":"Mar 30","bill_3m_pct":3.7,"interp_9m_pct":3.7,"bill_1y_pct":3.69},{"week":"2026-04-06","week_label":"Apr 6","bill_3m_pct":3.7,"interp_9m_pct":3.7,"bill_1y_pct":3.69},{"week":"2026-04-13","week_label":"Apr 13","bill_3m_pct":3.71,"interp_9m_pct":3.69,"bill_1y_pct":3.69},{"week":"2026-04-20","week_label":"Apr 20","bill_3m_pct":3.69,"interp_9m_pct":3.68,"bill_1y_pct":3.68},{"week":"2026-04-27","week_label":"Apr 27","bill_3m_pct":3.68,"interp_9m_pct":3.71,"bill_1y_pct":3.72},{"week":"2026-05-04","week_label":"May 4","bill_3m_pct":3.69,"interp_9m_pct":3.74,"bill_1y_pct":3.76},{"week":"2026-05-11","week_label":"May 11","bill_3m_pct":3.69,"interp_9m_pct":3.76,"bill_1y_pct":3.8},{"week":"2026-05-18","week_label":"May 18","bill_3m_pct":3.67,"interp_9m_pct":3.77,"bill_1y_pct":3.82},{"week":"2026-05-25","week_label":"May 25","bill_3m_pct":3.69,"interp_9m_pct":3.76,"bill_1y_pct":3.8},{"week":"2026-06-01","week_label":"Jun 1","bill_3m_pct":3.78,"interp_9m_pct":3.82,"bill_1y_pct":3.84},{"week":"2026-06-08","week_label":"Jun 8","bill_3m_pct":3.79,"interp_9m_pct":3.84,"bill_1y_pct":3.87},{"week":"2026-06-15","week_label":"Jun 15","bill_3m_pct":3.81,"interp_9m_pct":3.88,"bill_1y_pct":3.91},{"week":"2026-06-22","week_label":"Jun 22","bill_3m_pct":3.84,"interp_9m_pct":3.94,"bill_1y_pct":3.99},{"week":"2026-06-29","week_label":"Jun 29","bill_3m_pct":3.85,"interp_9m_pct":3.94,"bill_1y_pct":3.98},{"week":"2026-07-06","week_label":"Jul 6","bill_3m_pct":3.86,"interp_9m_pct":3.97,"bill_1y_pct":4.03},{"week":"2026-07-13","week_label":"Jul 13","bill_3m_pct":3.85,"interp_9m_pct":3.96,"bill_1y_pct":4.02},{"week":"2026-07-20","week_label":"Jul 20","bill_3m_pct":3.91,"interp_9m_pct":4.04,"bill_1y_pct":4.1},{"week":"2026-07-27","week_label":"Jul 27","bill_3m_pct":3.87,"interp_9m_pct":4.01,"bill_1y_pct":4.08},{"week":"2026-08-03","week_label":"Aug 3","bill_3m_pct":3.89,"interp_9m_pct":3.99,"bill_1y_pct":4.04},{"week":"2026-08-10","week_label":"Aug 10","bill_3m_pct":3.88,"interp_9m_pct":3.96,"bill_1y_pct":4},{"week":"2026-08-17","week_label":"Aug 17","bill_3m_pct":3.87,"interp_9m_pct":3.96,"bill_1y_pct":4},{"week":"2026-08-24","week_label":"Aug 24","bill_3m_pct":3.86,"interp_9m_pct":3.99,"bill_1y_pct":4.05},{"week":"2026-08-31","week_label":"Aug 31","bill_3m_pct":3.91,"interp_9m_pct":4.07,"bill_1y_pct":4.15},{"week":"2026-09-07","week_label":"Sep 7","bill_3m_pct":3.99,"interp_9m_pct":4.15,"bill_1y_pct":4.24},{"week":"2026-09-14","week_label":"Sep 14","bill_3m_pct":4.12,"interp_9m_pct":4.31,"bill_1y_pct":4.41},{"week":"2026-09-21","week_label":"Sep 21","bill_3m_pct":4.2,"interp_9m_pct":4.38,"bill_1y_pct":4.48}],"shape":"series","sql":"SELECT\n    toString(toMonday(date))                AS week,\n    formatDateTime(toMonday(date), '%b %e') AS week_label,\n    round(avg(toFloat64(yield_3_month)), 2) AS bill_3m_pct,\n    round(avg(\n        toFloat64(yield_3_month)\n        + (toFloat64(yield_1_year) - toFloat64(yield_3_month)) * (273 - 91) / (365 - 91)\n    ), 2)                                   AS interp_9m_pct,\n    round(avg(toFloat64(yield_1_year)), 2)  AS bill_1y_pct\nFROM global_markets.treasury_yields\nWHERE date >= '2026-04-01'\n  AND date <  '2026-09-26'\n  AND yield_3_month > 0\n  AND yield_1_year  > 0\nGROUP BY week, week_label\nORDER BY week","computed_at":"2026-10-07T15:21:17.255284+00:00","elapsed":0.003072755}