{"uid":"cap_qfEI9tgcxK2YszyMVD6oI","slug":"stationfx-30-year-u-s-treasury-constant-maturity-yield-92512bf5","name":"StationFX 30-Year U.S. Treasury Constant Maturity Yield","description":"Ultra-long U.S. government bond yield representing 30-year borrowing costs. Most sensitive to long-run inflation expectations and fiscal concerns. Used for duration analysis and pension/insurance liability matching. Daily frequency.","url":"https://stationfx.com/economic-data/interest-rates/market-yield-on-u-s-treasury-securities-at-30-year-constant-maturity-quoted-on-an-investment-basis?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http","description":"Always \"http\" for HTTP endpoints"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string","description":"HTTP method. 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Pull the latest data from StationFX in JSON format.","exampleUseCases":[{"title":"Duration risk monitoring for bond portfolio","prompt":"Pull the 30-year Treasury yield from StationFX for the past 12 months — I want to see the daily values along with their 5-year z-scores and percentile ranks so I can assess duration risk in my long bond portfolio."},{"title":"Pension liability discount rate review","prompt":"Get me the 30-year U.S. Treasury constant maturity yield for the last quarter — I need the raw yield values and rolling 12-month averages to use as a discount rate benchmark for our pension liability matching analysis."},{"title":"Long-run inflation expectations tracker","prompt":"Show me how the 30-year Treasury yield has moved year-over-year from January 2023 to today — include the yoy_change and above_trend fields so I can gauge shifts in long-run inflation expectations."}],"resultDescription":"Returns a JSON array of daily observations, each containing the date, raw 30-year yield value (in percent), month-over-month and year-over-year absolute and percentage changes, 12-month and 5-year z-scores, 5-year percentile rank, 3-month and 12-month rolling averages, and a binary above-trend indicator. 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It includes pre-computed statistical enrichments (z-scores, percentile ranks, trend flags) that save downstream computation versus raw FRED data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T00:45:10.626Z","isFirstParty":false,"canonicalSlug":"stationfx-30-year-u-s-treasury-constant-maturity-yield-92512bf5"}