Market Yield on U.S. Treasury Securities at 1-Year Constant Maturity, Quoted on an Investment Basis

WGS1YRratesFree tier

Series IDWGS1YR
UnitsPercent
FrequencyWeekly, Ending Friday
Categoryrates
Latest observation2026-10-16
HistoryPoint-in-time: every value as first published plus each revision, so backtests see only what was known on the day

Latest reading

The latest Market Yield on U.S. Treasury Securities at 1-Year Constant Maturity, Quoted on an Investment Basis observation, for 2026-10-16, is 4.49 Percent, up from 4.45 for 2026-10-09. It has not been revised since it was first published. 0.1% of observations in this history were revised after first release.

Latest observation2026-10-16
Latest value4.49 Percent
Previous4.45 (2026-10-09)
Change0.04 (+0.9%)
First published value4.49
Last release2026-10-19
Vintages stored1,558
Observations3,381

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df.tail()

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