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

DGS1ratesFree tier

Series IDDGS1
UnitsPercent
FrequencyDaily
Categoryrates
Latest observation2026-10-08
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 2026-10-08, is 4.44 Percent, up from 4.42 for 2026-10-07. It has not been revised since it was first published. 0.0% of observations in this history were revised after first release.

Latest observation2026-10-08
Latest value4.44 Percent
Previous4.42 (2026-10-07)
Change0.02 (+0.5%)
First published value4.44
Last release2026-10-09
Vintages stored5,127
Observations16,178

Get it in Python

import finzdata as yf
df = yf.Client().macro("DGS1")
df.tail()

Or chart it live on FinzData Explore.

Get a free API keySee history bundlesDownload free samples

Related rates series