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

DGS1MOratesFree tier

Series IDDGS1MO
UnitsPercent
FrequencyDaily
Categoryrates
Latest observation2026-10-22
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-Month Constant Maturity, Quoted on an Investment Basis observation, for 2026-10-22, is 4.11 Percent, up from 4.09 for 2026-10-21. It has not been revised since it was first published. 0.0% of observations in this history were revised after first release.

Latest observation2026-10-22
Latest value4.11 Percent
Previous4.09 (2026-10-21)
Change0.02 (+0.5%)
First published value4.11
Last release2026-10-23
Vintages stored5,132
Observations6,309

Get it in Python

import finzdata as yf
df = yf.Client().macro("DGS1MO")
df.tail()

Or chart it live on FinzData Explore.

Get a free API keySee history bundlesDownload free samples

Related rates series