What Treasury securities are included?
We provide yields for Treasury bills (1M, 3M, 6M, 1Y), notes (2Y, 3Y, 5Y, 7Y, 10Y), bonds (20Y, 30Y), TIPS (5Y, 10Y, 30Y), and floating rate notes.
How often are yields updated?
Treasury yields are updated daily after market close, reflecting the official rates published by the US Treasury Department.
Can I get historical yield data?
Yes, use the date parameter in YYYY-MM-DD format to retrieve yields for any historical date. This enables yield curve analysis over time.
What is the 10-year Treasury yield used for?
The 10-year Treasury yield is a key benchmark for mortgage rates, corporate bond pricing, and economic sentiment. It is widely watched as an indicator of long-term interest rate expectations.
What are TIPS?
Treasury Inflation-Protected Securities (TIPS) are bonds indexed to inflation. The principal adjusts with CPI, protecting investors from inflation. Our API provides TIPS yields for 5Y, 10Y, and 30Y maturities.
How do I calculate the yield spread?
Yield spread is the difference between two yields. For example, the 10Y-2Y spread (notes["10year"] - notes["2year"]) is watched for yield curve inversion signals.
