- A negotiable debt obligation issued by the US government and backed by its full faith and credit,. Eamonn Fitzgerald's WASHINGTON Video: The West Wing (Cast), Interest rates on short-term Treasury bills fell in Monday's auction with rates on six-month bills dropping to the lowest level in 2 12 years..

See also: Selected Treasury Bill Yields: 10-Year Lookup. Treasury bill auction, average yield: 3 month Previous data. GRAPH PERIOD: 2 Jan 2007 - 1 Jan 2008. Q: We are retired, in our seventies and want to preserve our investment principal.

Are Treasury notes a good investment for us?. WTB1YS, 1-Year Treasury Bill: Secondary Market Rate (DISCONTINUED SERIES). WTB3MA, 3-Month Treasury Bill Rate: Auction