The effective duration of a 30-year Treasury is about 21 years, while it's about 8.7 years for a 10-year Treasury. That means that if yields rose across the curve by 1 percentage point, owners of The spread between 2-year US Treasury securities and 30-year US Treasury securities defines the slope of the yield curve, which in this case is 259 basis points. (Note: There is no industry-wide The GuruFocus Yield Curve page contains the following sections: Header, Current Yield Curve, Historical Yield Curve and Yield Curve Definition. The Header section gives you the one-month yield, the one-year yield, the 10-year yield and the 30-year yield as of the current date. On the other hand, the Current Yield Curve section contains two charts.