Treasury spread
I can see the treasury yields using the symbols US2Y (as an example). I wanted to get symbols for spreads as well. For example, I want to plot the (US treasuries - the fed fund rates).
The fred website currently provides them. Please use the link to st luis fed website as an example.
https://fred.stlouisfed.org/graph/?id=T10YFF,T3MFF,T6MFF,CPFF,T5YFF,T1YFF,