Re:Yield of 0% a First at 3-Month Treasury-Bill Sale
by fiatmoney on Tuesday October 06, 2015 @09:53PM
(#10343728)
They "run at a profit" because they make "interest income on ... U.S. Treasury securities...".
I.e., they are paying the Treasury with money they received from the Treasury, or from bonds guaranteed by the Treasury.
http://www.federalreserve.gov/newsevents/press/other/2015010...