US sells $39.7B of 28-day bills at 0.015% By Scalper1 | December 18, 2012 0 Comment FXstreet.com (Barcelona) Continued here: US sells $39.7B of 28-day bills at 0.015% Related posts: US sells 32B of 6-Month Bills at 0.09% US sells 32B of 3-Month Bills at 0.04% Portugal 6 months Treasury bills auction: 1.7% Portugal 18 months Treasury bills auction: 2.967%