By
The New York Fed's Empire State general business conditions index fell to -3.58 in December from November's 10.16 reading, falling to negative territory for the first time since January 2013.
The yield on benchmark 10-year Treasuries notes was last 2.111 percent, up 0.8 basis points from late on Friday. Before the New York Fed data, the 10-year yield hovered near its session high of 2.134 percent.