U.S. sovereign bond prices were mixed on Monday as investors eyed Treasury auctions and digested speeches by Federal Reserve officials.
The yield on the 10-year Treasury note, which moves inversely to its price, traded about flat at 1.839 percent, while the yield on the 30-year Treasury bond barely budged to 2.632 percent.
Most shorter-dated yields rose, with the two-year climbing to 0.893 percent.
On Tuesday, the Treasury Department will sell $26 billion in two-year notes, the first of three auctions scheduled for this week.
Fed watchers will keep an eye on three speeches by representatives, as a growing number of officials have come out with hawkish views on U.S. interest rates.
Over the weekend, Boston Fed President Eric Rosengren told the Financial Times that conditions for a Fed rate increase are "on the verge of being broadly met," adding he was prepared to support a more hawkish stance as key economic and financial indicators revealed more positive data.
The first speech Monday was be delivered by St. Louis Federal Reserve President James Bullard at a financial institution forum in Beijing.
"Labor markets are relatively tight. This may put upward pressure on inflation going forward," Bullard said.
San Francisco Fed President John Williams said in another speech that two-to-three rate hikes seem likely for this year.
Finally, Philadelphia Fed President Patrick Harker will provide an economic outlook at one of the bank's own events at 6:30 p.m. ET.
No major data is expected.