Treasuries are starting the week on an optimistic note, buoyed by tumbling oil prices and assurances that tens of billions of dollars in Japanese currency interventions won't be funded from sales of US government debt.

The positive momentum follows comments from Scott Bessent, who pledged that any yen-strengthening measures would not rely on liquidating US Treasuries. This commitment helped reassure investors about the safety of US debt markets.

Falling oil prices also contributed to the upbeat tone, as lower energy costs reduce inflationary pressures and improve the outlook for consumer spending and economic growth.

Market participants are closely watching how Federal Reserve policy and global economic developments may influence Treasury yields and the broader fixed-income landscape throughout the week.