Investors typically watch Treasury yields closely, and CNBC reported that the U.S. Treasury may use its $1 trillion General Account (TGA) to fund an expanded bond repurchase program. As a result, U.S. Treasury yields fell on Monday, with the 10-year yield dropping more than 3 basis points to 4.704%, and the 30-year yield falling more than 4 basis points to 5.234%, its highest level since 2007.