Core Viewpoint - US Treasury yields declined slightly across the board due to multiple factors, including strong demand for a $13 billion 20-year bond auction, which supported the bond market and led to a decrease in yields [1]. Group 1: Treasury Yield Movements - US Treasury yields fell by 1.5 to 1 basis points, with short and medium-term securities leading the decline [1]. - The yield spread between 2-year and 10-year bonds decreased by 0.09 basis points, while the spread between 5-year and 30-year bonds increased by 0.11 basis points [1]. Group 2: Auction Performance - The 20-year Treasury auction showed strong performance, with the awarded yield 1.2 basis points lower than pre-auction trading levels [1]. - The allocation to dealers was 10%, with indirect bidders receiving 63.6% and direct bidders receiving 26.3% of the auction [1]. Group 3: Market Influences - The dollar swap spread widened during the early US session, reaching a daily high [1]. - Reports indicated that the Federal Reserve presented a revised plan to other regulatory bodies, easing capital proposals for large Wall Street banks [1]. Group 4: Options Activity - Significant trading activity was noted in Treasury options, including a large purchase of December 10-year Treasury straddles with a premium of approximately $22 million, and a substantial purchase of November 10-year put options [1].