Yields Surge After Terrible 20Y Auction With Biggest Tail On Record By: TalkMarkets February 21, 2024 at 13:46 PM EST The bid to cover tumbled to 2.39, down from 2.53, well below the 2.59 six-auction average, and was the lowest since August 2022. Read More >> Related Stocks: 20+ Year Treas Bond Ishares ETF