Year-to-date, the Vanguard Extended Duration Treasury ETF (NYSEARCA: EDV) declined 18.2%, the SPDR Portfolio Long Term Treasury ETF (NYSEArca: SPTL) decreased 17.5% and iShares 20+ Year Treasury Bond ETF (NASDAQ: TLT) fell 18.2%. The Treasuries market was pummeled after a spike in inflation dragged on real returns and a hawkish Federal Reserve hiked interest rates. A Bloomberg index of long-term U.S. government bonds has retreated more than 18% this year, or on pace for its biggest fallback on record dating back to 1973, the Financial Times reports.