The U.S. Treasury market experienced a substantial selloff, with yields across most maturities reaching their highest levels in nearly two decades. This surge was primarily driven by robust U.S. economic data, including stronger-than-forecast manufacturing and services activity, alongside concerns about persistent inflation fueled by higher oil prices. The selloff intensified after a surprisingly weak demand at a $70 billion five-year Treasury auction, which saw the highest auction yield since 2006.

The 30-year Treasury yield surged closer to 5.4%, reaching its highest level since 2007 and within about 4 basis points of its 2004 peak. The 10-year benchmark rate climbed almost 17 basis points to 5.13%, also its highest since 2007. The five-year note yield surpassed 5% for the first time since 2007. This widespread repricing of the yield curve was seen by analysts like Tony Miano of Wells Fargo Investment Institute as a "genuine re-tightening cycle," indicating higher discount rates for equities and increased borrowing costs.

The Federal Reserve's hawkish stance and recent rate hike, coupled with warnings from officials like Fed Governor Barr about inflation remaining above the 2% target, contributed to the market sentiment. Traders are now pricing in the likelihood of further Fed interest rate hikes, with the swap market fully reflecting three 25-basis-point hikes over the next year and significant hedging for a fourth. This would potentially raise the Fed's target rate as high as 5%. The bond market's turmoil also led to a drop in stock prices, with the S&P 500 Index falling nearly one percent at one point.

Investors are grappling with what Sean Simko, head of fixed-income investment management at SEI Investments, called a "trifecta" of stronger economic data, supply pushing five-year yields to multi-year highs, and sticky global inflation. Christophe Boucher, CIO of ABN AMRO Investment Solutions, noted that Wednesday's economic data would allow the Fed to "double down" on its hawkish stance. The Treasury Department's expanded buyback program, with a $6 billion operation targeting 20- to 30-year maturities, did little to stem the selling pressure, as markets had expected a larger intervention.