Pressure in the U.S. long-term government bond market shows no signs of easing, as the latest auction results underscore a significant shift in investor expectations.

The U.S. Treasury sold $13 billion in 20-year bonds on Tuesday, with the high yield reaching 5.420%. This marks an increase of 21.6 basis points from the 5.204% recorded at the previous auction of the same maturity, setting a new all-time high for this tenor. Notably, this surpasses the previous record of 5.245% established in October 2023.

The bid-to-cover ratio for this auction stood at 2.57 times, slightly above the 2.53 times seen in the prior sale.

Where the market stands now

Despite the elevated yields, the auction results indicate that investors remain willing to absorb long-dated U.S. government debt at higher rates. However, the risk premium demanded on the long end of the curve is clearly climbing, driven by a combination of inflationary pressures, energy prices, fiscal financing needs, and uncertainty surrounding the Federal Reserve's interest rate trajectory.

A closer look at the investor breakdown reveals notable shifts. Indirect bidders, which include foreign central banks and other international institutions, took down 52.47% of the auction, a significant drop from the previous 62.93%. Direct bidders, comprising domestic institutional investors, increased their allocation to 30.68%, up from 24.59%. Primary dealers, who serve as market makers, saw their share rise to 16.85%, compared to 12.49% last time.

Consequently, the auction cannot simply be characterized as reflecting weak demand. The bid-to-cover ratio was actually slightly higher than the previous auction. Nevertheless, the substantially higher high yield and the notable decline in indirect bidder participation clearly signal that the market now requires a greater premium to attract capital into long-duration Treasuries.

Meanwhile, the benchmark 10-year Treasury yield breached the 5% threshold once again on Tuesday, climbing to as high as 5.045% — the highest level seen since 2007.

A global bond selloff weighs on sentiment

The 20-year auction takes place amid considerable volatility in the long-dated U.S. bond market. Treasury Secretary Scott Bessent, testifying at a congressional hearing on Tuesday, attributed the rise in bond yields to "global issues."

On Tuesday, the 10-year yield also touched its highest point since 2007, as bond markets across most major global economies experienced a sharp selloff.

Analysts attribute the upward pressure on U.S. Treasury yields to several factors, including rising oil prices, market expectations that the Fed will raise its policy rate this week, capital competition driven by AI-related spending, and growing concerns about the U.S. fiscal trajectory.

During the hearing, Bessent acknowledged that the increase in 10-year yields reflects, among other things, "the need to address the deficit."

Rising long-dated yields ripple through the economy

The escalation in long-term Treasury yields is being transmitted to the real economy through channels such as mortgages, corporate bonds, and other credit markets.

For instance, the average 30-year fixed mortgage rate has already felt the impact of the 10-year yield breaking above 5%, placing tighter financing constraints on the housing market's recovery prospects.

For equities, higher long-dated yields translate into a higher discount rate used in valuation models. Theoretically, this poses a particular headwind for growth stocks, which rely heavily on expectations of future earnings. However, the U.S. stock market continues to find support from robust corporate earnings growth and the ongoing AI investment boom, and has yet to exhibit risk-off behavior commensurate with the volatility seen in the bond market.