Jim Bianco and Ed Yardeni, two of Wall Street's most closely followed bond watchers, say rising borrowing costs are not a warning sign. Yields, in their view, are simply catching up with economic growth.
That view runs against the standard market narrative, which holds that a "buyers' strike" by "bond vigilantes" fearful of Washington's ballooning debt pile is driving the Treasury sell-off.
The market reaction has nevertheless been sharp. The 30-year Treasury yield traded at 5.662% on Wednesday afternoon, up 3.9 basis points to its highest level in over 24 years. Meanwhile, the 10-year yield is hovering around 5.3% after touching a high since April 2002 on Monday.
For Bianco and Yardeni, however, these historic yield levels reflect economic strength rather than fiscal panic. Both strategists contend that as long as yields remain below nominal GDP growth, the run-up remains grounded in fundamental expansion rather than debt distress.
Why Growth Sets The Price Of Money
The argument rests on a simple benchmark: bond yields versus nominal gross domestic product (GDP).
Because nominal GDP measures total economic expansion before adjusting for inflation, it sets the baseline for lender returns. An investor holding a 2% bond in an economy growing at 6% quickly falls behind.
By that metric, bonds are finally offering fair value. According to Bianco Research, nominal GDP grew 6.3% in the second quarter of 2026. With real growth averaging 2.4% since 2022 and core inflation averaging 3.36% post-COVID, baseline nominal growth is tracking between 5% and 6%.
"For the first time in years, most of the yield curve (blue) is in this expected nominal GDP range," Bianco said in his fourth-quarter outlook, "The Case For Bonds."
History suggests that alignment is the historical norm. Bianco's long-term charts show yields and nominal GDP tracking together for most of the past 125 years. The only major disconnects occurred during the 1930s Great Depression, when yields hit the zero floor, and in the 1940s, when the Fed capped long-term yields at 2.5% to finance World War II, a policy that stood until the 1951 Treasury-Fed Accord.
Bianco Turns Bullish On Bonds For The First Time Since 2020
Bianco had been cautious to bearish on Treasuries for years because he thought yields were too low for the economy. He changed his view once the 5-year through 30-year yields all rose above 5%, which last happened in mid-2007.
He has moved his portfolio's duration to 105% of its benchmark.
Duration measures how sensitive a bond is to interest rates, so a reading above 100% means he is positioned to gain more than the index if yields fall.
He drew a careful line. Bonds are no longer expensive, Bianco said, but "we did not say it is 'cheap.'"
That would require yields to climb above nominal GDP growth.
The math also leans toward buyers.
According to Bianco, a 10-year Treasury would return 12.7% over the next year if yields fell 1 percentage point, and 5.3% if they stayed flat. If yields rose a full percentage point to 6.3%, the loss would be only 1.49%.
"This is the best bond math investors have seen since 2009," he said.
The iShares 20+ Year Treasury Bond ETF (NASDAQ:TLT) has tumbled to its lowest levels on record.
Yardeni: 'Normal For Longer'
Yardeni of Yardeni Research uses the same test. In his Oct. 5 webcast, he put nominal GDP growth at about 6.5% a year, more than a full percentage point above the 10-year yield.
"I'd be telling you the bond vigilantes are working overtime if I saw the 10-year yield rising above nominal GDP growth," Yardeni said.
"It's not higher for longer, it's normal for longer," he added.
The Fed seems to agree. Policymakers raised rates by a quarter point in September by a unanimous vote, and Fed Chair Kevin Warsh described the move as removing accommodation.
His stance comes down to a simple rule. "We'll worry about the government's debt when the Bond Vigilantes do," Yardeni said.
For now, the 10-year yield still sits below the economy's growth rate. The day that changes is the day both strategists say the story becomes a debt story.
