Economic Dangers of the 10-Year U.S. Treasury Yield at 18 Month High!

By the Curmudgeon with Victor Sperandeo

Introduction:

The 10-year U.S. Treasury yield closed at 4.71% on Thursday, July 23^rd -- its highest rate since January 15, 2025, and in all of Trump’s second term as President. It’s a clear warning sign that intermediate- and long-term borrowing costs remain stubbornly high, with potentially serious consequences for housing, corporate credit, fiscal policy, and equity valuations.

Treasury real yields (after inflation) have also risen, says Andrew of Barron's:

"Real five-to-10-year yields hadn’t reached current levels since 2023-24. As for 30-year maturities, you would have to go back to the 2008-09 financial crisis to encounter real yields of nearly 3%."

The rise in real yields means the market is pricing in a higher cost of capital, according to John Thorndike of GMO. That reflects the demand for funding the buildout of artificial-intelligence projects, the robust accompanying need for energy projects, and the “term premium” to compensate investors for the risk of government borrowing to cover huge and persistent deficits.

Here’s a chart showing the persistent increase in yields for the 10-year U.S. T-note:

Backgrounder:

On February 5, 2025, Treasury Secretary Scott Bessent said on Fox Business that he and President Trump were focused on the 10-year Treasury yield rather than short-term Fed controlled rates. That was a politically convenient statement, but markets now have a way of exposing such bogus claims. If the 10-year U.S. T-note is back at or above the level implied by that earlier remark, then the idea that the administration could easily manage long rates looks increasingly naïve if not deceptive.

The problem is simple: the 10-year T-note yield is the cost of credit that matters most to the real economy. It influences mortgage rates, corporate borrowing, municipal government financing, auto loans, and the discount rate used to value stocks. When that benchmark rises to a multi-month or multi-year high, the economy does not feel relief — it feels a tightening of financial conditions.

Short-term rates are important too. There’s a FOMC meeting this coming week (July 28-29), but the Fed does NOT control intermediate or long-term rates. We’ve many times stated that the 10-year U.S. yield was significantly LOWER in September 18, 2024, then it is now (by almost a full percentage point).

àPlease see our companion piece for Victor’s contrary view.

Why the 10-Year Matters:

The 10-year Treasury sits at the center of the U.S. financial system. It is the benchmark for pricing risk across much of the economy, especially for mortgages and investment-grade debt. When the yield rises, it becomes more expensive to finance homes, factories, inventories, acquisitions, and government deficits.

This matters even more when the economy is already carrying heavy debt. Higher long-term rates do not just affect new borrowing; they also roll through refinancing, debt service, and investor psychology. A higher 10-year yield tells markets that capital is scarcer, inflation risk is not fully contained, or both.

For homeowners, the effect is immediate. Mortgage rates generally move with long Treasury yields and mortgage-backed securities spreads. That means affordability weakens, housing turnover slows, refinancing’s dry up, and the housing sector becomes a drag rather than a support for growth.

Damage to U.S. Economic Growth:

A 4.71% 10-year yield is a huge headwind for real GDP growth. Businesses facing higher capital costs delay marginal projects, reduce hiring plans, and become more selective about expansion. That slows productivity gains and weakens future earnings growth.

The damage can also be self-reinforcing. Higher long rates can suppress demand, which weakens earnings, which in turn hurts business confidence and capital spending. If credit conditions tighten enough, the economy can move from a slowdown to something more destabilizing.

This is especially dangerous if inflation is not falling fast enough to justify the yield level. Then the market is effectively saying that growth is being taxed by rates without enough compensation in terms of real return. That is how you get lower valuations, higher default risk, and a more fragile economy.

Pressure on U.S. Fiscal Policy:

The federal government is also highly exposed. Every increase in intermediate and long-term rates raises the cost of financing the national debt, and that cost compounds over time as maturing debt is rolled over. A 10-year yield near 4.71% makes fiscal arithmetic much less forgiving.

That creates an ugly feedback loop. Higher deficits can put upward pressure on long rates, and higher long rates worsen deficit dynamics by increasing interest expense. Markets may eventually force policymakers to confront the consequences of chronic borrowing.

This is why talk about “managing” the 10-year matters – now more than ever with the economy slowing. If government officials claim the yield is the key variable, then they are implicitly acknowledging that bond investors, not politicians, are setting the terms of economic reality. When the bond market pushes back, credibility erodes fast.

Equity Market Impact:

Stocks are not immune to the potential damage. A higher 10-year yield raises the discount rate used in equity valuation, which is particularly painful for long-duration growth stocks and speculative names. The more the market has been priced for perfection, the more vulnerable it becomes to a rate shock.

That means valuation multiples can compress even if earnings remain decent. In plain English, a company can do fine operationally and still see its stock price fall because investors are no longer willing to pay the same multiple for future profits. That is especially true for AI, software, and other high-expectation sectors.

A sustained move in the 10-year also tends to favor defensive sectors over cyclical and growth names. Utilities, staples, and short-duration cash-generating businesses can look better relative to richly valued momentum stocks. In other words, a high 10-year yield is not just a bond-market story; it is a cross-asset repricing event.

Credit and Liquidity:

Credit markets are another pressure point. Higher Treasury yields often spill into corporate bond yields, leveraged loans, and private credit pricing. That raises refinancing risk for weaker borrowers and can expose balance sheets that were built on the assumption of easy money.

When liquidity tightens, marginal speculation becomes less attractive. That can uncover problems that were hidden during the low-rate era: over-levered balance sheets, aggressive buybacks, weak covenants, and circular financing structures. Markets that seemed calm can reprice abruptly once funding gets more expensive.

The danger is not just defaults. It is the broader tightening of financial conditions that forces companies, households, and institutions to behave more defensively. That is how a rate move becomes an economic story rather than a bond-market story.

The Credibility Problem:

Secretary Bessent’s February 2025 remark was built around the idea that the 10-year yield would be the key barometer. But if the yield is now back to, or above, that earlier level, then the claim looks less like a policy insight and more like a sound bite.

Markets do not reward rhetoric. They reward credible policy, consistent execution, and outcomes that match the story being told. If long rates remain elevated despite political reassurance, investors will conclude that the bond market has its own view — and that view matters more than official messaging.

The 10-year yield is not just a number to watch; it is a verdict on inflation, fiscal discipline, and policy credibility. At 4.71%, that verdict is not favorable.

Curmudgeon’s Conclusions:

· A 10-year Treasury yield at 4.71% is economically dangerous because it tightens conditions across housing, credit, fiscal policy, and equity markets all at once. It is the kind of rate level that can slow economic growth, compress valuations, and exposes the consequences of too much debt.

· If policymakers thought the 10-year could be talked down, the market is now reminding them otherwise. U.S. Note and Bond investors –not the Fed- set the interest rates for capital, and the economy must live with that price.

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Wishing you good health, success and good luck. Till next time…..

The Curmudgeon
ajwdct@gmail.com

Follow the Curmudgeon on Twitter @ajwdct247

Curmudgeon is a retired investment professional. He has been involved in financial markets since 1968 (yes, he cut his teeth on the 1968-1974 bear market), became an SEC Registered Investment Advisor in 1995, and received the Chartered Financial Analyst designation from AIMR (now CFA Institute) in 1996. He managed hedged equity and alternative (non-correlated) investment accounts for clients from 1992-2005.

Victor Sperandeo is a historian, economist and financial innovator who has re-invented himself and the companies he's owned (since 1971) to profit in the ever-changing and arcane world of markets, economies, and government policies. Victor started his Wall Street career in 1966 and began trading for a living in 1968. As President and CEO of Alpha Financial Technologies LLC, Sperandeo oversees the firm's research and development platform, which is used to create innovative solutions for different futures markets, risk parameters and other factors.

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