Three Views of the US Yield Curve — and One Uncomfortable Conclusion

Something important is happening in the US Treasury market, but three different arguments are becoming entangled.

The Federal Reserve is trying to control inflation without unnecessarily damaging the economy. Stanley Druckenmiller believes the bond market is delivering a fiscal warning that should not be suppressed. Brent Johnson of Santiago Capital sees the same system through the world’s structural dependence on dollars.

Each is looking at a different part of the machinery. Taken together, they explain why the US yield curve may now be one of the most important signals in global markets.

Start with what the Federal Reserve is doing

The Federal Reserve controls the overnight policy rate, not the entire yield curve.

At its July meeting, the Fed held the federal-funds target range at 3.5% to 3.75%. The decision was unusually divided, passing by nine votes to three. The Fed also maintained its policy of supplying “ample reserves” to the banking system.

This anchors the short end of the yield curve. Two-year Treasury yields largely reflect where investors expect Fed policy to move over the next few years.

The long end is different. Ten- and 30-year yields incorporate expected inflation and growth, but also government borrowing, debt sustainability and the “term premium”—the additional return investors require for accepting decades of uncertainty.

The curve is therefore delivering two related but distinct messages.

The relatively high front end says the Fed cannot yet declare victory over inflation. The higher and rising long end says investors are becoming less comfortable with America’s fiscal trajectory and the supply of debt they are being asked to absorb.

The Fed’s July minutes showed that Treasury yields had already risen by 25 to 30 basis points, driven largely by higher real yields. Markets were pricing further policy tightening, while investors were simultaneously reassessing longer-term risks.

The result is a steepening curve—but not necessarily the benign steepening normally associated with an improving economy.

When long-term yields rise faster than short-term yields, borrowing costs increase across mortgages, infrastructure, corporate finance and government refinancing. The curve is effectively tightening financial conditions even while the Fed remains on hold.

Treasury has now entered the argument

The US Treasury recently announced that it would at least double its purchases of long-dated government bonds, increasing the maximum from $2 billion to $4 billion per operation. The buybacks will target securities in the 10-to-30-year area of the curve.

Treasury describes these operations as liquidity support. Technically, that is reasonable: buying older, less frequently traded bonds can improve the functioning of the market without formally targeting the yield on newly issued securities.

But the timing matters.

The announcement followed the 30-year Treasury yield reaching approximately 5.3%, its highest level since 2007. Yields immediately declined before subsequently reversing much of the move.

Although the Fed and Treasury are separate institutions, their policies now appear to be pulling in different directions. The Fed is reviewing whether its balance sheet should have a smaller market footprint. Treasury, meanwhile, is adding demand at the long end just as yields become politically and economically uncomfortable.

That tension brings us to Stanley Druckenmiller.

Druckenmiller: the market is not broken

Druckenmiller’s argument is that the bond market was functioning normally before Treasury intervened.

There had been no failed auction, forced liquidation or seizure of dealer balance sheets. This was not March 2020 in US Treasuries or September 2022 in UK gilts. Trading remained orderly.

In his view, long-term yields were rising because investors were rationally pricing persistent inflation, a deficit of approximately 6% of GDP, federal debt above $40 trillion and annual interest expenditure expected to exceed $1.1 trillion.

His conclusion is deceptively simple: the yield curve is not malfunctioning. It is communicating.

Intervention risks confusing an unwelcome price with a broken market. More importantly, it may introduce a new source of uncertainty. If investors conclude that Treasury intends to manage long-term borrowing costs, they may demand an even larger premium for holding long-duration debt.

Attempts to suppress the term premium could ultimately increase it.

Santiago: the world still needs dollars

Brent Johnson, founder of Santiago Capital, approaches the problem from the opposite direction.

His Dollar Milkshake Theory begins with the enormous quantity of dollar borrowing outside the United States. According to the Bank for International Settlements, foreign-currency dollar credit reached approximately $14.7 trillion by March 2026.

These borrowers need dollars to meet interest and principal payments. When liquidity tightens or geopolitical stress rises, that structural requirement can create additional demand for the currency.

This explains why America can have deteriorating public finances without automatically suffering a dollar collapse. The US may be deeply indebted, but the rest of the world remains deeply dependent upon its currency.

The recent threat to remove entities connected with Iran from the dollar system illustrates that dependence. It demonstrates that dollar access is both a financial necessity and an instrument of American power.

But Johnson’s framework also contains a warning. A stronger dollar makes offshore liabilities more expensive to service. That can force foreign borrowers to sell assets, reduce lending or compete more aggressively for liquidity. Dollar strength can therefore tighten global financial conditions even if the Fed does nothing.

How the three views fit together

These arguments are not mutually exclusive.

The Fed is explaining the cyclical problem: inflation remains too persistent to permit easy monetary policy.

Druckenmiller is explaining the fiscal problem: investors increasingly want compensation for lending long term to a heavily indebted government.

Santiago is explaining the international problem: the world’s dependence on dollar funding can amplify whatever happens in the US bond market.

The yield curve is where all three forces meet.

Short rates reflect the Fed’s inflation constraint. Long rates reflect fiscal supply and term-premium risk. The dollar transmits those conditions globally through trade, debt and collateral.

The understandable conclusion is not that the dollar must collapse, nor that Treasury yields must continue rising indefinitely. It is that policymakers can no longer assume the different parts of the system will cooperate automatically.

The Fed can determine the overnight price of money. Treasury can alter the maturity and composition of government borrowing. But neither can permanently dictate the return investors require for accepting long-term inflation and fiscal risk.

Meanwhile, the dollar may remain strong precisely because global borrowers cannot easily escape it. That strength is not necessarily reassuring: it may be the mechanism through which US financial pressure is transmitted to the rest of the world.

The yield curve is therefore telling us something larger than where interest rates might move next.

It is revealing the growing tension between monetary control, fiscal credibility and global dollar dependence.

The Fed controls the short end. Treasury can influence market mechanics. But the long end still belongs to investors—and they are beginning to ask a higher price.

This article is for information only and does not constitute investment advice or a personal recommendation. Capital is at risk, and the value of investments can fall as well as rise.