Treasury Yields Hit 2002 High as Fed Hikes and AI Debt Collide

A bond selloff reaches a 24-year milestone

Long-term borrowing costs in the United States have climbed to levels not seen in a generation. On October 7, the yield on the 10-year Treasury note rose above 5.35%, its highest reading since 2002, while the 30-year bond reached 5.70%. 1 Earlier that week, on Monday, October 5, Treasury yields were already surging to their highest level since 2002. 3

The reported numbers vary depending on when each snapshot was taken. One market report put the 10-year at 5.15% during a Thursday session and described the 30-year yield as the highest since 2004. 2 Another account characterized the 30-year's 5.70% level more broadly as a multi-decade high. 1 These figures are best understood as frames from a fast-moving selloff rather than contradictions. The direction is the same in each account: yields are rising quickly at the long end of the curve.

Why yields are climbing

Several pressures appear to be converging at once.

Inflation is back in focus. Refining capacity knocked offline by the Iran conflict has lifted energy prices. That has pushed consumer inflation to 3.4% and September inflation expectations to 4.6%. 1 Traders are watching these signals closely, and the 10-year's push past 5.15% was attributed to stronger inflation pressures. 2

The Fed is tightening. On September 16, the Federal Open Market Committee raised its benchmark rate to a range of 3.75% to 4% and signaled more tightening ahead. 1 Markets are now pricing rising odds of another hike at the October meeting. 2 For readers following the Fed's rate decisions, this is the key detail. The bond market is not waiting for the central bank. It is already building in further increases.

Supply is overwhelming demand. A projected $1.9 trillion federal deficit and roughly $489 billion in AI-related tech borrowing have arrived just as buyer demand has weakened. 1 The AI figure stands out. The infrastructure buildout behind artificial intelligence is being funded heavily with debt, and that debt competes with Treasuries for investors' money.

Pressure is global. Bond selloffs in Japan, Britain and France have also pulled U.S. yields higher. 1 This suggests that part of the move reflects worldwide repricing of long-dated debt, not only American conditions.

The household hit: mortgages near 7.5%

Long-term Treasury yields serve as a benchmark for consumer lending, so the effects reach households quickly. The selloff lifted the average 30-year fixed mortgage rate from 7.30% to 7.49%. 1 A jump of that size raises monthly payments for new buyers and gives existing owners another reason not to sell and refinance at higher rates. Housing activity is likely to stay constrained for as long as yields remain elevated.

Wall Street shrugs, for now

The stock market's reaction has been notably calm. On October 5, as yields hit their 2002-era peak, the Nasdaq Composite set new intraday and closing records. 3 The Nasdaq gained 1.1%, the S&P 500 rose 0.7% and the Dow added 0.2%. 3 Nvidia, the world's most valuable public company, rose more than 2% to a second straight record. The Roundhill Magnificent Seven ETF advanced more than 1%, after all seven mega-cap tech names gained to close the prior week. 3

This is the central tension in the story. The AI trade that is lifting equity indexes is also one of the borrowing sources adding supply to credit markets. 13 In effect, investors are rewarding AI spending in stocks while the debt that pays for it helps push up the cost of capital for everyone else.

Reading the moment

My reading is that this is mainly an inflation-and-supply story, with the Fed confirming the trend rather than causing it. Energy-driven price pressure gives the FOMC little room to ease. Record deficits and a wave of AI debt issuance mean the market has to absorb more bonds at the same time the central bank is tightening. Global selloffs remove the usual cushion of foreign demand for U.S. debt.

Equities can ignore rising yields for a while, especially when earnings growth is concentrated in a few AI leaders. Above 5%, however, the 10-year begins to compete seriously with stocks for capital. It also raises borrowing costs for the very companies issuing that AI debt. If the Fed follows through with an October hike, as markets increasingly expect, the gap between record stock prices and multi-decade-high yields will be tested.