The selloff that has rattled technology stocks this autumn returned on Sept. 24, and it started, as it usually does, in the bond market rather than the stock market.
U.S. Treasuries fell again, pushing the yield on the benchmark 10-year note back above 5 percent. Higher yields make future earnings worth less today, and the companies most exposed to that arithmetic, the chip makers whose profits sit years in the future, were the first to slide. Nvidia, AMD, Intel and Broadcom all traded lower in premarket action, and oil rose alongside, adding to the pressure on an economy that burns energy to build data centers.
The 5 percent threshold carries weight because it marks the upper end of a range the market has tested and retreated from. The 10-year yield last crossed that line in October 2023, its highest level since 2007, before easing back. Each approach has been treated by investors as a signal that borrowing costs are climbing to a point where bonds compete with stocks for capital.
The October 2023 episode showed how quickly the mood can turn. When the yield briefly topped 5 percent that month, the S&P 500 slumped and the most richly valued corners of the market took the worst of it before the yield retreated and stocks recovered. Traders have since used 5 percent as a line in the sand, and its recrossing this week revived the same playbook: sell the names priced for the future, buy the cash flow of the present.
The chip decline did not happen in a vacuum. Oracle had disclosed the same week that it issued a force-majeure notice to the developer of its New Mexico AI data center, and the news dragged the wider cloud and computing complex with it. Snowflake slipped modestly, while CoreWeave, a company whose entire business is renting out AI computing, held roughly flat. The pattern suggested investors were sorting through which AI names could absorb higher rates and which could not.
The deeper question behind the selloff is how the artificial-intelligence buildout is being financed. The five largest U.S. cloud providers are on pace to spend $4.2 trillion on capital expenditures over the four years through 2029, according to FactSet, and a growing share of that money is coming from bond issuance rather than cash flow. SoftBank, which is channeling tens of billions of dollars into OpenAI, confirmed this week that it raised $11.1 billion in what LSEG data showed was the largest high-yield corporate bond sale on record. A 5 percent 10-year yield raises the cost of that entire project.
The concentration of the AI trade makes the arithmetic starker. A handful of companies, Nvidia above all, have absorbed much of the capital flowing into artificial intelligence, and their share prices rest on the assumption that hyperscale spending keeps compounding. If borrowing costs stay elevated, that assumption gets harder to finance. SoftBank’s record bond sale was widely read less as a sign of confidence than as evidence that the biggest AI bets are now being carried on borrowed money.
Analysts said the mechanics are straightforward. When yields rise, the discount rate applied to distant cash flows rises with them, and chip stocks, valued for a decade of AI-driven growth, are among the most sensitive to the change. The semiconductor group had already been under pressure, and the move in Treasuries gave investors a reason to trim further.
The rotation visible in premarket trading told its own story. While chip stocks fell, energy names gained on the rise in oil, and investors moved toward assets that pay out now rather than later. That dynamic, selling duration and buying yield, is exactly what a 5 percent 10-year rate tends to produce, analysts said.
The question now is whether the bond market is pricing a one-off repricing or a sustained shift. The selloff in Treasuries has come as the Federal Reserve holds rates in a range meant to keep inflation in check while the government runs large deficits, both of which can keep yields elevated. Oil’s climb added to the inflationary impulse that bond investors watch most closely.
Because the chip makers carry so much weight in the broad indexes, their decline dragged the wider market even for investors who own no technology stock. A 5 percent Treasury yield does its damage not by shutting down the AI buildout but by changing what the market will pay to own it, and the adjustment has to happen somewhere first.
For the chip sector, the immediate test is whether demand for AI chips is strong enough to outweigh the headwind from financing costs. Earnings over the coming weeks will offer the first real read. None of this means the AI boom has stalled: chip orders remain strong, and the companies building data centers continue to sign contracts. But the cost of the boom is no longer a detail buried in a footnote. It shows up in the bond market every day, and when the 10-year yield clears 5 percent, the stock market has to take the bill into account.
