Chad Smith
AI chipmaker stocks dropped sharply on Tuesday, pulling major indexes lower and reigniting questions about the sustainability of artificial intelligence investment. Micron and Sandisk each fell more than 10%, while Nvidia, the world's most valuable company, slipped about 3%.
At a Glance
- Micron and Sandisk shares dropped more than 10% on Tuesday afternoon
- Nvidia fell roughly 3%, despite being up about 8% for the year
- The Nasdaq declined 1.4%; the S&P 500 fell nearly 1%
- South Korea's KOSPI index plunged close to 10%, amplifying the global mood
- Futures markets put the odds of a September interest rate hike at around 50%
What Triggered the Selloff
Some analysts pointed to profit taking as the immediate cause. After months of extraordinary gains, traders locked in returns by selling positions, creating a cascade of downward pressure across the sector. The slide was not contained to the United States: South Korea's benchmark KOSPI index plummeted nearly 10%, amplifying nerves across global markets.
The backdrop matters. Futures markets tracked by CME Group's FedWatch Tool now price the odds of an interest rate hike in September at roughly 50%, a figure that has climbed since Fed Chair Kevin Warsh signaled a firm commitment to fighting inflation at his first meeting leading the central bank. Higher rates raise the cost of borrowing, which matters greatly for a technology that requires enormous capital spending to develop and operate.
"The capital being spent on AI is enormous. What's the cost of capital? It doesn't look like it's getting any cheaper in the near term," said Mike Loukas, CEO of TrueMark Investments.
Context: The Gains That Preceded the Drop
Tuesday's losses look less alarming when measured against the year to date. Micron has gained 277% in 2025. Sandisk has climbed a staggering 735% over the same stretch. Nvidia, now valued at roughly 4.8 trillion dollars and the world's largest company by market capitalization, is still up about 8% for the year despite Tuesday's dip.
"I don't think this is unreasonable, given how much of a run we've seen," said Bret Kenwell, an investing analyst at eToro. Steve Sosnick, chief strategist at Interactive Brokers, framed it plainly: "Today is a downdraft, not a crash."
Still, Sosnick added that it is fair to question whether the return on investment across the AI sector is truly sustainable at the current pace of spending.
The Deeper Question About AI Returns
The selloff arrives as scrutiny of AI's financial performance sharpens. A study from MIT found that roughly 95% of businesses that invested in AI had so far failed to generate profit from the technology. The combined investment by those businesses was estimated at around 40 billion dollars.
Critics argue the costs are so high that AI must deliver outsized profits within years, not decades, because the current spending levels cannot be maintained indefinitely. So far, concrete evidence that businesses or consumers will pay enough to justify those expenditures remains limited.
How Analysts Read the Moment
Opinions within the analyst community vary considerably. Dan Ives, managing director of equity research at Wedbush, told clients Tuesday that markets will keep cycling through what he called "gut-check moments" in the technology trade, and that the AI story is still only in the third inning. He characterized the morning's decline as one of those periodic tests rather than a turning point.
Others see a modest but real shift in mood, with optimism beginning to cool after a long stretch of euphoria. Whether the turbulence is a brief pause or the start of something more sustained depends largely on what interest rates do next and whether AI companies begin translating investment into measurable profit.
Frequently Asked Questions
Why did AI chip stocks fall so sharply on Tuesday?
Analysts cited a combination of profit taking after an extended price run, rising expectations for a September interest rate hike, and broader unease about whether massive AI spending will produce returns that justify the cost.
Is this drop a sign that the AI boom is ending?
Most analysts described the decline as a correction within an ongoing rally rather than a reversal. Micron, Sandisk, and Nvidia all remain significantly higher than their prices at the start of 2025.
How do interest rates affect AI companies?
Higher interest rates increase the cost of borrowing, making it more expensive for companies to finance the data centers, chips, and infrastructure that AI development requires. That puts pressure on projected returns.
What did the MIT study find about AI profitability?
The study found that approximately 95% of businesses that had invested in AI had not yet made money from the technology, with the combined investment across those firms totaling around 40 billion dollars.
What Comes Next for the Sector
The September Federal Reserve meeting looms as the next major pressure point. If rates rise, the financing math for AI gets harder. If chipmakers begin reporting stronger profit figures tied directly to AI demand, confidence could rebound quickly. For now, Tuesday's drop is a reminder that even the most spectacular rallies include moments when the market stops to ask whether the math actually works.
