Micron fell 17% and Cramer says the AI sell-off isn't done yet

Micron fell 17%, GE Vernova dropped 7% and Sandisk plunged 22% on Thursday — and CNBC's Jim Cramer says the AI sell-off probably isn't finished. The "Mad Money" host made the call in his Thursday broadcast, one day after the same three stocks were, in his words, "crushed" in Wednesday's session.

The trigger is political, not technical. Cramer pointed to growing opposition to new data centers following the midterm elections. That opposition has raised doubts about future AI infrastructure spending. And when spending expectations move, the stocks tied to that buildout move harder. Investors who assumed the rapid pace of data center construction would continue indefinitely had pushed AI-linked shares to levels the market is now repricing — fast.

The stakes here are real. AI infrastructure has been the single largest driver of market gains over the past two years, and the semiconductor names at the center of that trade are now testing whether their valuations can survive a policy turn. What Cramer offered Thursday was an attempt to answer the question every holder of these stocks is asking: is this 2000 all over again?

What did Cramer actually say?

His core message came in two parts. First, the decline likely has further to run. Second, it isn't a repeat of the dot-com crash.

"I wish I could say that today's flush was the bottom," Cramer said. He stopped short of calling it one, cautioning that more downside may lie ahead for the sector.

But he drew a hard line between today's AI companies and the speculative businesses that collapsed during the dot-com bust. His reasoning, delivered on air, was blunt:

"But I look at the charts, and there still seems like there's no support for so many Tech stocks, especially the semis, because they ran so much on the way up. However it might feel, it's actually an orderly decline because unlike 2000, these are mostly lucrative companies with stocks that went too high."

That distinction carries the whole argument. In Cramer's framing, the problem is price, not business quality. The companies themselves, he argued, are mostly profitable. The stocks simply got ahead of what the fundamentals justified, and the market is now correcting that gap.

Which stocks got hit hardest?

Thursday's damage was concentrated in the names most exposed to the AI data center buildout:

• Micron: down 17% on Thursday, after also falling sharply Wednesday
• Sandisk: down 22% on Thursday, with the same double-day pattern
• GE Vernova: down 7% on Thursday, likewise hit in the prior session

All three were, in Cramer's words, "crushed" in Wednesday's session as well. The back-to-back declines underscore how quickly sentiment around AI infrastructure has shifted since the midterm elections amplified local opposition to new data center projects.

Where is the real risk, according to Cramer?

Not in the big chipmakers. Cramer's chief worry sits with the smaller AI developers — he named CoreWeave, Iren and Nebius — that borrowed money to finance projects which could now face regulatory delays.

"That's what I am chiefly worried about," he said. "That's the real problem. That's what could really hurt the stock market. ... Right now, no one of significance is defaulting on their debt. The only issue with the debt is that it's connected to those neocloud companies that I mentioned. That's not enough to sink us."

The nuance matters. Cramer isn't predicting systemic damage from AI-linked debt — at least not yet. His read is that the borrowings are concentrated in the so-called neocloud operators, and that no major player is currently defaulting. The exposure exists. In his judgment, it doesn't threaten the broader market on its own.

That's the question of scale embedded in his comments: whether regulatory delays hit only the leveraged fringe of the AI buildout, or whether they choke the pipeline for the whole ecosystem, from memory chips to power equipment.

Why does Cramer prefer a fast crash to a slow bleed?

Perhaps the most striking line of the broadcast was his preference for speed over gradualism. Cramer suggested that a swift sell-off could help the market work off the excesses of the AI boom more effectively than a prolonged downturn.

"I for one am glad they are ripping the Band-Aid off this market rather than slowing trying to take it off a little bit each day," he said.

The logic is mechanical. A fast repricing resets expectations quickly and lets buyers step in against a cleared deck. A slow grind, by contrast, keeps uncertainty hanging over every earnings report and every data center permit fight for months. For a market that ran up as hard as the semis did, Cramer's view is that the correction is healthier the faster it happens.

What should investors do?

Cramer's advice was concrete: hold sufficient cash. Cash, in his framing, is what separates clear-headed decisions from panic selling at the bottom or complacent holding at the top.

He paired that warning with reasons for optimism. He cited falling interest rates, signs of easing inflation and the possibility of an end to the Iran war as factors working in the market's favor even as semiconductor stocks could face further declines.

His closing words to investors were a case for preparation over reaction:

"If you have cash you won't panic," Cramer concluded. "You won't be complacent, either. You will be clear-headed and that's how you will lose less money until things get better. They always do."

Why this matters beyond one broadcaster's call

Cramer's segment lands at a moment when the AI trade's central assumption — that data center construction grows indefinitely — is facing its first serious political test. Midterm election results have energized opposition to new data centers, and the stocks most leveraged to that construction pipeline are absorbing the repricing first. Micron's 17% single-day drop and Sandisk's 22% plunge show how little support exists under names that ran hardest on the way up.

The debate Cramer entered is the one that will define the next stretch of this market: whether AI infrastructure spending bends or breaks. His answer Thursday was a bend — painful, disorderly in feel but orderly in fact, concentrated in leveraged neocloud players rather than profitable incumbents. If the debt stays contained and rate cuts keep coming, his read is that this flush becomes the reset the market needed. If regulatory delays spread from the CoreWeaves and Nebiuses of the world to the major builders, that thesis gets its first real test.