Reading: Stock Market Bubble sell-off tests AI stocks, but fundamentals still matter

Stock Market Bubble sell-off tests AI stocks, but fundamentals still matter

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The market got torched, blown up and shredded to pieces in the aftermath of the blue wave, but the deeper message from the sell-off is that companies are still being judged on what they can actually earn. That is why the latest drop in AI-linked names has not been treated as proof that the story is over.

Investors in AI are now searching for a clean answer to a messy question: how much of the future was simply priced too aggressively? This week, AMD did not offer a huge 2027 outlook on its earnings call, while Hilton CEO Chris Nassetta felt compelled to share directional guidance for 2027 with investors. On Sozzi Unleashed, he said the political system has been built pretty well, that the system is resilient, and that he does not see any real dramatic impact over the next two or three years from the last couple days. His point was not that nothing changed. It was that the market may have changed faster than the businesses underneath it.

That matters because the sell-off is being framed as a repricing of the AI ecosystem, not a destruction of it. The fundamentals of companies have not been destroyed this week to the extent that would justify some of the selling, and the world did not end. Elon Musk's SpaceX is still operational this weekend, and Musk is still on pace to churn out Tesla robotaxis and robots in large numbers in 2027. AMD CEO Lisa Su said the demand she is seeing is off the charts. In other words, the underlying business appetite has not vanished just because stock prices have.

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The friction is that the market is starting to question the numbers that had been carrying the bull case. Earnings estimates for 2027 and 2028 can no longer be believed in the way investors once treated them, and that is forcing a harder look at data center economics. Those projects will not come to a screeching halt in the United States, but they will face a higher bar to get built and it will be costlier to get the deals done. Higher costs usually mean more expensive power, more expensive construction and more expensive equipment, which is why a stock market bubble debate is now spilling into the companies that build the backbone of the AI boom.

If the selling persists, the surprise may not stay confined to Nvidia, Micron and Sandisk. It could spread to industrial suppliers tied to the build-out, including Caterpillar and its dump trucks. For now, this looks less like the end of the trade than the start of an adjustment period, one in which historically cheap valuations may finally matter again.

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