Chip stocks post their worst day since April 2025 as China fears spread

Chip stocks had their worst day since April 2025. On July 28, 2026, Bloomberg’s gauge of semiconductor shares slumped 7.5%, with Korean chipmakers hit hardest in an Asia-wide selloff.

Three fears at once

Selloffs this sharp rarely have a single cause. This one had three running together:

• Signs of real progress in China’s advanced chipmaking, threatening the lead of US and Korean players
• Growing fear of “circular financing” in AI: Nvidia acting as lender, supplier, investor and partner across the same infrastructure deals
• Doubts that record AI capex will ever translate into matching revenue

Each fear feeds the others. If China closes the manufacturing gap, the scarcity premium on Western chips shrinks. If the AI buildout is partly funded by circular deals, reported demand may overstate real demand. And if capex never converts to revenue, the spending that justified chip valuations becomes a liability instead of a growth story.

The worst possible week for a selloff

The timing amplifies everything. The rout landed at the start of a loaded week: Big Tech earnings from Apple, Microsoft, Meta and Amazon, plus a Fed meeting, all with markets already on edge about AI spending.

That calendar means every earnings call this week doubles as a referendum on AI capex. Any hint of slowing infrastructure spending from the hyperscalers would validate the market’s doubts; any acceleration would raise the circular financing question louder.

Correction or something bigger

The honest answer is that a single day cannot settle it. A 7.5% drop after a long AI-driven run can be a healthy repricing of stretched valuations, or the first crack in a structure that depends on spending continuing forever.

What makes this episode worth remembering is the cause list. The market did not sell off on a bad earnings report or a macro shock. It sold off on doubts about the AI trade’s own internal logic. That is a different kind of fear, and it does not disappear when the next quarter beats estimates.