Chip Bear Market Deepens as China AI Model Rattles Sector

Wall Street’s chip index has officially entered bear market territory, and a Chinese startup’s new model is the latest catalyst. The selloff is raising pointed questions about whether AI infrastructure spending can justify the valuations built up over the past two years.

Key points

• The Philadelphia Semiconductor Index has fallen more than 20% from its June peak, crossing the technical threshold for a bear market.
• A new AI model from China’s Moonshot AI, combined with persistent concerns about the scale of AI capital expenditure, triggered a broad selloff across global tech stocks.
• SoftBank fell 8% as the U.S. semiconductor rout spread to Asian markets; TSMC’s forward outlook failed to reassure investors.
• Apple has overtaken Nvidia as the world’s most valuable company, with Apple’s market cap reaching $4.88 trillion amid the chip sector’s slide.
• Meta and Anthropic are in talks on a potential $10 billion compute lease deal, a sign that hyperscaler AI spending continues even as markets wobble.

What is driving the semiconductor selloff?

The proximate trigger is Moonshot AI’s release of a new, reportedly powerful model out of China. That follows a pattern investors have seen before: a Chinese model release prompts a reassessment of how much compute Western AI firms actually need, and chip stocks take the hit. The Economic Times notes that heavy AI spending concerns compounded the reaction.

There is also a structural debate playing out. A Seeking Alpha analysis of Nvidia published Friday argues that the AI stack itself is shifting: CUDA faces growing competition from rival chip architectures, HBM memory supply is becoming a constraint, and data-center power capacity is emerging as a hard limit on AI buildout. None of these are new worries, but they are gaining more traction as the sector corrects.

Friday did bring some relief. Chip stocks trimmed losses as dip buyers stepped in, suggesting the market is not in full panic mode. But trimming a loss is not the same as reversing a trend, and the 20%-plus drawdown from June highs is a fact on the record now.

Does the bull case for Nvidia still hold?

Nvidia bulls are not going quietly. A piece published Friday on Yahoo Finance argues that the China narrative bears rely on has been dismantled by successive earnings reports, and that each sell-off on that thesis has been a buying opportunity. The argument is familiar: Nvidia’s data-center revenue keeps compounding, export restrictions have not cratered results the way critics predicted, and demand from U.S. hyperscalers remains strong.

The counter-pressure is real, though. Apple reclaiming the top spot in global market cap at $4.88 trillion is partly a reflection of Nvidia’s own decline rather than a pure Apple surge. And the reported delay of Nvidia’s GeForce RTX 50 Super GPU launch adds a minor consumer-side overhang, even if the data-center business is what actually moves the stock.

Where is the money still moving?

Despite the macro selloff, deal flow in AI infrastructure has not stopped. The Meta-Anthropic compute lease talks, reported at a potential $10 billion, are notable on two levels. First, the scale confirms that frontier AI labs still require enormous third-party compute resources. Second, it would give Meta a new revenue stream by leasing capacity rather than consuming it all internally. No deal has been confirmed, and the source cited is unnamed, so this warrants caution.

Separately, Tower Semiconductor’s $3 billion expansion into Japan continues to draw attention as a play on specialty chip manufacturing capacity. Tower is not an AI-pure-play, but its move underscores that semiconductor investment outside the Nvidia-TSMC axis is still very much happening.

The macro backdrop is not helping sentiment either. U.S. strikes in Iran pushed WTI crude toward $82 a barrel on July 17, adding geopolitical uncertainty to an already jittery tape. Risk-off moves in energy and tech can reinforce each other, and that dynamic appears to be in play this week.

The core question for AI investors right now is whether this is a sentiment-driven correction in a structurally intact cycle, or the beginning of a broader reset in AI capital allocation. The data on actual spending, from sources like the reported Meta-Anthropic deal, still lean toward the former. Markets, for the moment, are voting the other way.

This article is for informational purposes only and does not constitute investment advice.