Two major stories dominated markets this week: China's aggressive push for open AI models and a brutal selloff in US chip stocks that dragged global tech shares lower. Both developments have significant implications for investors watching the AI trade.
China's AI Diplomacy: Open Models for Global Influence
China's president made his first-ever appearance at the country's flagship AI conference in Shanghai this week, a clear signal of how central artificial intelligence has become to Beijing's national agenda. The president pitched a vision of "AI for all" — provided the AI is made in China.
China committed to providing 5,000 AI training courses in developing nations over the next five years, and its new World AI Cooperation Organization now counts 29 signatories. Notably absent from the speech was any mention of fresh government investment in domestic AI or chip companies, sending Chinese AI and chip stocks lower.
This marks a strategic role reversal. For decades, the US championed open internet and open-source software, while China operated behind its Great Firewall. Now, China is offering its AI models as freely downloadable digital public goods, while the US increasingly guards its frontier models through export controls, security regulations, and closed platforms.
By making models easy to download and ultra-cheap, China aims to win over developers worldwide — and undercut America's AI ambitions. Chinese models now account for over 60% of global traffic on AI marketplace OpenRouter, outpacing US rivals. Even American companies like Airbnb, Pinterest, and DoorDash are exploring Chinese models, and Microsoft is reportedly considering using DeepSeek for its Copilot Cowork AI assistant.
The cost difference is stark: Anthropic's Claude Fable 5 costs more than 100 times as much per standard task as DeepSeek's V4 Flash. That kind of gap threatens the premium pricing that companies like Anthropic and OpenAI need to support the trillion-dollar valuations they're chasing.
For more on this shift, see our earlier coverage: China's Xi Unveils Global AI Alliance as Beijing Pushes Open Models to Counter US Dominance.
US Chip Stocks Suffer One of Their Worst Weeks in Over a Year
American chip stocks just suffered one of their worst weeks in more than a year, and global tech stocks followed them lower. The Philadelphia Semiconductor Index, which tracks major US chip companies, fell roughly 8.5% this week. It briefly dipped into bear market territory — a drop of 20% from its June peak — before recovering slightly.
The hardest-hit stocks were some of the biggest AI-related winners this year. Semiconductor designer Marvell and memory maker Sandisk are now down more than 30% this month. Investors have long worried that the AI spending spree boosting chipmakers' sales can't last forever. With chipmakers increasing capacity to meet demand, fears of weaker pricing and oversupply spooked the market.
Those same fears hammered AI-related stocks in Japan and South Korea. A local selloff turned into a feedback loop that intensified the hit to US chipmakers. In South Korea, the tech-heavy Kospi index plummeted, triggering margin calls for over 1.2 million retail investor accounts. At least 300,000 accounts were fully liquidated, forcing selling that deepened the plunge and sparked a rush for the exits on global tech stocks.
This is a classic example of momentum investing gone wrong. When stocks are rising, investors keep buying, expecting the rally to continue. The problem arises when too many investors hold the same position. It works on the way up, but if everyone tries to exit at once, the resulting selloff can be brutal — especially for those using borrowed funds. Leverage can juice gains but accelerate losses, leading to margin calls where brokers demand more cash or forcibly close trades.
For more context on the chip selloff, read: AI Chip Stocks Tumble as Leveraged Bets Unwind, Index Down 9% This Week and US Chip Stocks Plunge Into Bear Market Territory as AI Darlings Suffer Steep Losses.
What It Means for Investors
These two stories are connected. China's push for cheap, open AI models threatens the pricing power of US AI leaders, while the chip selloff reflects growing doubts about whether the massive spending on AI infrastructure will pay off. For everyday investors, the key takeaway is that the AI trade — which has driven much of the market's gains over the past year — is showing signs of strain.
Diversification remains important. The selloff in chips and tech stocks has not spread equally to all sectors. Energy stocks, for example, have rallied on rising oil prices, as noted in TSX Dips 0.2% as AI Enthusiasm Fades, Energy Stocks Rally on Oil Surge. Investors should watch for further volatility in tech and consider how their portfolios are positioned relative to the AI theme.
No one can predict whether the chip selloff will deepen or whether China's open model strategy will succeed. But understanding the dynamics at play — from margin calls in Seoul to AI pricing wars in Shanghai — can help investors make more informed decisions.
