China’s Rare Earth Squeeze Is Quietly Throttling the AI Chip Boom

US shipments of yttrium — a rare earth element critical to advanced semiconductor manufacturing — have collapsed roughly 95%, from 333 tons to just 17 tons, in the eight months following Beijing’s April 2025 export controls. China controls approximately 90% of global rare earth processing capacity, and industry executives now warn of potential production halts before the end of 2026 if the bottleneck isn’t resolved.

The Scale of the Chokepoint

China’s dominance isn’t primarily about mining rare earths — it’s about processing them into usable industrial form, a capability the country has spent decades building and that has no scalable near-term substitute elsewhere. Beijing’s October 9, 2025 export control expansion put yttrium, scandium, dysprosium, terbium and other elements under an opaque licensing regime that determines who receives shipments and when (TFTC).

The May 2026 US-China trade truce produced only a vague commitment to “address concerns” about rare earth shortages, with no binding timeline, no removal of specific controls, and no verification mechanism — leaving the underlying bottleneck largely unresolved months later (TFTC).

Why Yttrium and Scandium Specifically Matter

These are not obscure materials to the AI hardware story — they are load-bearing:

• Photonic chips rely on indium phosphide as a substrate material with no currently scalable commercial substitute, and one manufacturer holds roughly 40% of the global market for indium phosphide optical components (Discovery Alert).
• Scandium has become increasingly important in certain deposition processes used in leading-edge semiconductor fabrication, and shortages have already created measurable impacts on chip manufacturing yield (Discovery Alert).
• If a pending “Wave 2” suspension of controls expires without renewal, five additional rare earth elements would return to full restriction simultaneously — a compounding shock for industries that haven’t yet secured alternative sources, leaving manufacturers with a planning horizon of less than six months, according to critical minerals analysis (Discovery Alert).

A Sophisticated Form of Leverage

The October 2025 expansion marked what analysts describe as a qualitative shift: by extending restrictions to cover not just the raw materials but processing equipment, technical documentation, and accumulated operational refining knowledge, Beijing effectively weaponized decades of processing expertise as a strategic asset — targeting capabilities rather than simply commodities (Discovery Alert).

China escalated the response further in June 2026, blocking dual-use exports to ten US companies, including two rare earth producers whose output feeds directly into the US semiconductor and AI hardware production chain (Cryptopolitan). Researchers at the Center for Strategic and International Studies have warned that the pattern risks triggering “an export control and economic statecraft arms race” that could undermine global security and economic prosperity (Cryptopolitan).

The Market Is Already Repricing This

Domestic Chinese markets have responded aggressively: since the start of 2026, rare earth concept stocks on China’s A-share market have surged, with Grinm Advanced Materials up 200% and Oulai New Materials up as much as 350%, reflecting a market-led revaluation of who captures profit across the global semiconductor supply chain (BigGo Finance). The report notes that the combined annual net profit of 177 A-share semiconductor companies has historically been less than one-twentieth of a single US chipmaker’s profits — a gap Beijing’s rare earth leverage is explicitly aimed at closing.

The US Regulatory Backdrop

Washington’s own January 2026 export control rule tightened restrictions on advanced AI chips destined for China, introducing new total processing power thresholds and shifting licensing for chips like Nvidia’s H200 and AMD’s MI325X from presumptive denial to case-by-case review, subject to a 25% tariff, a 50% volume cap relative to domestic shipments, and mandatory US-based third-party testing (Informed Clearly). China’s rare earth controls function as the direct retaliatory counterpart to this regime.

Key Takeaways

• US yttrium shipments from China fell roughly 95% following Beijing’s April 2025 export controls, with prices up about 60% since.
• China controls approximately 90% of global rare earth processing capacity, giving it leverage that goes well beyond raw material supply.
• A pending expiration of “Wave 2” control suspensions could add five more restricted elements simultaneously, with manufacturers facing under six months of planning certainty.
• Chinese domestic rare earth stocks have surged as markets price in a structural shift in global semiconductor supply chain economics.