Nvidia Stock Gets $81.6M ARK Buy as Anthropic Details $84.5B Compute Plan

• Nvidia stock drew an estimated $81.6 million purchase from Cathie Wood’s ARK Invest, which also sold about $110.5 million in AMD shares
• Anthropic disclosed up to $84.5 billion in Nvidia-powered compute spending through 2029, with most agreements cancelable on 90 days’ notice
• Nvidia and AMD are reportedly lobbying to soften proposed restrictions on advanced chip exports to China

Cathie Wood bought more Nvidia stock on Tuesday, even as her funds sold a larger stake in AMD. ARK’s $81.6 million purchase coincided with fresh details of Anthropic’s spending plans, including billions for access to Nvidia-powered computers. The chipmaker has plenty of demand to point to. Keeping customers in China is another matter, and Nvidia and AMD are now seeking help from the White House to push back against proposed export restrictions.

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ARK Buys Nvidia Stock While Trimming AMD

ARK Invest bought 356,681 Nvidia shares across its ARKK, ARKQ, ARKW and ARKX funds on September 29. The estimated purchase value was $81.63 million.

The funds also sold 181,767 AMD shares, valued at approximately $110.5 million. Those figures show a change in exposure between the chipmakers, although the trades alone do not establish Wood’s reasoning or signal that ARK has abandoned AMD.

For ARK Invest, the Nvidia purchase adds exposure to a company whose hardware underpins large-scale AI infrastructure. Anthropic’s newly reported agreements offer a solid example of the spending involved, with contract terms that need attention along with the headline number.

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Anthropic’s Compute Spending Comes With Exit Clauses

Anthropic disclosed agreements with xAI, owned by SpaceX. This could involve up to $84.5 billion in payments for Nvidia-based computing capacity through 2029, citing a confidential IPO prospectus.

Most of those agreements can be canceled with 90 days’ notice. The amount therefore describes potential spending on computing services, rather than confirmed revenue for Nvidia.

The disclosure gives investors more detail about Anthropic’s infrastructure needs. It also shows why large spending announcements require careful reading. The supplier receiving payment, the hardware powering the service, and the company ultimately booking chip revenue occupy different positions in the arrangement.

Nvidia’s overseas business faces a separate uncertainty. Nvidia and AMD have reportedly asked the Trump administration to help soften proposed China chip restrictions being considered for the annual defense bill. The proposals include tighter export oversight and requirements to track certain advanced chips.

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