SpaceX, AMD, and Solidigm IPO: AI Stocks Sept. 26

This update is a roundup of same-day reporting from the linked sources below, with editorial context from the CPJ Stock Desk.

Meta and Microsoft helped lift tech stocks last week despite pressure from rising bond yields, while several fresh chip and AI stories landed over the weekend that deserve investor attention.

Key points

SK Hynix’s Solidigm unit is exploring an IPO that could value it at up to $150 billion, with the company targeting roughly $15 billion in proceeds.
Elon Musk’s xAI is planning to more than double the Nvidia chip count in its Colossus 2 cluster, sustaining strong demand signals for Nvidia hardware.
Mizuho maintained a Buy on SpaceX with a $200 price target, citing a new $1.11 billion monthly computing deal and the company’s ability to hold elevated pricing.
Bank of America raised its AMD price target, but Wall Street Zen simultaneously downgraded AMD to Hold, reflecting divided analyst opinion on the stock.
Palantir co-founder Joe Lonsdale called AI regulation pushes by OpenAI and Anthropic “dangerous”, arguing they are designed to entrench market power rather than protect the public.
DensityAI, a chip startup founded by former Tesla Dojo executives, is in advanced talks to raise funding at a $1 billion valuation.

Could the Solidigm IPO reshape the AI memory market?

SK Hynix’s Solidigm unit specializes in NAND flash memory and solid-state drives, two product categories that sit at the infrastructure layer of AI workloads. Sources tell the Economic Times that planning is still in early stages, but the numbers being floated are large: a $150 billion valuation would make this one of the biggest semiconductor IPOs in U.S. history. The company is also reportedly weighing a new manufacturing facility in upstate New York.

For AI investors, the significance here goes beyond a single listing. If Solidigm successfully prices at that range, it would signal that public markets are willing to assign substantial premiums to AI storage infrastructure, not only to GPU designers. That’s a data point worth watching as the IPO calendar for 2027 starts to take shape.

SpaceX and xAI keep piling into Nvidia

The demand story around Nvidia continues to build from the private market side. According to Gurufocus reporting, Musk has indicated that xAI’s Colossus 2 cluster could more than double its current Nvidia chip count. Colossus was already one of the largest GPU clusters in operation when it launched, so a doubling would represent a significant incremental order.

Separately, Mizuho’s coverage of SpaceX points to a new $1.11 billion monthly computing capacity deal and argues the company is positioned to maintain elevated pricing for that capacity as AI infrastructure build-outs continue. The JPMorgan JEPQ ETF also added SpaceX and Microsoft positions on September 23, with net buying of $37.1 million in that session, a sign of growing institutional appetite for SpaceX exposure through available vehicles.

AMD gets a split verdict from analysts

AMD rose 0.5% on Friday after Bank of America lifted its price target, citing a more favorable semiconductor outlook. But the same day, Wall Street Zen moved in the opposite direction, cutting AMD from Buy to Hold. BMO Capital Markets also recently initiated or updated coverage, adding to a crowded analyst tape.

The divergence reflects genuine uncertainty about AMD’s near-term positioning. The company competes directly with Nvidia in AI accelerators but has not yet closed the gap in software ecosystem depth. Investors watching AMD should weigh the Bank of America optimism against the Hold downgrades and note that the stock’s reaction to Friday’s positive call was modest, just half a percent.

The AI regulation debate heats up

Joe Lonsdale, who co-founded Palantir and is also an investor in Anthropic, used pointed language this week to describe regulation advocacy from leading AI labs. Speaking publicly, he argued that OpenAI and Anthropic are “weaponising fear” about existential AI risk to push for rules that would benefit incumbents and lock out competitors, calling the dynamic a “dangerous” bid for oligopoly.

The comments are notable partly because Lonsdale is himself an Anthropic backer, making this criticism from inside the ecosystem rather than from outside it. For investors, the regulatory debate matters directly: heavy AI regulation could entrench current market leaders, raise compliance costs for smaller players, and affect which companies are best positioned in a more regulated environment. This argument is likely to intensify as legislative activity around AI picks up in both the U.S. and Europe.

Nothing on this site constitutes investment advice. This update is for informational purposes only.