This morning SK Hynix did something that would have been unthinkable a month ago: it scrapped the Nasdaq IPO of Solidigm, its U.S. flash-memory unit, that analysts believed could value the company at up to $150 billion. The stock market's reaction, according to Aju Press: a 4.4% rally.

The decision ended SK Hynix's review of a pre-IPO funding round and a listing for the California-based NAND subsidiary — a deal that had been gathering real momentum. Reuters reported in late September that Solidigm was weighing a listing as early as 2027 that could raise as much as $15 billion, the largest semiconductor IPO in U.S. history; Bloomberg followed in early October saying Goldman Sachs and Morgan Stanley had been picked to lead an offering of about $10 billion. SK Hynix cited "market conditions and share price trends," adding that the decision "does not reflect any change in Solidigm's growth prospects or investment needs."

The irony is that Solidigm was arguably the best-positioned chip IPO of the AI era. Born from Intel's $9 billion NAND and SSD business, the company makes the high-capacity enterprise drives — including its flagship 122TB eSSD — that AI data centers are devouring. Yet its own shareholders treated the listing as a liability: a separate float, they argued, would dilute their claim on Solidigm's earnings and deepen the discount the market applies to SK group holding structures. Seoul's regulators agreed — Korea's top financial regulator told lawmakers the plan fell under the agency's split-listing guidelines. As Barron's put it: "It's a funny old market."

The timing is the tell. The announcement landed hours after the Nasdaq's steepest drop since June, triggered by Meta disclosing roughly $825 billion in future spending commitments that revived doubts about AI payback. The Philadelphia Semiconductor Index lost 6.7% in a day. And Solidigm isn't the only listing casualty: the Wall Street Journal notes that Australian data-center operator Firmus Grid canceled its IPO earlier this month and Blackstone-backed AirTrunk pushed a Singapore listing to next year. The AI hardware IPO window is narrowing in real time.

What to watch: Solidigm still needs money for the new U.S. fab it says is required to meet AI memory demand — with no IPO proceeds, that bill lands on SK Hynix's balance sheet instead. The company reports third-quarter results on October 28, where funding plans are now the main event. And the bellwether is Anthropic, expected to file its IPO as early as today: if the lab famous for selling the AI story gets cold feet at the public markets, the Solidigm retreat will look less like a one-off — and more like the signal.

— via Aju Press