SK Hynix Just Killed a $15 Billion IPO

The short answer: SK hynix has put the planned U.S. IPO of its NAND flash unit Solidigm on hold. The deal had been reported at up to $15 billion, valuing Solidigm at around $150 billion, but South Korean regulators warned it could undermine shareholder interests — and when the plan was shelved on Friday, SK hynix shares closed 4.4% higher.

What happened

On Friday, October 23, in Seoul, SK hynix said Solidigm had discontinued its review of pre-IPO fundraising and an initial public offering, after considering overall capital market conditions. Solidigm is the former Intel NAND flash memory and solid-state drive business, which SK hynix acquired in 2021 and owns in full through its U.S. holding company.

The listing had been under consideration to help fund a new U.S. factory and meet surging demand for chips used in AI data centres. According to Reuters, it could also have funded share cancellations and buybacks. People familiar with the now-suspended plans told Reuters the share sale could have raised $15 billion and valued the unit at $150 billion — figures that would have made it one of the largest chip listings ever attempted.

SK hynix stressed that the pause is about financing, not about the business itself. "This decision does not reflect any change in Solidigm's growth prospects or investment needs," the company said, adding that it will keep exploring ways to fund Solidigm's expansion, including reviewing the timing, scale and financing of future investments.

Why it's blowing up

Three things turned a financing delay into a weekend headline. First, the size: a reported $150 billion valuation for a subsidiary is enormous, even in the AI chip boom. Second, the reversal was fast — Aju Press notes the disclosure came just 79 days after the IPO preparations were first revealed on August 5. Third, investors cheered the cancellation: SK hynix shares finished Friday 4.4% higher, outperforming a flat broader market, as dilution worries abated, according to Reuters. Stocktwits reported Solidigm had tapped Goldman Sachs and Morgan Stanley to lead a debut planned for next year.

Why regulators stepped in

The retreat came just a day after Financial Services Commission Chairman Lee Eog-weon told a parliamentary audit that a separate U.S. listing of Solidigm would fall under South Korea's rules governing listings of subsidiaries of publicly traded companies. Asked whether he agreed the plan counted as a parent-subsidiary listing, Lee replied: "Yes. It is subject to the guidelines."

Aju Press reports those rules impose five obligations on parent companies — assessing shareholder impact, devising protections, consulting investors, a board decision and disclosure — and they apply even when a subsidiary lists overseas. Shareholder opposition had also intensified, amid concern a standalone listing would deepen the discount on SK hynix's remaining stake. Dow Jones Newswires, via Morningstar, added the review was discontinued "in light of market conditions and share price trends."

Key facts

Company: Solidigm, SK hynix's U.S. NAND flash and SSD subsidiary, formerly Intel's NAND business (acquired 2021).
Reported deal size: up to $15 billion raised, at a reported valuation of around $150 billion (people familiar with the plans, via Reuters).
Status: pre-IPO fundraising and IPO review discontinued as of October 23, 2026.
Market reaction: SK hynix shares closed 4.4% higher in Seoul on Friday.
Stated reason: capital market conditions and share price trends, following regulatory and shareholder pushback.

What's next

SK hynix says it will keep exploring funding for Solidigm's expansion, so a listing at a different time or scale is not ruled out — but there is no live IPO timetable. Reuters also reports it is unclear how Washington will receive the decision, as the Trump administration has pressed foreign chipmakers to build in the U.S. What is confirmed is simpler: one of the biggest planned chip IPOs is off the table, and Seoul's shareholders are, for now, relieved.

This post reports market news only and is not financial advice.

FAQ

What is Solidigm?

Solidigm is SK hynix's U.S. subsidiary specialising in NAND flash memory and solid-state drives. It was created from Intel's NAND and SSD business, which SK hynix acquired in 2021, and SK hynix owns 100% of it.

How big was the Solidigm IPO supposed to be?

People familiar with the suspended plans told Reuters the sale could have raised about $15 billion and valued Solidigm at around $150 billion. The deal was never priced, and those figures were reported estimates, not official terms.

Why did SK hynix stock rise when the IPO was cancelled?

Reuters reported the 4.4% Friday gain came as worries abated that a separate Solidigm listing would dilute SK hynix shareholders' interests and deepen the discount on its remaining stake.

Is the Solidigm IPO dead for good?

Not necessarily. SK hynix discontinued the current review, but said it will keep exploring ways to fund Solidigm's expansion, including reviewing the timing, scale and financing of future investments.

SK Hynix Just Killed a $15 Billion IPO — and Its Stock Went Up