SK Hynix's US NAND subsidiary Solidigm plans to go public, but its 4484% debt ratio is a major issue

Solidigm, the US NAND subsidiary of SK Hynix, is exploring a path to list in the US, but the heavy debt burden and aging production infrastructure cast uncertainty over the outlook for this plan.

According to The Chosun Ilbo, SK Hynix is planning a Pre-IPO financing round for Solidigm worth between 5 trillion and 10 trillion Korean won and is seeking investment intentions from global alternative asset managers and sovereign wealth funds, with Morgan Stanley and Goldman Sachs reportedly being potential lead underwriters. At the same time, Solidigm is said to have begun recruiting executives responsible for SEC filings and external financial disclosures, further reinforcing market expectations for its Nasdaq listing plan.

SK Hynix subsequently released a clarifying statement saying that Solidigm is evaluating various strategies to enhance competitiveness but that there are currently no detailed plans confirmed. The company stated it will provide an update in accordance with disclosure requirements by September 4. This listing exploration coincides with a period of surging high-capacity storage demand driven by AI infrastructure and inference workloads, providing Solidigm with a favorable market window.

AI Storage Demand Provides Market Opportunity for Listing

Solidigm’s IPO preparations are occurring against the backdrop of a rebound in the NAND market. According to TrendForce, SK Hynix Group (including SK Hynix and Solidigm) recorded NAND revenue of approximately $7.53 billion in the first quarter of 2026, up 44.6% quarter-on-quarter, with a global market share of 17.6%, ranking second after Samsung (31.6%).

On the product side, Solidigm has taken the lead in launching 122TB-class QLC enterprise SSDs, becoming the world's first company to unveil such a product, and is currently developing a next-generation enterprise SSD with a capacity of up to 245TB. According to The Korea Economic Daily, this product can store approximately 50,000 movies and mainly targets the large-scale storage needs of AI data centers.

SK Hynix acquired Intel’s NAND flash memory and SSD business for around 10 trillion Korean won in 2020 and established Solidigm in the US in 2021 to manage these assets. If successful, a Nasdaq listing would continue SK Hynix's capital market expansion strategy, which began with its US listing via American Depositary Receipts (ADR) on July 10 this year.

High Debt Levels and Ongoing Financial Risks

However, behind Solidigm’s recent business recovery, its financial foundation remains fragile. According to The Chosun Ilbo, the company accumulated nearly 8 trillion Korean won in net losses between 2021 and 2023, and in the first half of 2024, shareholders’ equity fell to minus 906 billion Korean won, resulting in a state of full capital erosion.

Though Solidigm returned to profitability for FY2024 and emerged from the capital impairment situation, its financial pressures remain unresolved. Reports indicate that its debt-to-equity ratio reached 4,484.6% last year, about 14 times the typically considered healthy threshold (below 200%), so the company’s financial stability is still questioned by the market.

Such a high level of indebtedness not only curbs valuation potential but also directly impacts Solidigm’s fundraising ability and pricing attractiveness in both the Pre-IPO and IPO phases, causing potential investors to maintain cautious views on its balance sheet sustainability.

Aging Wafer Fabs Hinder Technology Upgrades

Aside from financial stress, aging production infrastructure is also a core bottleneck. Solidigm’s wafer fab in Dalian, China, is its only overseas production base, and due to US export controls, it cannot bring in advanced tools such as EUV, which has led to repeated delays in planned upgrades and expansions.

According to a News Tomato report in July, Solidigm plans to restart long-stalled expansion work at Dalian Fab 2 in the second half of 2026, with expected new V8 lines based on 238-layer NAND technology. Meanwhile, Fab 1 in Dalian has begun transitioning lines to 192-layer NAND and is updating equipment to replace outdated facilities.

If these upgrades can proceed smoothly, they will help to enhance Solidigm’s technology competitiveness and production capacity. However, capital expenditure pressures and uncertainties from export controls remain unresolved variables, which investors need to consider when assessing its listing value.

IPO Significance: A Key Step in SK Hynix’s US Strategy

For SK Hynix, driving Solidigm toward an independent IPO is not just about fundraising. Listing Solidigm independently on Nasdaq means SK Hynix could strategically separate the NAND business from its core DRAM and HBM businesses at the capital level, spreading risk exposure. At the same time, leveraging US capital market liquidity will enable Solidigm to fund technical iteration and capacity expansion.

This move fits into SK Hynix’s overall strategy to deepen its US presence—following its ADR listing, a successful Nasdaq listing for Solidigm would establish a dual-track approach between parent and subsidiary in the US capital markets, further strengthening SK Hynix’s strategic depth in the global storage market.

Currently, Solidigm’s IPO timetable has not been finalized. SK Hynix has pledged to disclose the latest progress no later than September 4, at which point the market will receive a clearer signal.