SK hynix has abandoned plans for an IPO of Solidigm and confirmed Solidigm will build a 3D NAND fab in the U.S.

SK hynix announced early on Friday that it has decided to abandon plans for a potential initial public offering (IPO) of Solidigm, its U.S.-based enterprise SSD subsidiary. The company cited unfavorable stock market conditions and semiconductor share price trends. At the same time, SK hynix confirmed that it plans to build a new fab for Solidigm in the U.S. to meet growing demand for enterprise SSDs. Although an IPO could have helped finance a U.S. fab, SK hynix says the subsidiary's expansion remains a priority.

Solidigm specializes in high-capacity data center SSDs based on floating gate 3D QLC NAND memory. As AI infrastructure deployments accelerate, demand for high-capacity storage is rising, while Solidigm's existing manufacturing capacity is barely sufficient for its projected needs. SK hynix therefore believes Solidigm requires additional production facilities in the U.S. The company has not yet disclosed the planned fab's capacity, investment requirements, or construction schedule. The facility could also strengthen SK hynix's American manufacturing footprint, which is important given the current environment and on-shoring trends.

SK hynix had considered several options to finance the capacity expansion, including direct investment, a pre-IPO funding round, and an IPO of Solidigm. An IPO would have allowed SK hynix to raise capital from outside investors without taking on more debt. It could also have revealed the true value of the subsidiary, which SK hynix believes is not properly reflected in its own market capitalization. In addition to funding the expansion, the proceeds could have been used for dividends, share repurchases, and share cancellations.

However, SK hynix says that increased market volatility and the ongoing correction in semiconductor stocks have made an IPO less attractive. The company believes current market conditions would prevent Solidigm from achieving a valuation that adequately reflects its growth prospects. As a result, it has discontinued its review of both pre-IPO financing and an IPO, though it will continue to evaluate alternative funding mechanisms.

The decision raises an obvious question: why abandon a financing route that could provide billions of dollars for Solidigm's expansion just as demand for enterprise SSDs is at a record high and set to keep rising over the next couple of years? Constructing a modern 3D NAND fab requires tens of billions of dollars, and external financing could ease the burden on SK hynix's balance sheet and preserve capital for other projects, such as new capacity elsewhere.

One possible explanation is Solidigm's exceptionally strong profitability. Micron's enterprise storage division recently reported a non-GAAP gross margin of 90%. Given Solidigm's position in the market, where it controls 21.1% of the enterprise SSD market together with its parent company, its margins may be higher still, as it sells exclusive products. If such margins are sustainable over the next two or three years, Solidigm could substantially boost SK hynix's consolidated profitability and generate considerable cash for future investments. SK hynix could therefore potentially finance Solidigm's U.S. manufacturing expansion through a combination of internally generated cash and debt, without diluting its ownership. Funding the entire project with cash alone may also be possible, although that would be less likely given the massive capital requirements of advanced semiconductor production facilities. In any case, it is natural for SK hynix to prefer retaining full ownership of a highly profitable subsidiary rather than selling a stake at a valuation it considers inadequate.