Shares of SK Hynix slid -4.2% to €1,130 after reports surfaced that its U.S. storage subsidiary is exploring a blockbuster public listing, reigniting fears that the South Korean chipmaker's layered corporate structure could shortchange investors in its home stock.

  • A $9 Billion Bet Could Become a $150 Billion IPO — Solidigm is considering an initial public offering as early as next year that could value the U.S. subsidiary at up to $150 billion.

Solidigm held pitch meetings this week with investment banks in a competitive "bake-off," and could raise $15 billion in the IPO — a valuation that would far exceed recent semiconductor IPOs, including Arm Holdings' roughly $54 billion debut and Cerebras Systems' approximately $56 billion listing.

SK Hynix created the unit in 2021 after acquiring Intel's NAND business for about $9 billion , meaning the asset has appreciated roughly 16-fold on paper.

  • Investors Fear a "Grandchild Company" Problem — The Korea Corporate Governance Forum has argued that a U.S. listing could deepen the group's pyramid ownership structure; SK Hynix owns the NAND business through a U.S. subsidiary known as AI Company, making Solidigm a "grandchild company." In plain terms, that means profits must travel through multiple corporate layers before reaching SK Hynix shareholders. If a portion of profits from the NAND business flows to new Solidigm investors as dividends, the economic share that SK Hynix shareholders indirectly enjoy could shrink.

SK Hynix shares plunged 10.37% last month, the day after Solidigm's listing potential was first reported.

  • The Money Story: Capital vs. Control — The prospective $15 billion in IPO proceeds would give SK Hynix substantial financial flexibility to support multi-year capital deployment, including its M15X facility and Yongin semiconductor cluster expansion. But spinning off a stake reduces SK Hynix's direct claim on Solidigm's cash flows during industry upturns — precisely when the NAND storage business is booming on AI-driven data-center demand. SK Hynix reported record Q2 2026 results, with consolidated revenue of KRW 79.32 trillion and an operating profit of KRW 60.54 trillion — a 76% operating margin.

  • Broader Headwinds Compound the Drop — Rising bond yields and AI-safety jitters pressured chip stocks sector-wide, amplifying the company-specific selloff. The primary risk is valuation sustainability: Solidigm's growth is tightly linked to hyperscale AI spending, and if memory demand normalizes from peak levels, sustaining a $150 billion valuation could prove challenging.

The bottom line: SK Hynix turned a $9 billion Intel deal into a potential $150 billion asset, but how it monetizes that gain — and how much of it actually flows back to shareholders — is the question now hanging over the stock.