Memory and storage equities sold off on September 28 following renewed reporting that SK Hynix was considering a U.S. public offering for Solidigm, its data-storage subsidiary. In the early trading snapshot provided by 24/7 Wall St., SK Hynix was down approximately 6% at $180.31. Micron and Western Digital each fell roughly 4%, while SanDisk declined around 5%. These are prices at the article's publication time, not closing prices.
The broader Roundhill Memory ETF was down approximately 5% in the same snapshot, compared with a 1.5% decline in the Invesco QQQ Trust. That difference illustrates how a market shock centered on memory and storage can affect sector-focused holdings more than a diversified large-cap technology benchmark. The source notes that, as of May 11, Samsung Electronics, SK Hynix and Micron accounted for reported weights of 25%, 24.2% and 23.8%, respectively, in the memory fund. Those historical weights should not be assumed to be its current portfolio allocation.
Bloomberg reported that Solidigm could seek a public valuation of up to $100 billion in a listing as soon as the following year. SK Hynix had not announced a final decision. The report renewed debate over the potential advantages of establishing a standalone market price for the NAND and enterprise-storage business, versus the dilution and governance implications of bringing outside shareholders into another level of the group structure.
The Korea Corporate Governance Forum had previously urged SK Hynix to abandon the plan, according to the article. Critics argue that a separately listed subsidiary could complicate the ownership chain and reduce the parent's future economic share of the business. Another perspective is that a public listing could provide financing for expansion and make the value of Solidigm easier to assess independently from SK Hynix's high-bandwidth-memory operations. Final offer terms would be necessary to evaluate those competing considerations.
Selling was not restricted to companies with direct NAND exposure. Western Digital primarily supplies hard-disk storage, while SanDisk is a closer publicly traded reference for flash memory. The article also identifies broader oil-related risk aversion as a concurrent influence, so it would be premature to attribute every move in the group to the potential IPO alone.
Micron's scheduled earnings release later in the week provides an additional event for the sector. Investors can monitor formal Solidigm disclosures, any clarification of the prospective ownership structure and Micron's results to determine whether this episode reflects company-specific news, wider memory-market expectations or both.