SK Hynix closed the bookbuild for its $28 billion ADR offering on Wednesday, July 8, 2026, after the deal was oversubscribed, according to a source cited by Reuters. Final pricing was expected Thursday, July 9. Trading on Nasdaq is set to begin July 10.

The offering, as launched, consists of 17.79 million new shares packaged into American Depositary Receipts, with each ADR representing one-tenth of a common share — a 10:1 ratio Reuters. That structure puts the launched deal size at $28 billion, down from the up-to-$29.4 billion figure the company had floated when it first disclosed the plan on June 24 Reuters. Either figure would put this among the largest equity listings ever brought to a U.S. exchange.

The paper trail behind the deal runs back further than the June headline. SK Hynix made a confidential filing in March 2026 signaling intent to list in the U.S. in the second half of the year Reuters. The public registration statement — a Form F-1 under the Securities Act of 1933 — followed on June 24, filed with the SEC under CIK 0002120882 SEC EDGAR. A companion Form F-6, covering the ADRs themselves as evidenced by depositary receipts, was filed alongside it. Amendment No. 1 to the F-1 followed, standard procedure as underwriters and counsel finalize pricing mechanics and risk disclosures ahead of a roadshow close. SK Hynix has said the offering will be made only by means of a prospectus, the boilerplate disclaimer required whenever a company references a pending registered offering publicly SK Hynix IR.

Fee economics on the deal drew separate attention in early July. Bloomberg News reported, and Reuters relayed, that SK Hynix was weighing a payout of roughly 0.5% of gross proceeds to the banks running the offering Reuters. On a $28 billion deal, that arithmetic implies underwriting fees in the neighborhood of $140 million — thin by the standards of a typical U.S. IPO, where gross spreads of 3-7% are common on offerings a fraction of this size, but not unusual for a large secondary-market ADR listing from an already-public foreign issuer where much of the book is anchored by existing institutional holders and strategic demand rather than built from scratch.

That fee structure is worth sitting with for a moment. SK Hynix is not raising primary capital in the conventional IPO sense — it is already listed and heavily traded in Seoul. What's happening here is a cross-listing designed to give U.S.-based institutional and index-tracking capital direct access to the stock without the friction of trading on the Korea Exchange, and to plant SK Hynix inside the American market's AI and semiconductor narrative alongside names like Nvidia, Micron and TSMC's ADR. A 0.5% fee on a deal this size reflects a book that filled itself largely through existing relationships and secular demand for high-bandwidth memory exposure, not one where syndicate desks had to work hard to manufacture orders.

The oversubscription itself is the more immediately relevant data point for anyone pricing the open on July 10. A bookbuild closing early, ahead of the scheduled window, combined with demand exceeding the share count on offer, is the standard signal of a deal priced to leave room on the table — underwriters and issuers alike tend to prefer a modest first-day pop to a stock that opens underwater, since the latter complicates future follow-on issuance and damages relationships with the anchor accounts who bought the deal. Whether SK Hynix priced at the top of an indicated range, or above it, will only be confirmed with Thursday's final terms, which fall outside the window of this reporting.

The bigger context is memory pricing and AI capital expenditure. SK Hynix has spent the past two years as one of the primary beneficiaries of hyperscaler spending on high-bandwidth memory for AI accelerators, alongside Samsung and Micron. A U.S. listing gives American funds — many constrained by mandates that limit or complicate direct foreign-exchange holdings — a dollar-denominated, Nasdaq-listed instrument to express that exposure. For a deal of this size to clear as an oversubscribed secondary listing, rather than requiring a discount to attract demand, tells you something about how U.S. institutional money is currently positioned toward AI-adjacent semiconductor supply chains. It says less, on its own, about where HBM pricing or capacity utilization goes from here — that remains a separate and unresolved question that Thursday's pricing print won't answer.