SK Hynix raised $26.51 billion through an American depositary receipt offering and began trading on Nasdaq on July 10 under the ticker SKHY, the largest first-time US listing by a foreign company on record, according to The Wall Street Journal. The ADRs priced at $149 apiece, opened around $170, and finished the first session up roughly 13 percent, per Bloomberg.
That number beats the previous benchmark for a foreign issuer’s US debut, Alibaba’s $25 billion NYSE listing in 2014. A Korean memory maker now holds the record, and it got there by selling the one thing US investors cannot buy enough of: direct exposure to high bandwidth memory.
What actually happened (and what did not)
Precision matters here, because the headline framing on social media (“biggest IPO ever”) is wrong on both words. This was not an IPO in the conventional sense: SK Hynix has been a public company for decades, and its primary listing stays on the Korea Exchange under code 000660. What listed on Nasdaq is a secondary line of American depositary shares. And the $26.5 billion is not a market-debut valuation: it is fresh capital raised by selling new ADSs to US investors.
The deal had been telegraphed for weeks. Reuters reported in early June that the company told investors the US listing plan had strong backing, and CNBC reported on June 24 that SK Hynix was targeting as much as $29 billion with a debut as soon as July 10. The final deal came in below that ceiling but still comfortably above Alibaba’s record, with demand reportedly running around seven times the shares on offer.
The numbers
The tape tells a clean story. Pricing at $149, an open near $170, a first-day gain of about 13 percent. The sympathy trade was immediate: Micron, the closest US-listed pure play on the same memory cycle, rose about 4.5 percent on the day, a notable reaction given that the new listing is arguably direct competition for the same investor dollars.
The less flattering number came from Seoul. SK Hynix’s Korea-listed shares fell more than 15 percent in the next session, per CNBC, as local investors digested the dilution from the new shares and the valuation gap between the exuberantly priced ADRs and the home listing. A record US raise and a double-digit home-market selloff are the same event viewed from two directions.
The signal
Why would US investors hand a Korean chipmaker $26.5 billion at a premium? Because SK Hynix sits at the choke point of the AI buildout. It leads the market in high bandwidth memory, the stacked DRAM that feeds Nvidia-class accelerators, and memory supply is one of the two binding constraints on how fast AI infrastructure can grow, a dynamic we mapped in our look at memory and megawatts as the caps on the 2026 buildout. Owning the HBM leader directly, in dollars, on a US exchange, is the trade this cycle has been asking for.
It also confirms where the capital is. Samsung told the same story from the earnings side with its blowout Q2 guidance: memory pricing power is real and the order books are full. And the sheer size of the raise says something about US equity appetite for AI paper that private AI labs weighing their own listings will have noticed, a dynamic we track in our IPO watch. When a secondary listing of a 40-year-old memory company clears $26.5 billion at seven times demand, the window is wide open.
What to watch
Now the caveats. The record framing flatters the deal: comparing a secondary raise by a long-public company to Alibaba’s actual IPO is apples to oranges, even if the dollar figure is real. The Seoul selloff is the honest counterweight, and the spread between the ADR line and the Korean line will show whether US investors overpaid or Korean investors overreacted. The Micron reaction figure comes from secondary market coverage rather than a primary wire, so treat the precise percentage loosely.
The bigger risk is timing. Memory is the most cyclical business in semiconductors, and companies tend to raise their largest sums nearest the top. SK Hynix just banked $26.5 billion at peak AI enthusiasm, which is either superb treasury management or the cleanest top signal this cycle has produced. Watch where the proceeds go: if they flow into HBM and DRAM capacity that lands in 2028, the supply picture that justifies today’s pricing starts to erode. The raise was the easy part.
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