SK Hynix’s $28 Billion NASDAQ Bet Comes Just as Its AI Memory Lead Faces a Test

Nvidia is the most valuable company in the world, worth about $4.7 trillion and narrowly ahead of Apple and Alphabet. Yet the chipmaker cannot build its most advanced AI systems at scale without a South Korean firm so deeply in debt in 2002 that it negotiated the sale of its memory business to Micron Technology, only for the deal to collapse at the last minute.

Back then it was called Hynix Semiconductor. Creditors took control after the failed Micron deal, and for years, the company stood as a warning to the industry. Expand too aggressively during a boom, and the debt remains long after the cycle turns and the demand has gone. Hynix was rescued in 2012 by the SK Group, one of South Korea’s largest conglomerates, spanning energy, telecoms and semiconductors. Many analysts doubted the deal at the time, but it has since become one of the group’s best bets.

Renamed SK Hynix, it has briefly overtaken Samsung Electronics as South Korea’s most valuable listed company, crossed a $1 trillion market value and is about to trade on NASDAQ, the exchange where Micron trades.

The listing takes the form of American depositary shares, or ADS — the individual units investors can buy. Collectively, this kind of listing is known as an American depositary receipt, or ADR, listing. In simple terms, it allows investors to buy a US-traded security linked to a foreign company without directly buying its home-market stock. In such cases, every 10 depositary shares represent one common share.

Hynix will sell 177.9 million of these depositary shares, representing 17.79 million new common shares. Trading is expected to begin on July 10 under the ticker SKHY, with the offering aimed at raising about $28.1 billion.

If you have not heard of SK Hynix, you may have heard what it makes.

The Chip the AI Boom Cannot Do Without

The world’s most demanding AI systems increasingly run on graphics processors. Those processors, in turn, depend on a specialised memory chip called high-bandwidth memory, or HBM. SK Hynix controls about 58% of the global HBM market by revenue, according to Counterpoint Research.

To see why that matters, start with the memory itself. A company like SK Hynix makes three broad things. DRAM, or dynamic random access memory, is the fast, short-term working memory a computer uses while it is running, the chips that let a laptop or server juggle many tasks at once. NAND flash memory is storage that holds files even when the power is off, as in a phone or a solid-state drive. HBM is a premium form of DRAM built for AI. Instead of placing memory chips farther from the processor, it stacks them vertically and puts them close to the AI chip, allowing data to move faster over a shorter distance.

That distinction is the whole story. Commodity DRAM is relatively interchangeable. One supplier’s chip is much like another’s; competition grinds prices down, and the business runs in brutal boom-and-bust cycles. HBM has been different. How fast it feeds data helps decide whether an AI model runs at scale or stalls. It cannot be easily swapped between suppliers, and matching the yields Nvidia demands takes years of process engineering. SK Hynix got there first, and the lead held.

Nvidia has made that dependence hard to miss. On June 2, 2026, its chief executive Jensen Huang visited SK Hynix’s booth at Computex in Taipei and wrote “Please Make More” on an HBM4E wafer on display, according to UPI and Asia Business Daily. It was part theatre, part supply-chain signal. A customer rarely asks a supplier for more capacity in public unless the bottleneck is real.

Five days later, Nvidia and SK Hynix announced a multi-year technology partnership to advance next-generation memory for AI factories, tying SK Hynix more closely to Nvidia’s AI infrastructure roadmap.

The financial result has been extraordinary. In the first quarter of 2026 (January-March), SK Hynix reported revenue of ₩52.6 trillion, up 198% from a year earlier. Its operating profit reached ₩37.6 trillion, giving it an operating margin of 72%, higher than that of almost any large industrial company. Its Seoul-listed shares have more than tripled over the past year, lifting its market value above $1 trillion. The ‘won’ (₩) is South Korea’s currency, trading this week at around 1,525 to the US dollar, making the revenue roughly $34.5 billion, while its operating profit stood at about $24.7 billion.

And yet, until this week, many of the world’s largest investors had no easy way to access the stock on U.S. exchanges. That is what makes its NASDAQ listing more than a technical change in where the shares trade. It gives global investors a direct route into one of the most lucrative chokepoints in the AI supply chain.

The Discount That Would Not Close

For years, Micron has traded at a premium to SK Hynix despite thinner margins, a smaller slice of the HBM market and a weaker position in Nvidia’s AI supply chain. In market terms, that means investors have been willing to pay more for each dollar of Micron’s expected earnings than for each dollar of SK Hynix’s.

SK Hynix has long been the cheaper one, not because it earned less than Micron, but because it was harder for many global investors to own directly. Micron trades on the NASDAQ, which is included in the trading systems and indices that many U.S. funds use by default. Owning SK Hynix meant trading in Seoul, managing Korean market access or relying on less liquid offshore instruments.

Applied to South Korean companies as a group, that markdown has a name. It is called the Korea Discount, a structural haircut tied to concerns about access, governance and shareholder returns rather than fundamentals alone. The NASDAQ ADR listing is built to test whether part of that gap can be closed.

That is the bull case. Seoul-based Eugene Asset Management and London-based Jupiter Asset Management have projected about 30% upside for Seoul-listed SK Hynix shares if the ADR listing helps narrow the valuation gap with Micron. Ha SeokKeun, Eugene’s chief investment officer, put his own base case at 30% for the Korea-listed shares and about 45% for the ADR. HSBC analysts have treated the listing as a positive catalyst, citing improved accessibility for global investors.

By early July, the gap had already begun to narrow on its own. SK Hynix was trading at about 6.2 times estimated earnings over the next 12 months, compared with roughly 7 times for Micron, after Micron’s multiple compressed during a 14% weekly fall in its shares, according to Fortune.

The catch is what the bull case leaves out.

The Lead Is Being Tested as Hynix Lists in the US

The rise from near-death to dominance is a familiar business story. What makes SK Hynix unusual is where it sits on NASDAQ right now: near the top, just as the single condition that put it there is becoming harder to sustain.

Start with what the 72% margin represents. It is the reward for a market where supply is scarce, customers are desperate, and only a handful of companies can meet the specification. Through earlier generations of HBM, the competitive question was blunt: could you make the product reliably at all? For years, SK Hynix answered that question better than anyone else.

Samsung struggled with yields and Nvidia’s heat and power requirements. Micron was a smaller presence. That is why one company could hold a majority of the HBM market and earn margins no memory maker would normally expect. Memory is supposed to be a commodity business where competition grinds prices down.

Two things are now changing. The first is that Samsung has stopped looking like a permanent laggard. On June 5, Nvidia‘s chief executive, Jensen Huang, confirmed that Samsung, SK Hynix and Micron had all passed certification and entered production of HBM4 for supply to the Vera Rubin platform. It is the first time in HBM’s history that a new generation has begun with all three suppliers qualified. The second is that Micron is no longer a marginal HBM supplier. Counterpoint’s Q1 2026 data put Samsung and Micron at 21% each of the HBM market by revenue.

The technology reset matters. HBM4 is one of the biggest architectural jumps in the product’s short history, doubling the width of the interface that carries data. It effectively reopened the qualifying round, and this time all three major memory makers came through it. The next generation looks less like a one-company race and more like a three-way contest.

Hold those two moments together. On June 2, Huang publicly urged SK Hynix to make more. Three days later, he confirmed Nvidia had certified its two rivals for the same next-generation platform. The same customer that proves how badly the world needs SK Hynix is also the one that just widened the field around it.

The precedent for how quickly memory economics turn is set by SK Hynix itself. In 2023, it posted an annual operating loss of ₩7.73 trillion, roughly $5 billion, after pandemic-era over-ordering met collapsing demand. The same business, two years before those record margins, was deep in the red.

SK Hynix’s Memory Cycle Swing

Year	Operating Result	Phase
2023	Operating loss of ₩7.73 trillion	Post-pandemic glut
2024	Operating margin of 35%	Early AI-memory recovery
2025	Operating margin of 49%	HBM-led rebound
Q1 2026 (Jan-Mar)	Operating margin of 72%	AI-memory supercycle

Sources: SK Hynix annual and quarterly financial results; Reuters for Q1 2026

SK Hynix’s swing from a multi-billion-dollar loss to a record margin in three years shows how violently memory economics move.

None of this is a forecast of collapse. It is something investors can watch in real numbers: Samsung back in the HBM conversation, Micron gaining share, Nvidia broadening supply and SK Hynix issuing stock while margins are at a high-water mark. There is also a genuine counter-argument. HBM qualification hurdles and its tight bond to specific AI chips create switching costs ordinary memory never had, while long-term supply agreements give SK Hynix more visibility than memory makers usually enjoy.

But the mechanism that ends memory cycles has not been repealed. It tends to be least visible precisely when everyone is most sure this time is different.

The Bigger Migration

Pull back from the single company and a regional pattern appears. SK Hynix is not listing in New York because it could not raise money at home. It is listing partly to push its valuation closer to global AI hardware peers, and to broaden access to investors who find NASDAQ easier than Seoul.

It is the largest name yet in a wider drift of Asian semiconductor champions towards the US and offshore markets in search of deeper capital and richer multiples. This week, Taiwan’s Unimicron sought about $1.4 billion through a global depositary share sale, while Japan’s Kioxia has said it plans to offer US depositary receipts in spring 2027.

Asian Tech Companies Tapping Offshore Markets 

Company	Home Market	Offshore Listing	Approx. Size	Status
SK Hynix	South Korea	NASDAQ ADR listing	About $28.1 billion	Trading expected on July 10, 2026
Unimicron	Taiwan	Luxembourg global depositary share listing	About $1.4 billion	Seeking to raise
Kioxia	Japan	US depositary shares	Not yet set	Planned
Alibaba	China	NYSE ADR listing	$21.8 billion	Listed in 2014

Sources: Reuters for SK Hynix and Unimicron; Bloomberg/Barron’s for Kioxia; Alibaba filings and Reuters for Alibaba

For the exchanges these companies call home, that is a quiet problem. Samsung and SK Hynix account for an unusually large share of Korea’s benchmark KOSPI, making the index heavily exposed to one cyclical corner of the AI supply chain. Separately, Korean regulators have moved to tighten rules around split or duplicate listings of subsidiaries, an issue often cited in debates over the Korea Discount. Those rules are not a direct response to SK Hynix’s ADR listing, but they show how sensitive Seoul has become to listings that can dilute or divert value away from domestic shareholders.

The Tell in the Order Book

One detail rewards a close read. About a quarter of the deal, or up to $7 billion, has received indications of interest from three cornerstone investors — Baillie Gifford, the Scottish asset manager; Coatue Management, the US tech-focussed investment firm; and Situational Awareness Partners, the AI-focussed hedge fund founded by former OpenAI researcher Leopold Aschenbrenner. Their interest is an endorsement of the AI memory thesis. However, it also complicates the simple story that the listing is only about passive money finally discovering a locked-away stock.

These are not index funds forced to buy. They are active investors adding exposure after a historic rally. That makes the order book less a mechanical access story and more a direct test of whether global investors believe SK Hynix has become a strategic AI infrastructure company rather than just another cyclical memory maker.

What July 10 Really Tests

Each depositary share is priced as a fraction of a Seoul share, with 10 depositary shares representing one common share. When trading opens, the number to watch is not simply whether SKHY jumps on Day 1. The question is whether the US-listed shares can sustain a durable premium, and whether the Seoul-listed shares also re-rate.

A sustained premium would suggest the listing unlocked demand that could not easily reach the stock before. Parity, or a discount, would suggest the Korea Discount was never only about access.

The stock has already shown how tightly the AI trade is wound around it. South Korea’s market has become unusually dependent on Samsung and SK Hynix, and recent chip-led selloffs have shown how quickly gains can reverse when investors question the durability of AI spending, memory pricing or leverage in the trade.

For years, SK Hynix looked like the world’s best memory business, yet remained difficult for many global investors to buy. From July 10, they can. That access arrives just as the lead that made the company worth buying faces its most serious test. Whether the discount narrows cleanly, or whether lifting it reveals a company being crowned at the exact moment its rivals are let back in, is the question the rest of 2026 will answer.

A note on figures: This story is based on SK Hynix’s SEC prospectus and market data current to July 7, 2026. Some details may move before or on the listing date. The final depositary share price and precise dollar size of the raise will be set only after the book closes; the roughly $28.1 billion figure is based on the ₩43.14 trillion offering and remains subject to fluctuations in the won-dollar exchange rate.

Trading is expected to begin on July 10, but the company describes that date in its filing as tentative and subject to change. The HBM market share and valuation multiple figures are the most recent published estimates from Counterpoint Research and Bloomberg, respectively.