SK Hynix Storms Nasdaq in the Largest ADR Debut Ever
2 min readThe company that makes the memory inside nearly every AI accelerator just staged one of the biggest entrances in Wall Street history. On July 10, South Korea’s SK Hynix listed American depositary receipts on Nasdaq under the ticker SKHY, raising roughly $26.5 billion in what is set to be the largest ADR debut ever.
The AI Memory Giant
SK Hynix is the world’s leading maker of high-bandwidth memory, or HBM, the ultra-fast stacked DRAM that sits next to Nvidia’s chips and feeds them data fast enough to keep pace. The company controls roughly 60 percent of the HBM market, the largest share of any supplier, and that product is effectively sold out well into 2027.
The numbers behind the listing are staggering. In the first quarter of 2026 SK Hynix reported revenue near 52.6 trillion won, its first quarter above 50 trillion won and up close to 200 percent year over year, with operating margins reported above 70 percent.
What Happened
According to CNBC, the chipmaker priced 177.9 million ADRs at $149 each. Demand was intense, and the offering was oversubscribed by more than seven times. Proceeds are earmarked for concrete capacity, including Phase 1 of the Yongin semiconductor cluster, an advanced-packaging plant in Cheongju, and EUV lithography equipment, all aimed at producing more HBM.
Why It Matters
The listing gives global investors the cleanest large-cap way to own the AI memory boom, and it tests a bigger question: whether the AI infrastructure buildout can keep going public at this scale. Memory, long treated as a commodity that swung with boom-and-bust cycles, has become a strategic chokepoint. Whoever supplies HBM sets the pace for everyone training and running large models.
For the rest of the industry, SK Hynix’s war chest means more supply is coming, but not overnight. With HBM booked out for years, the listing is less about relief today and more about who funds the next wave of AI capacity. Rivals Samsung and Micron will feel the pressure.