Future TechnologySK Hynix just pulled off the biggest foreign IPO in US history
Key takeaways
- SK Hynix raised 26.5 billion dollars, the largest US listing ever by a foreign company and the second biggest US share sale of all time, behind only SpaceX.
- It sold 177.9 million ADRs at 149 dollars each under the ticker SKHY, and the stock jumped nearly 13 percent on day one.
- SK Hynix makes the high-bandwidth memory next to almost every Nvidia AI chip and controls roughly 60 percent of that market.
- The cash funds a new Korean fab, a packaging plant, and EUV machines, all aimed at the AI-driven memory shortage.
SK Hynix just listed on the Nasdaq and raised 26.5 billion dollars, making the SK Hynix IPO the largest US listing ever by a foreign company. It is also the second biggest US share sale of all time, behind only SpaceX last month. The company sold 177.9 million American depositary receipts at 149 dollars each under the ticker SKHY, and the stock climbed nearly 13 percent on day one.
If the name does not ring a bell, the product will. SK Hynix makes high-bandwidth memory, the stacked chips that sit right next to an AI processor and feed it data fast enough to keep it busy. Almost every Nvidia AI accelerator has SK Hynix memory bolted to it, and the company controls roughly 60 percent of that market by revenue.
Why the memory maker matters more than the model
A top-end GPU starved of data just sits there waiting. High-bandwidth memory is the wide pipe that keeps expensive silicon working, which is why it has become the real bottleneck in the AI boom. SK Hynix reported record 2025 revenue of about 64 billion dollars and a 44 percent net margin, numbers that look more like a luxury brand than a memory supplier. That is what a shortage does to pricing. The same squeeze is driving the fight over inference silicon across the industry.
Where the 26.5 billion goes
The money is not going into a war chest to sit idle. SK Hynix has earmarked it for a new fab in South Korea to ease the worldwide memory shortage, a new advanced packaging facility, and EUV scanners, the machines that make next-generation chips possible. US officials are also nudging the company to build fabs on American soil, the same pressure behind projects like the Texas mega-fab push.
What it signals
A memory company raising this much, this fast, tells you how deep the AI hardware crunch runs. The attention usually goes to flashy model launches and GPU makers, but the supply chain underneath is where the squeeze is tightest. It fits the same pattern as the wider wave of chip spending, from Samsung investment push onward. Whether SK Hynix can hold its 60 percent grip as Samsung and Micron pour money into their own HBM lines is the thing to watch. For now, the market just handed it 26.5 billion reasons to try.