SK Hynix pulls 65% of revenue from the US as AI infrastructure demand drives HBM chip sales. Crypto mining plays no role in the current wave.
The South Korean chipmaker pulls roughly 65% of its revenue from the United States. That's not because Americans suddenly started buying more RAM sticks. It's because the AI infrastructure buildout is overwhelmingly US-based, and SK Hynix makes the memory chips that power it.
SK Hynix posted 97.1 trillion won, about $64.1 billion, in revenue for 2025. Net income hit 42.9 trillion won, roughly $28.3 billion. The engine behind it all is high-bandwidth memory, the specialized chips that Nvidia's AI accelerators need to function.
SK Hynix commands somewhere between 50% and 64% of the global HBM market, depending on the quarter. In Q2 2025, it held roughly 62% of HBM shipments. By Q3, its revenue share sat at 57%. The company's HBM production is sold out well into 2026. Nvidia is among the primary customers. Next-generation HBM3E and HBM4 chips are in the pipeline, designed for the computational demands of frontier AI models.
SK Hynix debuted on the Nasdaq in July 2026, raising $26.5 billion. That made it the largest US listing by a foreign company and the second-largest share sale in US history, trailing only SpaceX.
South Korean chipmakers have historically traded at a discount versus their American and Taiwanese peers. By listing on Nasdaq, SK Hynix is positioning itself to be valued as the global AI infrastructure play it actually is, not like a regional memory manufacturer.
The revenue concentration tells a clear story: the current wave of HBM demand is being driven almost entirely by AI workloads, not crypto mining. None of the major crypto-focused publications covered this breakdown, indicating the connection simply isn't there right now.
SK Hynix's HBM chips being sold out through 2026 suggests that hyperscalers – Microsoft, Google, Meta, Amazon – are not pulling back on AI infrastructure spending. Samsung has struggled with yield issues on its own HBM products. Micron, while making progress, remains a distant third.
The risk is concentration. When 65% of revenue comes from one country and the bulk of demand comes from one application, any disruption – trade policy, export controls, a sudden cooling in AI investment – would hit disproportionately hard. SK Hynix operates fabs in South Korea and China, adding another layer of geopolitical complexity.
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