Samsung hits $1 trillion market cap on record AI chip profits
Samsung Electronics crossed the $1 trillion market cap threshold on May 6, 2026, after its stock jumped more than 15% in a single session — the biggest one-day gain in the company's history. The surge follows a record-breaking first quarter driven almost entirely by the AI industry's insatiable appetite for memory chips. For anyone who uses Nvidia GPUs, Google's data centers, or Apple devices, the underlying chip shortage that's powering Samsung's rise also affects what you pay and how quickly you can access AI services.
The numbers
Samsung's Q1 2026 results are genuinely striking. Operating profit came in at 57.2 trillion won ($39.5 billion) — more than eight times the figure from a year earlier, per CNBC. Revenue hit a record 133.9 trillion won ($92.4 billion). To put that in context: Samsung earned more in the first three months of 2026 than in all of 2025 combined ($29.6 billion full-year). The company is now only the second Asian company, after Taiwan's TSMC, to be valued at $1 trillion.
HBM4 and the Nvidia connection
The core driver is a type of chip most consumers have never heard of: HBM, or high-bandwidth memory. It is the specialist memory that powers AI accelerators, and demand is far outstripping supply. Samsung announced in February that it had become the first company in the world to begin mass production of HBM4 — the sixth generation of the technology — at its Pyeongtaek facility. Those chips are set to be a central component in Nvidia's upcoming Vera Rubin AI architecture, expected to launch in the second half of 2026.
SK Hynix still leads the HBM market with roughly 55% share against Samsung's 25%, according to Morningstar analysts cited by CNBC. But Samsung is closing the gap, and Morningstar notes that margins on standard DRAM — where Samsung is also dominant — have recently started to exceed those on HBM chips, giving the company an additional profit cushion.
What it means for US supply chains
The rally also got a boost from a Bloomberg report on preliminary talks between Apple and both Samsung and Intel over potential US-based chip manufacturing. If confirmed, such a deal would let Apple reduce its heavy dependence on TSMC, a politically sensitive issue given Taiwan's geopolitical position. The report has not been officially confirmed by any of the companies involved.
Samsung's stock gains pulled South Korea's broader Kospi index above 7,000 points for the first time ever, lifting fellow memory maker SK Hynix by more than 10% in the same session. US cloud giants — AWS, Microsoft, Google, and OpenAI — are all competing for allocated capacity from the Samsung-SK Hynix duopoly, which together produce around 90% of global HBM supply. With Samsung's 2026 HBM capacity reported as fully sold out, SamMobile notes that the scarcity premium on memory is unlikely to ease before 2027.
