Samsung Semiconductor is the chip arm of Samsung Electronics and the world's #1 memory supplier by revenue across DRAM, NAND, and HBM combined. It is also the only foundry besides TSMC operating at leading-edge nodes, with 3nm gate-all-around in production and 2nm in development. Across the AI compute supply chain it plays two distinct roles: a high-bandwidth-memory supplier and a merchant logic foundry.
| Field | Value |
|---|---|
| Type | Integrated device manufacturer (IDM) — memory, foundry, logic |
| Parent | Samsung Electronics (founded 1969) |
| HQ | Suwon, South Korea |
| Ticker | KRX: 005930 |
Market position
Samsung is #1 in DRAM globally by share and #1 in NAND. In high-bandwidth memory (HBM) it ranks #2, in a tight race with SK Hynix. In foundry it is the #2 merchant foundry behind TSMC, far ahead of Intel Foundry and GlobalFoundries at the leading edge though a distant second to TSMC overall.
Memory and HBM
Samsung ranks #2 in HBM globally behind SK Hynix. It initially lagged SK Hynix on HBM3E qualification with Nvidia and caught up through 2025 with 12-Hi stacks. Its 2026 HBM output is reported sold out, matching the industry-wide supply crunch (Source: Raw Sources/SemiAnalysis - CoWoS and HBM Supply Chain.md). HBM4 samples are expected in late 2026. Samsung accounts for roughly one-third of global DRAM supply, and jointly with SK Hynix controls approximately two-thirds of the global DRAM market and an even larger share of specialized HBM.
In its memory product lines, Samsung ships HBM3E and is sampling HBM4, alongside V-NAND (high-layer-count 3D NAND).
2026 memory-cycle position
In a May 16, 2026 WSJ Streetwise column, James Mackintosh placed Samsung alongside Micron and SK Hynix in what he called the "sweet spot of the chip cycle," noting that Korea's stock market had become the best-performing in the world in 2026 on the back of Samsung Electronics and SK Hynix gains. Mackintosh argued that cycle-peak forward price-to-earnings ratios have historically been low rather than high, citing Micron's precedent of 5.5× in 2018, 9× in 2022, and sub-10× in May 2026. He treated AI memory-efficiency breakthroughs as the largest unquantifiable threat to memory-chip earnings outlooks, pointing to Alphabet's March 2026 memory-efficiency paper, which caused a temporary memory-stock selloff that later recovered.
45,000-worker strike
A 45,000-person labor strike at Samsung's memory chip plants became public on May 17, 2026, with potential to disrupt DRAM and HBM production. South Korea announced it would "pursue all options to avoid the Samsung strike." The strike was an acute supply-side disruption layered on top of the existing HBM shortage, with 2026 capacity reported sold out across Samsung, SK Hynix, and Micron (Source: click.mail.fortune.com) (Source: Reuters newsletter, May 17 2026). In the cycle-peak reading, a strike-induced supply constraint is short-run-bullish and long-run-irrelevant: once the strike resolves, the existing roughly $150B Micron and new Korean fab capacity arrives on schedule and the cycle dynamics reassert.
Foundry
Samsung Foundry is the #2 merchant foundry globally, a distant second to TSMC. It has produced 3nm gate-all-around (GAA) transistors since 2022, the first in the industry to move to GAA at 3nm, while TSMC stayed on FinFET through its N3 node. Customers include Qualcomm, Tesla, and Google (Tensor SoCs), plus Samsung's own Exynos mobile SoCs. Samsung Foundry's 3nm and 4nm yields have historically trailed TSMC, limiting its ability to win leading-edge AI accelerator tape-outs.
Its foundry roadmap covers the 3nm GAA node (SF3) in production and the 2nm node (SF2) in development.
The Information reported on July 2, 2026 that Anthropic, which has begun early-stage work on its own AI chip, has held talks with Samsung as a potential manufacturing partner — a prospective leading-edge AI-accelerator customer for the foundry business (Source: theinformation.com).
On July 24, 2026, Samsung Electronics signed a memorandum of understanding with Broadcom valued at more than $200 billion, covering HBM4 and HBM4E high-bandwidth-memory supply and 2-nanometer foundry manufacturing for Broadcom's next-generation AI chips through 2030. Subsequent reporting described the scope as spanning memory, foundry and advanced packaging on Samsung's 2-nanometer and below processes, and as including joint development of HBM4E and HBM5. The agreement was signed at an AI summit in San Francisco (Source: thestar.com.my; cnbc.com).
Geopolitical position
Alongside SK Hynix, Samsung is a pillar of the US-aligned memory bloc and a South Korean strategic asset. It is building a fab in Taylor, Texas of more than $17 billion with CHIPS Act subsidies, part of broader reshoring to reduce Asia-concentration risk. Samsung also operates a NAND fab in Xi'an, China, subject to export-license carve-outs and ongoing scrutiny. Like SK Hynix, it is bound by the October 2024 BIS HBM rule when exporting to Chinese customers.
On June 29, 2026 South Korea laid out an industrial strategy centered on a roughly $576 billion AI-chip investment drive, with Samsung preparing a pledge of about 1,000 trillion won (about $648 billion) over the next decade. Analysts questioned the following day whether the planned capacity buildout would outpace AI demand, framing the effort as a test of optimism about the AI cycle (Source: reuters.com; reuters.com).