Memory companies
32 companies in the Memory part of the semiconductor & AI value chain — Memory chips — DRAM, NAND flash, and the emerging high-bandwidth memory (HBM) used in AI accelerators — are the highest-volume semiconductor category by revenue. The segment is an oligopoly: Samsung, SK hynix, and Micron make almost all DRAM; Samsung, SK hynix, Kioxia, and SanDisk dominate NAND. HBM is the current growth flashpoint, with SK hynix supplying the majority of HBM to NVIDIA. Memory is also highly cyclical, with pricing swings that affect the broader supply chain's financial health.
Subsegments
Market share
Companies
- Seagate Technology Holdings — Hard disk drive maker; one of two dominant HDD suppliers to hyperscale and enterprise data centers.
- Western Digital — Hard disk drive maker; refocused on HDDs after spinning off its NAND/flash business as SanDisk in February 2025.
- Phison Electronics — Leading NAND flash controller and storage-solution designer.
- Silicon Motion — Leading NAND controller designer for SSDs and embedded storage.
- Kingston Technology — World's largest independent DRAM module and SSD maker.
- Samsung Electronics — World's largest memory maker, plus leading-edge foundry and Exynos design.
- SK hynix — HBM leader supplying NVIDIA; top-two in DRAM, owns Solidigm NAND.
- GigaDevice Semiconductor — Top-three NOR flash vendor and Chinese MCU designer.
- NetApp — Enterprise storage systems and data-management software vendor (ONTAP, all-flash arrays) for on-premises and cloud data centers.
- Ingenic Semiconductor — Chinese MCU, edge SoC, and automotive memory designer.
- Macronix International — Leading NOR flash and ROM maker.
- ADATA Technology — Memory module and SSD maker.
- SMART Modular Technologies — Specialty memory modules and storage (Penguin Solutions).
- Kioxia Holdings — NAND inventor (ex-Toshiba Memory); operates JV fabs with SanDisk.
- Micron Technology — Only US-based DRAM/NAND maker; ramping HBM for AI accelerators.
- SanDisk — NAND and SSD maker spun out of Western Digital in 2025.
- Solidigm — NAND flash and enterprise SSD maker, an SK Hynix subsidiary.
- Shenzhen Longsys Electronics — NAND/DRAM module maker; owner of the Lexar consumer-storage brand (acquired from Micron) and FORESEE industrial-storage brand.
- ChangXin Memory (CXMT) — China's domestic DRAM champion, scaling DDR5 and early HBM.
- Yangtze Memory (YMTC) — China's NAND flash champion with Xtacking architecture.
- Nanya Technology — Taiwanese DRAM maker focused on specialty and consumer DRAM.
- Winbond Electronics — Specialty memory maker: NOR flash and niche DRAM.
- Innodisk — Industrial-grade memory and embedded storage maker.
- Transcend Information — Memory module, flash, and embedded storage maker.
- Giantec Semiconductor — Chinese EEPROM and mixed-signal chip designer.
- Netlist — Memory-module maker and memory-technology IP licensor.
- Apacer Technology — Industrial-grade memory modules and solid-state drives.
- Weebit Nano — ReRAM (resistive RAM) non-volatile memory IP developer.
- Team Group — Memory module and storage products maker.
- Everspin Technologies — Commercial MRAM maker for industrial and aerospace.
- Ferroelectric Memory Company — FeFET ferroelectric non-volatile memory IP.
- Integrated Silicon Solution — Specialty DRAM and SRAM for automotive, industrial, and comms.
Open the interactive Memory view →
Track the chain
What moved in the semiconductor supply chain — This Week in the Chain, the free weekly wafergraph briefing.
Subscribe to the free weekly briefing →
Free · no login · 615 companies, updated weekly