Kioxia

キオクシア / キオクシアホールディングス株式会社

A leading Japanese manufacturer of NAND flash memory and enterprise solid-state drives that provide high-capacity storage for AI data centers.

TSE: 285A (Prime Market)
Profile as of September 12, 2026
#28 in the AsiaAI Tech Index
How the ranking works →

Kioxia is a meaningful supplier of NAND and enterprise SSDs into the data-storage side of AI infrastructure. Its FY2025 results demonstrate the operating leverage of a NAND upcycle, but the business remains exposed to commodity memory pricing, concentrated Japanese manufacturing, and competitors with comparable capabilities.

Key figures

Revenue FY2025: 2,337,628 million Japanese yen
Revenue growth FY2025: 37.0%
Operating margin FY2025: 37.2%
Net income FY2025: 554,490 million Japanese yen
R&D spend FY2025: 141,052 million Japanese yen
Capital expenditure FY2025: 283,674 million Japanese yen
Market capitalization 2026-09-11: 29.63 trillion Japanese yen Estimate
Global NAND revenue share Q2 2026: 14%
LC9 enterprise SSD capacity: Up to 245.76 TB
Generation 10 BiCS FLASH bit density: 37.6 Gb/mm²

Overview

Kioxia Holdings Corporation is a listed Japanese NAND flash and solid-state-drive producer. The operating memory business began as Toshiba Memory Corporation in 2017 when it was carved out of Toshiba Corporation, and it was renamed Kioxia in 2019. The listed holding company operates as Kioxia Holdings Corporation.

The company's core capability is high-volume 3D NAND manufacturing and the conversion of that NAND into SSDs designed for client, enterprise, and data-center workloads. Its manufacturing base is the Yokkaichi and Kitakami NAND production network in Japan, which it jointly operates with SanDisk. This joint fab network gives Kioxia scale economics and a deep process-development base.

Kioxia matters most in the silicon and AI server hardware layers because it manufactures NAND flash and converts that production into high-capacity enterprise SSDs. These drives are used to hold the datasets and working storage surrounding AI compute, making Kioxia a critical infrastructure provider for data-heavy AI applications.

The AI angle

Kioxia supplies NAND flash memory and enterprise NVMe solid-state drives used to store AI training data, retrieval corpora, vector-database indexes, inference context caches, checkpoints, and GPU-accessible data sets. Its AI link is storage-led: greater model sizes and inference workloads increase the need for high-capacity, high-throughput flash storage in servers and storage arrays.

Its relevant current products include the LC9 enterprise SSD, with capacity up to 245.76 TB, the CM9 PCIe 5.0 enterprise SSD, the CM10 PCIe 6.0 enterprise SSD, and the GP Series SSD for AI GPU-initiated workloads. The CM10 introduces PCIe 6.0, supports liquid-cooling configurations, and targets AI inference and context caching. The GP Series is designed for GPU-initiated access under NVIDIA Storage-Next, reducing storage bottlenecks around GPU systems.

The company does not supply AI accelerators, central processing units, HBM, leading-edge logic wafers, cloud platforms, or foundation models. Its connection reaches revenue primarily through the SSD and storage application category, but Kioxia does not disclose AI-related revenue as a percentage of group revenue.

Technology and moat

Kioxia's moat comes from NAND process integration, fab-scale execution, firmware, SSD reliability, and long qualification cycles. Its BiCS FLASH platform, accumulated process knowledge, and enterprise qualification cycles create entry barriers. Its Generation 10 BiCS FLASH 2 Tb four-bit-per-cell technology reaches 37.6 Gb/mm² bit density, supporting advanced enterprise drives like the CM10 and LC9.

NAND remains a cyclical commodity market, however, and Kioxia does not have the structural pricing power associated with a unique logic process node, HBM stack, or proprietary accelerator architecture. Its technical differentiation in AI storage is at the product level, such as supporting liquid-cooling configurations and GPU-initiated access, but these features do not replace GPU memory or HBM.

Samsung, SK hynix, Micron, and SanDisk have comparable NAND technology programs, so a rival needs to replicate manufacturing yield, cost, endurance, controller firmware, and enterprise qualification rather than overcome an exclusive platform lock-in.

Five-pillar assessment

Scale and market position: Holds 14% of global NAND revenue in Q2 2026, supported by a large Japanese fab footprint and joint manufacturing scale with SanDisk.
Technology and R&D: Deep process integration in 3D NAND, highlighted by Generation 10 BiCS FLASH and PCIe 6.0 enterprise SSDs designed for AI workloads.
Supply-chain centrality: Relies on a critical joint manufacturing partnership with SanDisk and aligns product architectures with NVIDIA, though specific customers and suppliers remain undisclosed.
Financial momentum: Strong FY2025 revenue growth of 37.0% and a return to operating profitability, driven by a NAND market recovery and AI data-center demand.
Governance and quality: Independent public company with transparent IFRS reporting, though Toshiba and Bain-linked entities remain large shareholders.

Supply chain and relationships

Kioxia depends on NAND-fabrication equipment, specialty chemicals, wafers, photomasks, packaging materials, controllers, and enterprise-server interface standards. Specific upstream equipment and materials suppliers are not disclosed in the available audited materials. It relies heavily on its joint manufacturing arrangements with SanDisk to operate the Yokkaichi and Kitakami NAND production network, sharing manufacturing-scale economics.

On the customer side, Kioxia does not publicly identify its largest customers or disclose customer revenue shares, so named attributions rely on market reporting. NVIDIA is a technology-ecosystem partner rather than a disclosed direct customer, with Kioxia positioning its CM10 SSDs for NVIDIA CMX architecture and GP Series SSDs for NVIDIA Storage-Next architecture. The lack of disclosed customer concentration makes it difficult to assess its exact exposure to specific hyperscalers or server OEMs.

Partners

SanDiskJoint operation of Yokkaichi and Kitakami NAND fabrication sites
NVIDIASSDs support NVIDIA CMX and Storage-Next architectures

Competitors

Samsung ElectronicsInferredCompetes in NAND flash memory and enterprise SSDs
SK HynixInferredCompetes in NAND flash memory and enterprise SSDs
Micron TechnologyInferredCompetes in NAND flash memory and enterprise SSDs
SanDiskInferredCompetes in NAND flash and storage products

Geopolitics and risk

Kioxia's largest concentration risk is geographic. Yokkaichi and Kitakami concentrate a large part of its production footprint in Japan, exposing output to earthquakes, power interruptions, water constraints, logistics disruptions, and regional operational incidents. This lack of geographic diversification means a single regional event could significantly impact its global NAND supply.

It must also navigate China exposure and export controls. Restrictions on semiconductor equipment and technology transfers can affect Kioxia's equipment ecosystem, Chinese business, and customer demand even where Kioxia itself is not the target of a specific sanction. Furthermore, the joint fab network with SanDisk gives Kioxia scale but also creates operational and strategic dependence on a company that is itself a NAND competitor, complicating its strategic independence.

Risk matrix
Risk	Severity	Why it matters
NAND price cyclicality	High	Earnings remain highly sensitive to NAND supply, pricing, inventory conditions, and utilization rates.
Japanese manufacturing concentration	High	Production is concentrated in Japan, exposing output to earthquakes and regional disruptions.
SanDisk joint-manufacturing dependency	High	The joint fab network creates operational dependence on a company that is also a competitor.
Competition from NAND producers	High	Samsung, SK hynix, Micron, SanDisk, and YMTC compete through capacity expansion and pricing.
AI demand concentration	Medium	Storage demand can lag accelerator procurement or shift toward competing SSD suppliers.
China exposure and export controls	Medium	Restrictions can affect Kioxia's equipment ecosystem and Chinese business.
Debt and capital intensity	Medium	Kioxia funds a capital-intensive roadmap while holding significant bonds and borrowings.
Customer qualification transitions	Medium	Moving customers to new interfaces and formats requires lengthy qualification cycles.

Governance and ownership

Kioxia Holdings is an independent, publicly listed company on the Tokyo Stock Exchange Prime Market. It is not state-owned, and no evidence indicates Japanese state control or state influence. Its largest disclosed shareholder is Toshiba Corporation with 17.59% as of March 2026, followed by Bain-linked BCPE Pangea investment vehicles. None of these stakes alone constitutes a disclosed controlling interest.

The board includes Executive Chairman Stacy J. Smith and President and CEO Hiroo Ota, alongside outside directors. It reports under IFRS and is subject to Tokyo Stock Exchange disclosure requirements and Japan's Financial Instruments and Exchange Act, providing standard public financial transparency.

What to watch

Whether Kioxia converts CM10, GP Series, and LC9 evaluations into publicly disclosed hyperscaler or storage-array design wins.
Whether enterprise SSD revenue grows faster than the broader NAND market.
The pace of Generation 10 BiCS FLASH production ramp and yield improvements.
The scale and timing of FY2026 capital expenditure.
Any changes in the SanDisk manufacturing relationship or utilization decisions.
Whether Kioxia maintains or improves its 14% global NAND-revenue share.

Recent developments

July 30, 2026Announced the CM10 Series, its first PCIe 6.0 enterprise SSD, designed for AI inference and context caching.
May 15, 2026Reported FY2025 revenue of 2,337,628 million Japanese yen and operating profit of 870,369 million Japanese yen.
March 16, 2026Announced the GP Series super-high-IOPS SSD for AI GPU-initiated workloads and NVIDIA Storage-Next architecture.
March 12, 2026Highlighted AiSAQ technology for vector databases and LC9 enterprise SSDs with 245.76 TB capacity.
January 30, 2026Announced Hiroo Ota would become President and Chief Executive Officer, effective April 1, 2026.
May 15, 2025Reported FY2024 revenue of 1,706,460 million Japanese yen, marking a major recovery from the preceding NAND downturn.

Coverage on AsiaAI.FYI

$2T IPO Prep: Anthropic Reports Two Consecutive Quarters of Profitability September 14, 2026
US AI Safety Warning Wipes Billions From SoftBank and Kioxia September 14, 2026
CXMT Reaches 82% Profit Margin, Beating Samsung and SK hynix on Cost Efficiency September 12, 2026
Microsoft Plans to Triple Data Centers by 2032, Locking in a Decade of HBM and Foundry Demand September 11, 2026
Infineon’s GaN Surge: How AI Data Centres Are Reshaping the Power Chip Supply Chain September 7, 2026
Kioxia Plans to Replace Pricey AI DRAM With CXL Flash Memory Modules September 6, 2026

About this profile

Compiled with AI-assisted research from company filings, market data, and published reporting as of September 12, 2026, then reviewed by AsiaAI.FYI. Figures marked Estimate are not company-reported. Check primary filings before relying on any number.

Confidence: B. Financial statements, leadership, and operating products are supported by company filings, but customer identity, AI-revenue exposure, and exact SanDisk joint-venture terms lack disclosure.

Main sources: Kioxia Holdings annual securities report; Kioxia investor-relations disclosures; Counterpoint Research market research; Market-data services.

All 57 sources

Position in the AI stack

Manufactures the NAND flash and enterprise NVMe SSDs used to store AI training data, retrieval corpora, and inference context caches.

Legal name: Kioxia Holdings Corporation
Formerly: Toshiba Memory Corporation, Kioxia Corporation
Headquarters: Tokyo, Japan
Founded: 2019
Leadership: Hiroo Ota, President and Chief Executive Officer, Representative Director
Stacy J. Smith, Executive Chairman and Director
Employees: 15,218 consolidated employees (2026-03-31)
Ownership: Publicly listed; part of Kioxia Group
Listings: TSE: 285A (Prime Market)
Business: NAND flash memory and solid-state drives
Sector: Memory
Website: kioxia-holdings.com/en-jp