Kioxia is a Japanese semiconductor manufacturer that develops and produces NAND flash memory and solid-state drives (SSDs). Formerly known as Toshiba Memory, the operating company is now part of Kioxia Holdings Corporation, which is listed on the Tokyo Stock Exchange Prime Market under code 285A. Its large manufacturing sites in Yokkaichi and Kitakami supply storage semiconductors for smartphones, PCs and data centers.
What does Kioxia do?
Kioxia Group focuses on NAND flash memory, a type of non-volatile memory that retains data even when power is removed. Its products also include SSDs, embedded memory and memory cards. NAND is used for storage in smartphones, PCs, servers, data centers, vehicles and industrial equipment.
Company overview: Kioxia Holdings and Kioxia Corporation
| Listed company | Kioxia Holdings Corporation |
|---|---|
| Operating company | Kioxia Corporation |
| President and CEO | Hiroo Ota |
| Headquarters | Shibaura, Minato-ku, Tokyo, Japan |
| Market | Tokyo Stock Exchange Prime Market |
| Securities code | 285A |
| Consolidated employees | 15,218 (as of March 31, 2026) |
| Business | Development, manufacture and sale of NAND flash memory, SSDs and related products |
Kioxia Holdings is responsible for group strategy and management, while Kioxia Corporation operates the memory and SSD business. The business was separated from Toshiba in 2017 as Toshiba Memory and adopted the Kioxia name in 2019.
Main products and applications
- BiCS FLASH: three-dimensional stacked NAND flash memory
- Client SSDs: storage for notebook and desktop PCs
- Enterprise SSDs: storage for servers and data centers
- Embedded memory: storage for smartphones, vehicles and industrial equipment
- Memory cards and USB flash drives: consumer storage products
Revenue by application
SSDs and storage are currently Kioxia’s largest application category. Growth in data-center and enterprise SSD demand can help offset fluctuations in smart-device demand. The quarter labels in the chart follow Kioxia’s fiscal-year convention.
Revenue and profit-margin trends
For the fiscal year ended March 2026, Kioxia reported revenue of JPY 2.338 trillion, an operating margin of 37.2% and a net margin of 23.7%. This was a sharp recovery from the loss recorded in the fiscal year ended March 2024. NAND pricing, data-center demand and the SSD product mix remain major drivers of profitability.
Manufacturing sites and joint production with Sandisk
Kioxia’s main production sites are the Yokkaichi Plant in Mie Prefecture and the Kitakami Plant in Iwate Prefecture. Kioxia and Sandisk cooperate in NAND research, development and manufacturing. Their joint-venture agreements for the Yokkaichi operations have been extended through the end of 2034.
Read more about Kioxia’s manufacturing sites (Japanese)
Competitors
- Samsung Electronics
- SK hynix
- Micron Technology
- Solidigm
- Sandisk
Kioxia stock
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Frequently asked questions
Is Kioxia a Toshiba subsidiary?
No. Kioxia is now an independent corporate group. Kioxia Holdings owns 100% of Kioxia Corporation.
What is the relationship between Kioxia and Sandisk?
The two companies are partners in NAND research, development and factory operations. Sandisk is not Kioxia’s parent company.
What drives Kioxia’s financial performance?
Performance is affected by NAND selling prices and shipment volumes, demand from smartphones, PCs and data centers, factory utilization and foreign-exchange movements.
