Kioxia Holdings Corporation, simply known as Kioxia and stylized as KIOXIA, is a Japanese multinational computer memory manufacturer headquartered in Tokyo, Japan. The company was spun off from the Toshiba conglomerate as Toshiba Memory Corporation (東芝メモリ株式会社, Tōshiba Memori Kabushiki-gaisha) in 2018.[3] It became a wholly owned subsidiary company of Toshiba Memory Holdings Corporation on March 1, 2019 and was renamed to Kioxia in October 2019.[4] In the third quarter of 2018, the company was estimated to have 19% of the global revenue share for NAND flash solid-state drives.[5] The company is the parent company of Kioxia Corporation.


Kioxia is a combination of the Japanese word kioku meaning memory and the Greek word axia meaning value.[6]


In January 2014, the Toshiba Corporation completed its acquisition of OCZ Storage Solutions renaming it to OCZ and making it a brand to Toshiba.[7]

On June 1, 2018, Toshiba Memory Corporation was spun off from the Toshiba Corporation. Toshiba maintained a 40.2% equity in the new company.[2] The new company consisted of all of Toshiba memory businesses. Toshiba Memory Corporation became a subsidiary of the newly formed Toshiba Memory Holdings Corporation on March 1, 2019.

In June 2019, Kioxia experienced a power cut at one of its factories in Yokkaichi, Japan, resulting in the loss of at least 6 exabytes of flash memory, with some sources estimating the loss as high as 15 exabytes. Western Digital used (and still uses) Kioxia's facilities for making its own flash memory chips.[8][9]

On July 18, 2019, Toshiba Memory Holdings Corporation announced it would change its name to Kioxia on October 1, 2019, including all Toshiba memory companies. On October 1, 2019, Toshiba Memory Holdings Corporation was renamed to Kioxia Holdings Corporation and Toshiba Memory Corporation was renamed to Koixia Corporation.[2] This renaming also included companies associated with Toshiba's solid-state drive brand OCZ.[10]

On August 30, 2019, Toshiba Memory Holdings Corporation, not yet renamed to Kioxia, announced that it signed a definitive agreement to acquire Taiwanese electronics manufacturer Lite-On's SSD business for US$165 million. The transaction is expected to close by the first half of 2020.[11][12]


Kioxia Holdings Corporation is the holding company of Kioxia Corporation. Kioxia Corporation is the parent company of several companies including Kioxia Systems Company, Kioxia Advanced Package Corporation, Kioxia America, and Kioxia Europe.[2]


  1. ^ "Toshiba Memory Corporation Announces Merger with K. K. Pangea and Appointment of New Directors, Executive Officers and Statutory Auditors". 2018-08-01. Retrieved 2020-03-18.
  2. ^ a b c d "Company information | KIOXIA".
  3. ^ "Toshiba Corporation". Retrieved 2019-05-17.
  4. ^ "Establishment of Toshiba Memory Holdings Corporation". March 1, 2019. Retrieved September 6, 2019.
  5. ^ Mellor, Chris (23 November 2018). "Grandmaster flash Samsung dominated SSD market in 3Q2018". Retrieved 2019-05-17.
  6. ^ "Former Toshiba memory business to rebrand as Kioxia". ZDNet. 2019-07-19. Retrieved 2020-03-09.
  7. ^ Martyn Williams @martyn_williams. "It's official: Toshiba owns OCZ's SSD business". PCWorld. Retrieved 20 March 2014.
  8. ^ "Power outage causes Toshiba and Western Digital to lose 6 exabytes of NAND". TechSpot.
  9. ^ "Power outage may have ruined 15 exabytes of WD and Toshiba flash storage". AppleInsider.
  10. ^ "Toshiba Memory will rebrand itself as Kioxia by October this year (Updated)". Retrieved 2020-03-18.
  11. ^ Duckett, Chris (2 September 2019). "Toshiba Memory picks up Lite-On SSD business in $165 million deal". ZDNet. Retrieved 20 November 2019.
  12. ^ "Toshiba Memory to Acquire the SSD Business of Taiwan's LITE-ON Technology" (PDF). August 30, 2019. Retrieved September 6, 2019.

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