Kioxia Holdings

Shareholders

Foreign ownership · FYE Mar 2026
68.5%
Financial institutions
5.2%
Other corporations
18.5%
Individuals & others
5.3%
Ten largest, combined
53.1%
Shareholders
89,842
Ownership mix Financial institutions Securities firms Other corporations Foreign corporations Foreign individuals Individuals & others

Share of the company held by each class of owner, as filed each year (%). The seven classes add up to the whole company.

Ownership by holder class, every year on record (%), 2025–2026. Scroll sideways for earlier years.
Fiscal year Unit 2025 *1 FYE Mar 2026 *1 FYE Mar
Financial institutions % 2.3%5.2%
Securities firms % 1.7%2.6%
Other corporations % 33.8%18.5%
Foreign corporations % 56.1%68.5%
Foreign individuals % 0.0%0.0%
Individuals & others % 6.1%5.3%
Shareholders holders 75,24489,842
  • *1 Securities report (yuka shoken hokokusho) — status of shares by holder category, as filed
Foreign ownership Foreign holders, combined Foreign corporations Foreign individuals

How much of the company sits with holders outside Japan (%). Almost all of it is institutional: overseas individuals rarely hold Japanese stock directly.

Foreign holdings by fiscal year (%), with the year-on-year move in percentage points.
Fiscal year Unit 2025 *1 FYE Mar 2026 *1 FYE Mar
Foreign holders, combined % 56.2%68.5%
Change pp —+12.3pp
Foreign corporations % 56.1%68.5%
Foreign individuals % 0.0%0.0%
Foreign corporate holders holders 112909
  • *1 Securities report (yuka shoken hokokusho) — status of shares by holder category, as filed
Concentration Ten largest, combined Largest holder

How much of the company the ten largest shareholders hold between them (%). Japanese filings list trust banks and custodians under their own names, so a single line here often stands for many underlying investors.

Combined stake of the ten largest shareholders, and of the single largest, by fiscal year (%).
Fiscal year Unit 2025 *1 FYE Mar 2026 *1 FYE Mar
Ten largest, combined % 89.2%53.1%
Change pp —-36.1pp
Largest holder % 30.5%17.6%
  • *1 Securities report (yuka shoken hokokusho) — ten largest shareholders, as filed
Holders and shares by class

The counts behind the percentages: how many shareholders sit in each class, and how much stock they hold. Shares are in trading units (tan'i) as filed — one unit is usually 100 shares.

Shareholder counts and holdings by class, every year on record. Treasury stock and odd-lot holdings are excluded, so the classes may not sum exactly to the issued total.
Fiscal year Unit 2025 *1 FYE Mar 2026 *1 FYE Mar
Financial institutions — holders holders 1544
Securities firms — holders holders 5062
Other corporations — holders holders 6791,294
Foreign corporations — holders holders 112909
Foreign individuals — holders holders 193408
Individuals & others — holders holders 74,19587,125
All holders holders 75,24489,842
Financial institutions — shares units 123,719281,975
Securities firms — shares units 89,355141,809
Other corporations — shares units 1,824,2271,007,665
Foreign corporations — shares units 3,027,5243,734,748
Foreign individuals — shares units 1,2731,316
Individuals & others — shares units 326,671288,440
All shares units 5,392,7695,455,953
  • *1 Securities report (yuka shoken hokokusho) — status of shares by holder category, as filed
日本語版 — the named list of major shareholders → The ten largest holders are filed under their registered Japanese names — trust-bank omnibus accounts and transliterated custodian names that have no English equivalent — so they are not reproduced here. The Japanese edition carries the full name-by-name table, year by year.

Figures are the ownership breakdown as filed in each year's securities report, at that fiscal year's record date. Treasury stock and odd-lot holdings are excluded from the class percentages, so a company that holds much of its own stock will show classes summing to slightly under the whole.

Read the company history → Financial history → 日本語版（詳細）— full shareholder data in Japanese →

Disclaimer

  • This page is provided for general information only and is not investment advice, nor a recommendation to buy or sell any security.
  • Figures are compiled independently and include our own estimates, approximations and machine-processed data; we make no warranty as to their accuracy or completeness.
  • Sources are primarily each company's securities reports and other public filings, but errors and omissions may remain.
  • Ownership changes continuously; a filed breakdown describes one record date, not the position today.
  • Company names, logos and other marks belong to their respective owners.

Data API

Kioxia Holdings’s history, financials, executives and shareholders are published as static JSON — no key, plain GET. Full specification →

Method Endpoint Returns
GET /api/companies.json All companies
GET /api/285A/manifest.json Resource index
GET /api/285A/history.json History overview
GET /api/285A/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/285A/decisions.json Management decisions (index)
GET /api/285A/decisions/{slug}.json One decision (full dossier)
GET /api/285A/executives.json Executives
GET /api/285A/shareholders.json Major shareholders
GET /api/285A/financials.json Financial statements
GET /api/285A/financials-longterm.json Long-term results
GET /api/285A/segments.json Business segments
GET /api/285A/regions.json Sales by region
GET /api/285A/workforce.json Workforce