Hamamatsu Photonics

Shareholders

Foreign ownership · FYE Sep 2025: 30.0%
Financial institutions: 30.4%
Other corporations: 4.7%
Individuals & others: 32.2%
Ten largest, combined: 39.4%
Shareholders: 68,732

Ownership mix Government 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 (%), 2019–2025. Scroll sideways for earlier years.
Fiscal year	Unit	2019 ^*1 FYE Sep	2020 ^*1 FYE Sep	2021 ^*1 FYE Sep	2022 ^*1 FYE Sep	2023 ^*1 FYE Sep	2024 ^*1 FYE Sep	2025 ^*1 FYE Sep
Government	%	—	—	—	—	—	—	0.1%
Financial institutions	%	27.9%	29.4%	29.4%	30.3%	29.0%	29.3%	30.4%
Securities firms	%	0.7%	0.6%	1.1%	1.1%	1.5%	2.3%	2.7%
Other corporations	%	10.2%	10.2%	9.7%	9.8%	9.8%	4.5%	4.7%
Foreign corporations	%	35.0%	35.6%	36.5%	35.1%	35.9%	34.8%	29.9%
Foreign individuals	%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%
Individuals & others	%	26.1%	24.1%	23.2%	23.5%	23.7%	28.9%	32.2%
Shareholders	holders	21,500	18,419	18,345	21,481	23,765	43,365	68,732

*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	2019 ^*1 FYE Sep	2020 ^*1 FYE Sep	2021 ^*1 FYE Sep	2022 ^*1 FYE Sep	2023 ^*1 FYE Sep	2024 ^*1 FYE Sep	2025 ^*1 FYE Sep
Foreign holders, combined	%	35.1%	35.7%	36.6%	35.2%	36.1%	34.9%	30.0%
Change	pp	—	+0.6pp	+0.9pp	-1.4pp	+0.9pp	-1.2pp	-4.9pp
Foreign corporations	%	35.0%	35.6%	36.5%	35.1%	35.9%	34.8%	29.9%
Foreign individuals	%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%
Foreign corporate holders	holders	557	585	621	621	660	588	381

*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	2016 ^*1 FYE Sep	2017 ^*1 FYE Sep	2018 ^*1 FYE Sep	2019 ^*1 FYE Sep	2020 ^*1 FYE Sep	2021 ^*1 FYE Sep	2022 ^*1 FYE Sep	2023 ^*1 FYE Sep	2024 ^*1 FYE Sep	2025 ^*1 FYE Sep
Ten largest, combined	%	32.8%	33.8%	34.5%	33.0%	35.4%	39.2%	42.7%	42.4%	39.0%	39.4%
Change	pp	—	+1.0pp	+0.7pp	-1.5pp	+2.4pp	+3.8pp	+3.5pp	-0.3pp	-3.4pp	+0.4pp
Largest holder	%	5.3%	5.4%	6.9%	7.6%	9.6%	14.9%	18.7%	17.6%	16.1%	16.6%

*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	2019 ^*1 FYE Sep	2020 ^*1 FYE Sep	2021 ^*1 FYE Sep	2022 ^*1 FYE Sep	2023 ^*1 FYE Sep	2024 ^*1 FYE Sep	2025 ^*1 FYE Sep
Government — holders	holders	—	—	—	—	—	—	1
Financial institutions — holders	holders	67	62	62	70	66	52	47
Securities firms — holders	holders	36	28	35	34	41	37	51
Other corporations — holders	holders	153	138	134	181	206	487	480
Foreign corporations — holders	holders	557	585	621	621	660	588	381
Foreign individuals — holders	holders	15	13	16	24	38	132	257
Individuals & others — holders	holders	20,672	17,593	17,477	20,551	22,754	42,069	67,515
All holders	holders	21,500	18,419	18,345	21,481	23,765	43,365	68,732
Government — shares	units	—	—	—	—	—	—	1,673
Financial institutions — shares	units	459,751	484,868	484,655	500,508	478,930	484,011	971,141
Securities firms — shares	units	11,454	9,414	18,270	18,607	24,067	38,390	85,170
Other corporations — shares	units	168,570	167,853	159,380	161,264	161,237	74,873	148,674
Foreign corporations — shares	units	577,419	587,270	602,384	579,193	592,803	574,625	953,211
Foreign individuals — shares	units	2,140	2,121	2,111	2,134	2,210	1,678	3,197
Individuals & others — shares	units	430,389	398,349	383,194	388,319	390,754	475,884	1,026,465
All shares	units	1,649,723	1,649,875	1,649,994	1,650,025	1,650,001	1,649,461	3,189,531

*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

Hamamatsu Photonics’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/6965/manifest.json	Resource index
GET	/api/6965/history.json	History overview
GET	/api/6965/timeline.json	Chronology
GET	/api/decisions.json	All management decisions (index)
GET	/api/6965/decisions.json	Management decisions (index)
GET	/api/6965/decisions/{slug}.json	One decision (full dossier)
GET	/api/6965/executives.json	Executives
GET	/api/6965/shareholders.json	Major shareholders
GET	/api/6965/financials.json	Financial statements
GET	/api/6965/financials-longterm.json	Long-term results
GET	/api/6965/segments.json	Business segments
GET	/api/6965/regions.json	Sales by region
GET	/api/6965/workforce.json	Workforce