ATEYY · Advantest Corp · Shareholders & Ownership

$216.01 -7.65 (-3.42%) At close · Nov 4

Market Cap

$155.87B

722.10M

Volume · Nov 4 155.01K Avg daily vol (3M) 163.56K

Every disclosed holder of ATEYY in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns ATEYY

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: shares outstanding cannot be set against these holders.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	20	85,797	—	Yes
Insiders (Forms 3, 4, 5)	0	0	—	Yes
13D/G-only blocks	0	0	—	Yes
Registered funds (N-PORT, not summed)	12	97,495	—	No

% Out is unavailable: a foreign private issuer reports ordinary shares, a different unit from the listed shares.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of ATEYY

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Boston Common Asset Management, LLC 13F CIK 1409427 · Registered investment adviser · Sep 30, 2026	33,638	—	+1,199	Sep 30, 2026
2	ActivePassive International Equity ETF Fund S000075230 · Registered fund · Aug 31, 2026 Trust for Professional Managers, not summed	21,653	—	+1,260	Aug 31, 2026	Trust for Professional Managers, not summed
3	iShares Dynamic Equity Active ETF Fund S000090468 · Registered fund · Jul 31, 2026 BlackRock ETF Trust, not summed	19,004	—	-2,161	Jul 31, 2026	BlackRock ETF Trust, not summed
4	RHUMBLINE ADVISERS 13F CIK 1115418 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	17,524	—	+2,580	Jun 30, 2026	carried, not yet filed for the newest quarter
5	SP Funds S&P Global Technology ETF Fund S000082880 · Registered fund · Jul 31, 2026 SP Funds Trust, not summed	15,213	—	+3,807	Jul 31, 2026	SP Funds Trust, not summed
6	Ativo Capital Management LLC 13F CIK 1423065 · Registered investment adviser · Sep 30, 2026	14,711	—	+1,074	Sep 30, 2026
7	Tuttle Capital Concentrated Memory Stack ETF Fund S000104565 · Registered fund · Jul 31, 2026 ETF Opportunities Trust, not summed	13,552	—	—	Jul 31, 2026	ETF Opportunities Trust, not summed
8	SP Funds S&P World (ex-US) ETF Fund S000083496 · Registered fund · Jul 31, 2026 SP Funds Trust, not summed	7,559	—	+1,709	Jul 31, 2026	SP Funds Trust, not summed
9	GAMMA Investing LLC 13F CIK 2010235 · Registered investment adviser · Sep 30, 2026	6,243	—	+559	Sep 30, 2026
10	YORKTOWN GROWTH FUND Fund S000008424 · Registered fund · Jul 31, 2026 American Pension Investors Trust, not summed	5,400	—	0	Jul 31, 2026	American Pension Investors Trust, not summed
11	AAM Transformers ETF Fund S000076555 · Registered fund · Jul 31, 2026 ETF Series Solutions, not summed	4,370	—	+837	Jul 31, 2026	ETF Series Solutions, not summed
12	BLUEPRINT ADAPTIVE GROWTH ALLOCATION FUND Fund S000068289 · Registered fund · Aug 31, 2026 Ultimus Managers Trust, not summed	3,775	—	0	Aug 31, 2026	Ultimus Managers Trust, not summed
13	Canopy Partners, LLC 13F CIK 1960860 · Unknown · Sep 30, 2026	3,684	—	-82	Sep 30, 2026
14	Dunham International Stock Fund Fund S000020979 · Registered fund · Jul 31, 2026 Dunham Funds, not summed	3,510	—	-1,000	Jul 31, 2026	Dunham Funds, not summed
15	Abacus FCF International Leaders ETF Fund S000056835 · Registered fund · Jul 31, 2026 Abacus FCF ETF Trust, not summed	3,170	—	-2,310	Jul 31, 2026	Abacus FCF ETF Trust, not summed
16	Diversified Trust Co 13F CIK 1479844 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,095	—	+205	Jun 30, 2026	carried, not yet filed for the newest quarter
17	YOUSIF CAPITAL MANAGEMENT, LLC 13F CIK 1858789 · Registered investment adviser · Sep 30, 2026	1,896	—	-371	Sep 30, 2026
18	Calydon Capital 13F CIK 1759271 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,433	—	+1,433	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Enterprise Financial Services Corp 13F CIK 1025835 · Bank · Sep 30, 2026	1,279	—	+68	Sep 30, 2026
20	Westside Investment Management, Inc. 13F CIK 1538383 · Registered investment adviser · Sep 30, 2026	800	—	0	Sep 30, 2026
21	PNC FINANCIAL SERVICES GROUP, INC. 13F CIK 713676 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	704	—	+91	Jun 30, 2026	carried, not yet filed for the newest quarter
22	ATLAS CAPITAL ADVISORS INC. 13F CIK 1434165 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	270	—	+270	Jun 30, 2026	carried, not yet filed for the newest quarter
23	Federated Hermes International Leaders ETF Fund S000096594 · Registered fund · Jul 31, 2026 Federated Hermes ETF Trust, not summed	221	—	—	Jul 31, 2026	Federated Hermes ETF Trust, not summed
24	First Command Advisory Services, Inc. 13F CIK 1727336 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	167	—	+146	Jun 30, 2026	carried, not yet filed for the newest quarter
25	IMA Advisory Services, Inc. 13F CIK 1455495 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	127	—	+102	Jun 30, 2026	carried, not yet filed for the newest quarter
26	Ascentis Wealth Management, LLC 13F CIK 2032602 · Unknown · Sep 30, 2026	117	—	+117	Sep 30, 2026
27	NPF Core Equity ETF Fund S000095135 · Registered fund · Jul 31, 2026 Elevation Series Trust, not summed	68	—	0	Jul 31, 2026	Elevation Series Trust, not summed
28	HUNTINGTON NATIONAL BANK 13F CIK 49205 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	56	—	+55	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Gleason Group, Inc. 13F CIK 1822632 · Registered investment adviser · Sep 30, 2026	26	—	0	Sep 30, 2026
30	Horrell Capital Management, Inc. 13F CIK 1385925 · Registered investment adviser · Sep 30, 2026	13	—	0	Sep 30, 2026
31	Copeland Capital Management, LLC 13F CIK 1541743 · Investment adviser · Sep 30, 2026	10	—	+10	Sep 30, 2026
32	TRUST CO OF VERMONT 13F CIK 1134008 · Unknown · Sep 30, 2026	4	—	+4	Sep 30, 2026
33	BlackRock Japan Co., Ltd., filing for 12 joint holders Non-US · Jun 13, 2025 EDINET major-holding notification, previously 7.75%, 9.01% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Jun 13, 2025	EDINET major-holding notification, previously 7.75%, 9.01% of voting rights as filed, no share count, issuer-wide, not summed
34	BlackRock Japan Co., Ltd., filing for 12 joint holders Non-US · Jun 30, 2026 EDINET major-holding notification, previously 10.41%, 9.32% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Jun 30, 2026	EDINET major-holding notification, previously 10.41%, 9.32% of voting rights as filed, no share count, issuer-wide, not summed
35	BlackRock Japan Co., Ltd., filing for 13 joint holders Non-US · Feb 6, 2026 EDINET major-holding notification, previously 9.01%, 10.41% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Feb 6, 2026	EDINET major-holding notification, previously 9.01%, 10.41% of voting rights as filed, no share count, issuer-wide, not summed
36	Mitsubishi UFJ Financial Group Inc., filing for 3 joint holders Non-US · Oct 12, 2026 EDINET major-holding notification, previously 6.07%, 4.94% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Oct 12, 2026	EDINET major-holding notification, previously 6.07%, 4.94% of voting rights as filed, no share count, issuer-wide, not summed
37	Nomura Securities Co.,Ltd., filing for 3 joint holders Non-US · Mar 13, 2026 EDINET major-holding notification, previously 12.34%, 13.37% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Mar 13, 2026	EDINET major-holding notification, previously 12.34%, 13.37% of voting rights as filed, no share count, issuer-wide, not summed
38	Nomura Securities Co.,Ltd., filing for 3 joint holders Non-US · Mar 31, 2026 EDINET major-holding notification, previously 13.37%, 12.53% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Mar 31, 2026	EDINET major-holding notification, previously 13.37%, 12.53% of voting rights as filed, no share count, issuer-wide, not summed
39	Nomura Securities Co.,Ltd., filing for 3 joint holders Non-US · Oct 8, 2026 EDINET major-holding notification, previously 12.53%, 11.52% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Oct 8, 2026	EDINET major-holding notification, previously 12.53%, 11.52% of voting rights as filed, no share count, issuer-wide, not summed
40	Sumitomo Mitsui Trust Asset Management Co.,Ltd., filing for 2 joint holders Non-US · Sep 15, 2025 EDINET major-holding notification, previously 9.22%, 9.31% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Sep 15, 2025	EDINET major-holding notification, previously 9.22%, 9.31% of voting rights as filed, no share count, issuer-wide, not summed
41	Sumitomo Mitsui Trust Asset Management Co.,Ltd., filing for 2 joint holders Non-US · Aug 31, 2026 EDINET major-holding notification, previously 9.31%, 8.24% of voting rights as filed, no share count, issuer-wide, not summed	—	—	—	Aug 31, 2026	EDINET major-holding notification, previously 9.31%, 8.24% of voting rights as filed, no share count, issuer-wide, not summed

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Key facts CIK 1158838 CUSIP 00762U200 13F (30d) 12 filings 12 filers Visit website Investor relations