Company overview

Business, legal identity, ownership structure and classifications.

What the company does

About

Alpha's canonical identity and public leadership record for ADVANTEST CORP.

Sector and industry values retain their source labels. A classification provider, taxonomy version and assignment date are not established unless the cited record states them.

Stable business record

Identity and status

Ownership and listing state

Public listing published

Ownership not asserted

The canonical public record includes at least one active security listing.

Inspect status source
Legal name
ADVANTEST CORP
Inspect source
Country
US
Inspect source
Jurisdiction
JP
Inspect source

Source-backed public-market identity

Index memberships

Current memberships are attached to a specific security and listing. Announcements, effective dates, and removals remain distinct states; Alpha does not infer membership from company size, exchange, or reputation.

Nikkei 225Nikkei · JPX: 6857currentEvidence
Effective
Sep 1, 2026
Removal
Not stated
Announced
Not stated
Last verified
Sep 2, 2026
Verification
exchange verified
Source
Nikkei Indexes official Nikkei 225 components page
TOPIXJapan Exchange Group · JPX: 6857currentEvidence
Effective
Jul 31, 2026
Removal
Not stated
Announced
Not stated
Last verified
Sep 2, 2026
Verification
exchange verified
Source
JPX official TOPIX component file

As of Sep 22, 2026. Rights-filtered public evidence only; no redistribution or model training is granted.

Only source-backed memberships with an explicit public redistribution basis are returned.

Governance

Board leadership, management, committees and their disclosed responsibilities.

Canonical AEGIS identity graph

Executive leadership

Current, confirmed roles are shown only when both the person Profile and supporting source record satisfy the public projection boundary. A missing role is not evidence that it does not exist.

Executive team

0 public records

Executive roster coverage is NOT_ASSERTED. An empty list is not evidence that this company has no executive team.

Governance leadership

Boards & Committees

Board and committee assignments appear only when the canonical public projection retains a current role and supporting source. Unpublished records are not interpreted as absence.

Record as of Sep 22, 2026. Chair, executive office, Lead Independent Director and committee appointments retain their separate source roles. A complete board composition denominator and committee charters are not established by a partial roster.

Board roles

0 public records

Board roster coverage is NOT_ASSERTED. An empty list is not evidence that this company has no board.

Disclosure boundary

Governance and independence

Only current, confirmed leadership roles with public evidence are included in the canonical projection.

RecordStatusAuthorityEffective

Absence of a leadership role, committee, or disclosure is not evidence that it does not exist.

Investors & capital: coverage notes

Ownership, funding and dated financial information.

Ownership disclosures retain their reporting dates and source types. Economic ownership, investment discretion and voting authority are distinct. Activism and settlement-dated short interest are not established by holdings or short-sale volume.

Risk & assurance: coverage notes

Disclosed coverage, ratings and assurance scope.

Credit-rating evidence, where published, appears in the Governance and Basis sections with its source and reporting date. Insurance coverage, cyber ratings and assurance reports require their own issuer, scope, date and usage rights. Indemnification does not establish insurance coverage.

Ecosystem

Published relationships and related records.

Connections

Explore the roles, education and affiliations published in this record.

No public connections are published in this record yet.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · canonical_identityAlpha canonical company public projectionSupports Company identity, Published leadership, Entity status boundary. Reviewed Sep 22, 2026.Open source

Basis

Identifiers, sources and record limitations.

Identifiers

Alpha ID
alpha:company:319a5805-79e3-4c32-9ac1-e561e24f3653
Record version
public-1

Sources

Sources and published information

Published evidence records

3 evidence records, matching Agent View. Records may refer to different locations or observations in the same document. This count is not a count of independent corroborating sources.

  1. Alpha canonical company public projection

    canonical identity · Source published: Date unavailable · Retrieved: Sep 22, 2026

    Supports 4 claims
    • Legal Name: ADVANTEST CORP · Claim reviewed: Sep 22, 2026
    • Entity Status: Public listing published · Claim reviewed: Sep 22, 2026
    • Published Fact: US · Claim reviewed: Sep 22, 2026
    • Published Fact: JP · Claim reviewed: Sep 22, 2026

  2. Nikkei 225

    index provider · Source published: Date unavailable · Retrieved: Sep 2, 2026

    Supports 1 claim
    • Index Membership: Nikkei 225 (N225) · Claim reviewed: Sep 22, 2026

  3. TOPIX

    index provider · Source published: Date unavailable · Retrieved: Sep 2, 2026

    Supports 1 claim
    • Index Membership: TOPIX (TOPX) · Claim reviewed: Sep 22, 2026