Japan EDINET Ownership Change Feed

A deterministic feed of ownership-change events derived from Japan's EDINET large-shareholding disclosures (大量保有報告書 / 変更報告書 / 訂正報告書).

For each filing it reports who owns how much of which company, and how the holding changed since the previous effective disclosure — with source traceability back to the original EDINET document.

What you get

Each run emits normalized JSON events (one per ownership change) to the Actor's default Dataset:

{
  "event_type": "change",
  "issuer_name": "株式会社テストカンパニー",
  "issuer_code": "E05320",
  "holder_name": "黒田投資顧問",
  "previous_pct": 6.11,
  "current_pct": 7.02,
  "delta_pp": 0.91,
  "purpose_changed": false,
  "previous_purpose": "direct",
  "current_purpose": "direct",
  "filed_at": "2026-04-03",
  "document_type": "大量保有報告書",
  "source_doc_id": "S100NNCD",
  "previous_source_doc_id": "S099ZZ09",
  "correction_flag": false,
  "confidence": 0.92,
  "reporting_regime": "legacy",
  "taxonomy_version": "vh001",
  "cross_regime_comparable": true,
  "comparison_status": "directly_comparable",
  "calculation_basis": "aggregate_filing_group",
  "source_url": null,
  "event_summary_en": "Holder \"黒田投資顧問\" increased holding in \"株式会社テストカンパニー\" (issuer E05320) from 6.11% to 7.02% (+0.91pp) as of 2026-04-03."
}

Fields that cannot be reliably determined are reported as null rather than guessed: when no reliable prior holding can be linked, previous_pct, delta_pp, and purpose_changed are null and confidence is lowered.

When the previous and current filings use different XBRL regimes, the delta is reported arithmetically but flagged as not directly comparable:

{
  "event_type": "change",
  "reporting_regime": "revised_2026",
  "cross_regime_comparable": false,
  "comparison_status": "not_directly_comparable",
  "delta_pp_note": "Arithmetic delta across reporting regimes/taxonomy versions; not a directly comparable holding change."
}

Inputs

field	type	notes
from_date	YYYY-MM-DD	Filing-date window start (inclusive). Defaults to 30 days ago.
to_date	YYYY-MM-DD	Filing-date window end (inclusive). Defaults to today.
issuer_code	string	Optional EDINET issuer-code filter. Matches the document-list issuerEdinetCode exactly (case-insensitive). Omit (or use "") for all issuers.
limit	int (1–1000)	Maximum normalized events returned (default 200). Transparent output cap: the full document scan of the requested window always completes; when the cap is hit, run metadata reports complete=false, truncated=true, events_omitted=N.

EDINET API access: Authentication is handled by the Actor; users do not need to provide an EDINET API key.

Billing (Pay-Per-Event)

• Price: $0.10 per normalized ownership-change event (normalized-ownership-change-event).
• You are charged only for events actually emitted to the Dataset. A run that emits no events costs $0.
• You are not charged per page fetched or per compute second; compute and dataset usage are covered by Apify platform costs.
• A per-run cost cap (Run max cost) is enforced. When the spending limit is reached the run stops cleanly and reports spending_limit_reached=true.

Design principles

• Deterministic. Parsing, linkage, and delta are rule-based — no LLM in the critical path.
• Fail-closed. Unreliable or missing values are reported as null rather than guessed.
• Source-traceable. Every event carries source_doc_id back to the original EDINET filing.

Practical limitations

• Coverage is limited to EDINET 大量保有報告書 / 変更報告書 / 訂正報告書 (formCode + docTypeCode pairs). Other filing types are skipped.
• Historical previous-holding linkage requires a prior filing for the same issuer + filer; if none exists, previous_pct is null.
• Cross-regime (XBRL taxonomy) deltas are reported arithmetically but flagged as not directly comparable.
• No complete historical coverage is guaranteed beyond what EDINET discloses.

Data source / attribution

Data is derived from EDINET — Japan's Financial Services Agency disclosure system — large-shareholding filings. It is used under EDINET's terms of use. Retain attribution to EDINET and the original filing (source_doc_id, and source_url when available) in any redistribution.