🇰🇷 Korea DART OpenDART — KOSPI & KOSDAQ Filings

Korea's SEC EDGAR equivalent — institutional disclosures from every KOSPI, KOSDAQ, and KONEX issuer, delivered as clean JSON.

DART (전자공시시스템 — Korea Financial Supervisory Service's electronic disclosure system) is the legal source-of-record for every Korean listed company. This actor wraps the official OpenDART REST API so you can pull issuer filings, major-event reports, capital changes, and M&A disclosures by date range, issuer, or category without writing any glue code.

• ✅ Official FSS open-data API — full corpus, not a scraper
• ✅ KOSPI + KOSDAQ + KONEX coverage
• ✅ Korean-language original content preserved (corp_name, filing titles)
• ✅ English company names where the issuer registered them
• ✅ Filter by date range, issuer (corp_code or name), and filing category
• ✅ Bring-your-own free OpenDART auth key (per FSS Terms of Service)

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What you get

Each filing record contains:

Field	Description
rcept_no	DART receipt number (unique 14-digit ID for the filing)
corp_code	DART's 8-digit internal company code
corp_name	Korean company name (e.g. 삼성전자)
corp_name_en	English company name when available (e.g. SAMSUNG ELECTRONICS CO.,LTD)
stock_code	6-digit KRX stock code (e.g. 005930)
filing_title	Filing title in Korean (e.g. [기재정정]사업보고서)
filing_type_classified	Heuristic category: regular_report, major_event, M&A_ownership, capital_change, audit_report, other
filing_type_code	OpenDART category code: A/B/C/D/...
filing_date	YYYYMMDD filing date
market_segment	KOSPI, KOSDAQ, KONEX, or ETC
opendart_url	Direct human-readable link to the filing on dart.fss.or.kr
filing_summary	Pre-formatted one-line summary suitable for alerts

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Use cases

• Korean equity event-driven traders — monitor M&A filings, tender offers, major-event reports (주요사항보고서) within minutes of disclosure
• Activist / hedge fund Asia desks — track 5%+ ownership filings (대량보유보고서) and insider transactions (임원·주요주주특정증권등소유상황보고서)
• Compliance / KYC analysts — pull regular reports (사업보고서, 분기보고서, 반기보고서) on KOSPI200 / KOSDAQ150 constituents for due diligence
• Macro researchers — monitor capital-raise activity, convertible bond issuance (전환사채), and rights offerings (유상증자) for liquidity-cycle signals
• Foreign investor research — Korean-equity research without paying for Refinitiv Eikon Korea or Bloomberg Korea-Country-Pack

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Input

Field	Required	Default	Notes
opendart_api_key	yes	—	Your personal free key from opendart.fss.or.kr. Treated as a secret.
corp_name_filter	no	""	Substring match on Korean company name. Example: 삼성.
corp_code_filter	no	""	DART 8-digit corp code. Example: 00126380 (Samsung Electronics).
filing_type	no	all	regular_report / major_event / capital_change / M&A / all
date_from	no	30 days ago	ISO date YYYY-MM-DD
date_to	no	today	ISO date YYYY-MM-DD
max_filings	no	100	Cap (1–1000).

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How to get a free OpenDART key (60 seconds)

1. Open https://opendart.fss.or.kr/uss/umt/cmm/EgovMberInsertView.do
2. Click 회원가입 (Sign Up) — give email, name, organization. No payment, no credit card.
3. Confirm via the verification email.
4. Log in → 인증키 신청/관리 (API key request) → submit application — keys are auto-approved in seconds.
5. Paste the 40-char crtfc_key into the opendart_api_key input field.

Why we don't supply a shared key: OpenDART's Terms of Service §5 require each downstream consumer to register their own key. Sharing keys would (1) violate ToS, (2) hit the 20,000/day cap quickly with multiple users on one key, and (3) make rate-limit debugging impossible. Each NexGenData buyer using their own key gets the full 20,000-call/day quota.

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Rate limit

OpenDART enforces 20,000 API calls per key per day (resets at 00:00 KST). This actor:

• Paginates list.json at 100 results per page (so 100 filings = 1 API call)
• Stops at 19,900 calls as a local guard (leaves headroom for incidental calls)
• Surfaces OpenDART's status 020 (quota exceeded) cleanly in the output dataset rather than crashing

Worst-case math: a year-long full-corpus sweep (~3,000 filings/day × 365 ≈ 1.1M filings) needs ~11,000 calls — well under the 20K daily cap. Most use cases consume <100 calls/run.

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Example output (one row)

{
  "rcept_no": "20260530000234",
  "corp_code": "00126380",
  "corp_name": "삼성전자",
  "corp_name_en": "SAMSUNG ELECTRONICS CO.,LTD",
  "stock_code": "005930",
  "filing_title": "[기재정정]사업보고서 (2025.12)",
  "filing_type_classified": "regular_report",
  "filing_type_code": "A",
  "filing_date": "20260530",
  "filer_name": "삼성전자",
  "market_segment": "KOSPI",
  "opendart_url": "https://dart.fss.or.kr/dsaf001/main.do?rcpNo=20260530000234",
  "filing_summary": "삼성전자 (KOSPI) — [기재정정]사업보고서 (2025.12)"
}

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OpenDART category codes (pblntf_ty) reference

Code	Korean	English
A	정기공시	Regular reports (annual, quarterly, semi-annual)
B	주요사항보고	Major-event reports (material disclosures)
C	발행공시	Capital changes / securities issuance
D	지분공시	Ownership / 5%+ shareholder / tender offer
E	기타공시	Other
F	외부감사관련	External audit
G	펀드공시	Fund
H	자산유동화	Asset securitization
I	거래소공시	Exchange (KIND mirror)
J	공정위공시	KFTC (Korea Fair Trade Commission)

The filing_type input maps regular_report → A, major_event → B, capital_change → C, M&A → D. Choose all to fetch every category.

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한국어 설명

한국 금융감독원의 DART(전자공시시스템)에서 KOSPI 및 KOSDAQ 상장 기업의 공시 정보를 수집합니다. 정기 보고서, 주요 사항 보고서, M&A 공시 등을 한국어 원본 그대로 구조화된 데이터로 제공합니다.

주요 용도:

• 한국 주식 시장 이벤트 모니터링
• 코퍼레이트 거버넌스 분석
• M&A 트래킹
• 외국인 투자자 정보 분석

필수 입력

• opendart_api_key — OpenDART에서 발급받은 본인의 인증키 (무료, 가입 후 즉시 발급). 본 액터는 ToS 제5조에 따라 공유 키를 제공하지 않으며, 각 사용자가 본인의 인증키를 등록해야 합니다.

선택 입력

• corp_name_filter — 회사명 부분 일치 검색 (예: 삼성, 현대, 카카오)
• corp_code_filter — DART 고유번호 (8자리)
• filing_type — 공시 유형 필터
• date_from / date_to — 조회 기간 (기본 최근 30일)
• max_filings — 최대 결과 수 (기본 100)

사용량 제한

OpenDART는 인증키당 일일 20,000회 호출 제한이 있습니다. 본 액터는 안전 마진을 위해 19,900회에서 중단합니다.

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Related Actors — Asia-Pacific Disclosures Cluster

Cross-jurisdiction event-driven traders typically pair DART with:

Slug	Region	What it does
kospi-stock-screener	🇰🇷 Korea	KOSPI + KOSDAQ market-cap screener with foreign-ownership ratios
sgx-company-announcements	🇸🇬 Singapore	SGX (Singapore Exchange) corporate disclosure feed
sec-form-13f-tracker-pro	🇺🇸 USA	SEC Form 13F institutional-holdings tracker for cross-region overlay

Additional Korea + APAC cluster actors (currently private, publish queue): korea-kind-disclosures (KRX exchange-side announcements), hkex-news-announcements (Hong Kong Exchange). They will appear in this table once public.

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Legal posture

• DART filings are mandated public disclosure under FSCMA §159 (자본시장과 금융투자업에 관한 법률).
• OpenDART is FSS's official open-data wrapper (Public Data Portal API #15044596).
• No commercial-use restriction (OpenDART ToS §3 permits research, journalism, and commercial intelligence).
• Each consumer registers their own free auth key (OpenDART ToS §5).
• Rate limit: 20,000 calls/day per key.

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