Data sources and methods

Source

Korean filing data comes from OpenDART, the public API of the Financial Supervisory Service's DART system, used with attribution. English company names are the names registered with DART.

DataOpenDART API
Filing listsDisclosure search (list)
Supply contracts, preliminary earnings, insider reportsOriginal filing documents (document)
5% holder reportsMajor shareholding reports (majorstock)
Buybacks, share and bond issues, M&AMajor event report data
Financial summaries; growth, margin and debt rankingsKey accounts for multiple companies (fnlttMultiAcnt)
Employees, average pay, tenurePeriodic report data: staff (empSttus)
Director pay, individuals paid ₩500M or moreBoard pay (hmvAuditAllSttus), individual pay (indvdlByPay)
DividendsDividend data (alotMatter)
Largest shareholderLargest shareholder (hyslrSttus)
Audit opinionAuditor and audit opinion (accnutAdtorNmNdAdtOpinion)

Annual report figures come from the latest fiscal year's business report and move to the new year after reports arrive at the end of March. Average pay and tenure that a company reports by division or sex are combined, weighted by headcount.

US filings

US data comes from the Securities and Exchange Commission's EDGAR system. SEC public information may be reused with attribution. This site is not affiliated with or endorsed by the SEC.

DataSEC EDGAR
US insider tradesForm 4 (about 1,000 of the largest companies, last 12 months)
Investor portfoliosForm 13F-HR (20 investors, last eight quarters)
US current reportsForm 8-K (item numbers from each company's filing list, last 12 months)
US annual results and dividendsXBRL frames (revenue, operating income, net income, EPS, dividends per share)
US industry and fiscal year endCompany submissions

Korean won conversions of US amounts use ECB euro reference rates and are approximate.

Methods

  • Only facts are extracted: numbers, dates and short labels. Companies' own descriptive text is not copied or translated.
  • Extracted numbers are re-checked automatically. For example, if contract value ÷ recent revenue does not match the stated percentage, the numbers are hidden and only the filing title is shown.
  • From insider reports only the role and the trades are used. Personal details such as dates of birth are not collected.
  • Amended filings are labelled and left out of the highlights.
  • Data is updated at least once a day, so very recent filings may not appear yet.

Where a number differs from the original filing, the original prevails. Every card links to the original filing on DART (in Korean) or the SEC. Please report any error you find.