About ko.io

SEC EDGAR is the public record of institutional positions, insider trades and corporate events in the United States. It is also raw XML and SGML spread across dozens of form types: amendments replace originals without clear versioning, CUSIPs have no ticker mapping, and XBRL financials use different tags across companies and years.

Each of those problems is solvable; solving all of them, and keeping them solved every filing day, is an infrastructure project. ko.io does that work once so researchers, developers and their agents can query the result directly.

Form 13F institutional holdings, Forms 3, 4, 5 and 144 insider filings, congressional trades disclosed under the STOCK Act, 13D/13G stakes, 8-K events, 10-K/10-Q financials, N-PORT fund holdings, fails-to-deliver and Reg SHO threshold lists, plus Treasury, Federal Reserve, BLS, CFTC, FDIC, EIA and OFR series. Each dataset's source, history, cadence and row count is listed on the dataset reference.

Scheduled pipelines download each source, parse it, validate it and load it into a columnar database. Data-quality tests (uniqueness, not-null, range, reconciliation) run on every build. Share classes are consolidated and managers that file under several CIKs are merged into one continuous portfolio.

Every SEC row keeps the accession number of the filing it came from. Nothing is estimated, interpolated or editorialized: no sentiment scores, no model-generated opinions.

The database runs as a three-replica cluster. The API is served from Stockholm and Singapore, and a Cloudflare Worker routes each request to the nearer region. The terminal, the REST API and the MCP server read the same tables. Current health and 90-day uptime are on the status page.

• Terminal: browse institutions, stocks, insiders and members of Congress in the browser. No account needed.
• REST API: 44 endpoints returning JSON, authenticated with an API key.
• MCP server: 24 tools for Claude, Cursor, Windsurf, Zed, Codex and other MCP clients.
• Playground: try API calls from the browser and export the results.

The free tier includes 200 API calls a day. Paid plans and their limits are on the pricing page.

Questions, partnerships or enterprise needs: admin@ko.io.

Privacy policy·Terms·GDPR