One sentence in a footnote can move a forecast. Weeks later, someone asks why the number changed.

SourceState keeps that trail: the filing, the calculation, the assumption and the decision. We build financial data and research tools for people who keep asking where a number came from.

Website · Open source · Reference

We're opening up the reusable parts of that work. Tools you can drop into your own notebooks, research workflows and data pipelines.

If they help you build something we haven't thought of, even better.

Every regulator has its own way of doing things. OpenCorpFilings gives you one Python API for SEC EDGAR, Companies House, EDINET, AMF/DILA and ESEF: original documents, text, tables and raw XBRL/iXBRL facts, with source IDs, dates and URLs still attached.

Built to run independently of the SourceState product. Use it in a notebook, a pipeline, or something completely different.

Repository · Documentation · Example notebooks

The wider product follows the trail into your model: new disclosures, the inputs they touch, and the decisions you review.

See the workflow in the product preview, explore the data foundation, or look at the JSON API in early access.

The ZIP inside a ZIP. The company that renamed itself. The footnote that makes a mess of your neat model. We'd like to hear about it.

Say hello and tell us what you're building, or what's getting in your way.