[Expanded Dataset - SEC Filings on ❄️ Marketplace] Cybersyn is building a Company Index to support joining companies, subsidiaries, and their brands together in a hierarchy. This is a persistent problem across companies and a major missing join key. Our recent SEC Filings release on Snowflake Marketplace marks a first, small, step towards building a reference spine which we refer to as our Company Index. We map our Company Index to public identifiers (e.g. CIKs, LEIs, EINs) and identifiers from market data providers (PermID, OpenFIGI). To start, we're working with public companies but this will soon extend 😃