All open datasets
Explore open, documented datasets for analysis and machine learning, with clear licences, JSON API access, and Parquet downloads.
1 dataset
Every dataset here is published as immutable Apache Parquet versions with a documented column schema, column profiles, an explicit licence and a named publisher. Read the schema and a sample of real rows without an account; sign up free to run bounded JSON queries or download the whole snapshot for training, backtesting or analysis. Agents can do the same over the Model Context Protocol at /api/mcp, or read /llms-full.txt for the whole catalogue in one file.
Mostly Right6 Nov 2026, 11:14:50 UTCUS stocks and ETFs, prices and SEC fundamentals since 2010
- 28.0M rows (estimated)
- 2,638 views
- 460 uses. Uses include downloads and successful API/MCP queries
