License

Aether Quant is under two licenses, by path. REUSE.toml in the repository maps every file.

	License	Covers
The library	Apache-2.0	everything the PyPI wheel and the dashboard image ship (aether_quant and the packages it re-exports, the aq CLI), the web UI, the notebooks, the docs, the examples and the Lean 4 proofs
The trading system	PolyForm Noncommercial 1.0.0	main.py, the trainers, the trained models and ml/, config.json, scripts/, the data, the research records and the backtests

So an institution can use, change and ship the library commercially under Apache-2.0, with its patent grant and the NOTICE file. The trading system stays noncommercial; a commercial license for it is available on request through the repository's GitHub page. Releases up to 6.6.4 were entirely under PolyForm Noncommercial.

Contributions take the license of the path they change (inbound equals outbound).