Hivemind universes allow users to define custom sets of companies and the time periods during which those companies are active. By specifying tickers with optional start and end dates, users control which companies are in the universe and when.
Universes are used when generating company exposures and running pipelines to control which companies are included.
Universes can be explored, created, customized, and downloaded in the ForecastOS UI, where users can visualize active company counts over time.

curl -X PATCH "https://app.forecastos.com/api/v1/universes/<UNIVERSE_ID>" \
-H "Authorization: Bearer YOUR_API_TOKEN" \
-F "companies_csv=@<PATH_TO_COMPANIES_CSV>"
This updates the companies in the universe using the provided CSV file. Click here to download an example CSV.
Let's explore Hivemind Risk Applications next.