GME dominates daily. Typically 80%+ buys.
What would be really useful is to know how many total shares are held by each broker and a total share bought and sold at that broker each day.
Here is a request for Fidelity to add that. https://www.reddit.com/r/Fidelity/comments/okgacq/please_list_number_of_shares_of_companies_held/
Any of you feel like going to fidelity reddit and uprooting it and commenting, that might help get attention.