Add to Exclusions "Business brockerage activities (i.e. arranging for the purchase and sale of small and medium-sized businesses, including professional practices) and patent brokerage activities (arranging for the purchase and sale of patents) are classified in 7499 (Other business activities n.e.c.)".
Reason:
This distinguishes activities of financial intermediation related to sale of stocks etc. from activities related to the brockerage (purchase and sale) of businesses and patents.