In the helpfile I found two examples to get a list of industry-segments:
Take[FinancialData["DrugManufacturers-Major", "Members"], 20]
FinancialData["Publishing-Books", "Members"]
I would like to get a list of companies from different industrial area's. I tried several names like for example FinancialData["banks", "Members"]
with the same result: Missing["NotAvailable"].
Is there a list of industrie-segments available