This major group includes investment trusts, investment companies, holding companies, and miscellaneous investment offices.

• Industry Group 671: Holding Offices
  • 6712 Offices Of Bank Holding Companies
  • 6719 Offices Of Holding Companies, Not Elsewhere Classified
  
  
• Industry Group 672: Investment Offices
  • 6722 Management Investment Offices, Open-end
  • 6726 Unit Investment Trusts, Face-amount Certificate Offices, And
  
  
• Industry Group 673: Trusts
  • 6732 Educational, Religious, And Charitable Trusts
  • 6733 Trusts, Except Educational, Religious, And Charitable
  
  
• Industry Group 679: Miscellaneous Investing
  • 6792 Oil Royalty Traders
  • 6794 Patent Owners And Lessors
  • 6798 Real Estate Investment Trusts
  • 6799 Investors, Not Elsewhere Classified