523999  Miscellaneous Financial Investment Activities 

This U.S. industry comprises establishments primarily engaged in acting
as agents and/or brokers (except securities brokerages and commodity
contracts brokerages) in buying or selling financial contracts and
those providing financial investment services (except securities and
commodity exchanges; portfolio management; investment advice; and
trust, fiduciary, and custody services) on a fee or commission basis.

The data published with NAICS code 523999 include these parts of the following
SIC industries:

     6099 (pt)  Deposit brokers
     6211 (pt)  Gas & oil lease & royalty brokers
     6289 (pt)  Oth services allied with the exchange of securities & commodities