523130  Commodity Contracts Dealing 

This U.S. industry comprises establishments primarily engaged in acting
as principals (i.e., investors who buy or sell for their own account)
in buying or selling spot or futures commodity contracts or options,
such as precious metals, foreign currency, oil, or agricultural
products, generally on a spread basis.

The data published with NAICS code 523130 include these parts of the following
SIC industries:

     6099 (pt)  Foreign currency exchange
     6221 (pt)  Commodity contracts dealing
     6799 (pt)  Commodity contract trading company