Variant of NAICS 2012 - Energy sector

All examples - 523110 - Investment banking and securities dealing^US

commercial paper dealing (acting as a principal in dealing securities to investors)
government bond underwriters
investment banking
investment banking and securities dealing
making markets for securities
securities distributing (acting as a principal in dealing securities to investors)
securities floor traders (acting as a principal in dealing securities to investors)
securities flotation companies
securities originating (acting as a principal in dealing new securities to investors)
underwriters, securities