This industry comprises establishments primarily engaged in acting as principals (investors who buy or sell on their own account), generally on a spread basis, in originating, underwriting and/or distributing issues of securities of businesses, governments and institutions. Establishments primarily engaged in making markets (dealing or trading) in securities are included.

This industry comprises establishments primarily engaged in buying or selling securities for others on a commission basis.

This industry comprises establishments primarily engaged in buying and selling spot or future contracts, such as commodities, foreign currency or futures options.

This industry comprises establishments primarily engaged in buying and selling commodity contracts and futures contracts for others on a commission basis.