This industry comprises establishments primarily engaged in acting as principals (except investment bankers, securities dealers, and commodity contracts dealers) in buying or selling of financial contracts, generally on a spread basis. Principals are investors that buy or sell for their own account.

This industry comprises establishments primarily engaged in managing the portfolio assets of others on a fee or commission basis. These establishments have the authority to make investment decisions, with fees usually based on the size and/or overall performance of the portfolio. Examples of establishments in this industry are pension fund managers and mutual fund managers.

This industry comprises establishments primarily engaged in providing investment advice to others on a fee basis, provided that they do not also have the authority to execute trades. Establishments in this industry may communicate their advice both directly to their clients and via printed or electronic media as part of a subscription service. Establishments providing financial planning advice, investment counseling and investment research are included.

This industry comprises establishments, not classified to any other industry, primarily engaged in providing, on a contract or fee basis, miscellaneous financial investment services, such as trust, fiduciary and custody services, and other investment services. Establishments, such as note brokers, oil and gas lease brokers and stock transfer agents, are included.