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. Investment banking and securities dealing, securities brokering, commodity contracts dealing, or commodity contracts brokering--are classified in Industry Group 5231, Securities and Commodity Contracts Intermediation and Brokerage; Acting as principals (except investment bankers, securities dealers, and commodity contracts dealers) in buying or selling financial contracts--are classified in Industry 523910, Miscellaneous Intermediation; Furnishing physical or electrical marketplaces for the purpose of facilitating the buying and selling of securities and commodities--are classified in Industry 523210, Securities and Commodity Exchanges; Managing the portfolio assets (i.e., funds) of others--are classified in Industry 523920, Portfolio Management; Providing customized investment advice--are classified in Industry 523930, Investment Advice; Providing trust, fiduciary, and custody services to others--are classified in U.S. Industry 523991, Trust, Fiduciary, and Custody Activities; and Financial transactions processing, reserve, and clearinghouse activities--are classified in Industry 522320, Financial Transactions Processing, Reserve, and Clearinghouse Activities.