What Is a Securities Firm and How Does It Work?

A securities firm is a company that deals in various types of financial instruments, such as stocks, bonds, mutual funds, options, futures, and more. A securities firm can provide different services to its clients, such as trading, underwriting, research, portfolio management, and advice. A securities firm can also be called a broker-dealer, an investment dealer, or a financial intermediary.
There are many securities firms in the United States, ranging from large and well-known firms like Charles Schwab, Fidelity Investments, E*TRADE, and TD Ameritrade, to smaller and specialized firms that cater to specific niches or markets. Some securities firms operate online, while others have physical branches or offices. Some securities firms are affiliated with banks or other financial institutions, while others are independent.
How a Securities Firm Works
A securities firm typically has several departments that perform different functions and work together to serve the needs of its clients. These departments may include:
- Sales: This department is responsible for attracting and retaining clients, both individual and institutional. Salespeople may offer various products and services to their clients, such as stocks, bonds, mutual funds, insurance, etc. They may also provide advice and guidance on investment strategies and goals.
- Underwriting and Financing: This department is involved in creating and selling new securities issues, such as initial public offerings (IPOs), secondary offerings, bond issues, etc. Underwriters work with issuers (companies or governments) to determine the terms and conditions of the securities issue, such as the price, the amount, the timing, etc. They also market the securities to potential buyers, such as institutional investors or retail investors.
- Trading: This department executes trades on behalf of clients or for the firm’s own account. Traders buy and sell securities on various exchanges or over-the-counter (OTC) markets. They may also provide liquidity and price discovery to the markets. Traders may specialize in certain types of securities or markets, such as equities, fixed income, derivatives, foreign exchange, etc.
- Research and Portfolio Management: This department conducts analysis and research on various securities, markets, industries, sectors, etc. Researchers provide reports and recommendations to clients or internal users on various investment opportunities or risks. Portfolio managers manage the assets of clients or the firm according to certain objectives and strategies. They may use various tools and techniques to optimize the performance and risk of their portfolios.
- Administration: This department handles the operational and administrative aspects of the firm’s business, such as accounting, compliance, legal, human resources, technology, etc. Administrators ensure that the firm follows the rules and regulations of the industry and the government. They also provide support and infrastructure to the other departments.
A securities firm may charge fees or commissions for its products and services. The fee structure may vary depending on the type of product or service, the size of the transaction, the level of service provided, etc. Some common types of fees or commissions are:
- Trading commissions: These are fees charged for executing trades on behalf of clients. They may be based on a flat rate per trade or a percentage of the trade value.
- Underwriting fees: These are fees charged for creating and selling new securities issues. They may be based on a percentage of the total amount raised by the issue.
- Management fees: These are fees charged for managing the assets of clients or the firm. They may be based on a percentage of the total assets under management (AUM) or a fixed amount per year.
- Advisory fees: These are fees charged for providing advice or guidance to clients on their investment decisions. They may be based on a percentage of the assets advised or a fixed amount per hour.
Benefits and Risks of Working with a Securities Firm

Working with a securities firm can have several benefits for investors, such as:
- Access to a wide range of products