What is a securities agency?
10 OCT, 2025
A securities agency plays a crucial role in financial markets. It is an investment services company (ISC) that acts as an intermediary between investors and markets. Its function is not only to execute buy and sell orders for assets, but also to offer a regulated framework that provides security to market participants.
In addition, securities agencies help investors access a wide range of financial instruments and global markets efficiently, making them essential partners for professional investors seeking transparency, liquidity, and compliance with financial regulations. Their role in ensuring proper execution, safeguarding assets, and providing expert guidance makes them a cornerstone of modern investment strategies.
Next, we explore in detail the role and characteristics of a securities agency, aimed at the professional investor seeking to understand their services and the legal framework that regulates them.
Main functions of a securities agency
A securities agency is authorized by regulatory bodies to provide investment services. In the European landscape, this is the European Securities and Market Authority (ESMA) and its most relevant functions include:
- Intermediation in markets: execution of buy and sell orders for securities (stocks, bonds, derivatives) on behalf of clients. The agency acts as an intermediary between the investor and the market.
- Financial advice: some agencies offer investment advisory services, helping clients make informed decisions about their portfolios.
- Custody of securities: they manage and safeguard their clients' financial assets, ensuring that the acquired securities are properly registered and protected.
Differences between a securities agency and a securities company
Although the terms are sometimes used interchangeably, there are key differences between a securities agency and a securities company. The main one lies in the services they can offer:
- Securities agency: can only act as an intermediary, executing orders from its clients, but cannot operate on its own account or carry out investment activities for its own balance sheet.
- Securities company: in addition to intermediation functions, it has the ability to act on its own behalf, that is, it can make investments on its own account and assume direct risks.
For a professional investor, this distinction is key, as a securities company can offer greater possibilities for diversification and risk.
Regulation and supervision of securities agencies
Securities agencies are regulated by bodies such as the Financial Conduct Authority (FCA) in the United Kingdom, the Autorité des marchés financiers (AMF) in France, the Comissäo do Mercado de Valores Mobiliarios (CMVM) in Portugal or the European Securities and Markets Authority (ESMA) at the European level. These regulators impose strict transparency, capitalization, and solvency rules, ensuring that agencies act in the best interest of their clients and maintain a solid financial structure.
In addition, securities agencies must comply with directives such as the MiFID II (Markets in Financial Instruments Directive II), which sets standards in transaction transparency, investor protection, and conflict of interest reduction.
Additional services for professional investors
For professional investors, securities agencies offer more specialized services:
- Access to international markets: most agencies allow investors to access global markets, facilitating the purchase of assets in different jurisdictions.
- Algorithmic execution: some agencies offer algorithm execution, which uses automated systems to carry out transactions more quickly and efficiently, maximizing market opportunities.
- Market analysis and studies: advanced market analysis services, provided by internal or external analysts, that help the professional investor make informed decisions based on detailed data and trend projections.
Importance of transparency and risk management
For the professional investor, the relationship with a securities agency should be based on trust and transparency. Commission models, execution strategies, and asset custody are aspects that should be clear and agreed upon from the start. Likewise, proper risk management by the agency is essential, especially in contexts of high volatility or in the execution of complex operations.
The ability of the securities agency to ensure the proper execution of orders, minimize slippage (slippage), and manage risk exposure is a differentiating factor that can significantly influence the investor's profitability.
Examples of Leading Securities Agencies
Well-known securities agencies include Charles Schwab, Interactive Brokers, and Saxo Bank, which provide a broad range of investment services to professional investors worldwide. In Europe, firms such as Degroof Petercam, BNP Paribas Securities Services, and J.P. Morgan Securities serve as intermediaries, offering execution, custody, and advisory services. These examples demonstrate the diversity of services and global reach that professional investors can access through reputable securities agencies, highlighting their crucial role in facilitating efficient and secure market operations.
Conclusion
For professional investors, securities agencies offer secure and regulated access to global financial markets. Understanding their functions, distinguishing them from securities companies, and the regulatory framework that governs them is essential to make the most of their services.
When choosing a securities agency, it is crucial to evaluate not only the services offered, but also their ability to provide transparency, security, and a proactive approach to risk management.
