Every stock market transaction starts with a stockbroker — but what is a stockbroker, and why are they essential to investing? Whether you’re buying your first shares or actively trading global markets, understanding how stockbrokers work can help you choose the right provider, avoid unnecessary costs, and gain better access to investment opportunities. In this guide, we’ll explore the role of a stockbroker, the different types available, how they make money, and what to look for when selecting one.
What Is a Stockbroker?
A stockbroker is a licensed professional or regulated firm authorised to buy and sell securities on behalf of clients in financial markets. The stockbroker acts as the intermediary between an investor and the exchange or liquidity venue where a security is traded — providing the regulated access point that most investors require to participate in equity markets.
The definition has expanded over time. In its traditional form, a stockbroker was a human intermediary operating on or near an exchange floor, executing verbal or written orders from clients. In 2026, the term encompasses everything from that traditional relationship model to fully automated online platforms processing millions of retail equity orders daily.
What has remained constant across every iteration of the role is the underlying function: providing clients with regulated, accountable access to financial markets.
What Does a Stockbroker Do?
The core responsibilities of a stockbroker fall into three areas.
Order execution. When a client instructs a broker to buy or sell shares, bonds, ETFs, or other listed securities, the broker routes that order to the relevant market. This may occur on a recognised exchange — the New York Stock Exchange (NYSE), London Stock Exchange (LSE), Toronto Stock Exchange (TSX), or Australian Securities Exchange (ASX) — or through alternative venues such as electronic communication networks (ECNs) and dark pools.
Regulatory compliance. Stockbrokers operate within regulatory frameworks that set minimum conduct standards, capital adequacy requirements, and client money rules. Compliance obligations vary by jurisdiction but universally require brokers to act in clients’ interests, maintain accurate records, and submit to oversight from a recognised regulatory authority.
Market access. For the majority of retail investors, a licensed broker is the only lawful route to placing orders on major exchanges. Exchanges do not accept orders directly from unlicensed participants. The broker is, in this sense, a structural requirement of market participation.
Beyond these three functions, many brokers also provide research and analysis, portfolio reporting, tax documentation, and in some service models, personalised investment advice.
Types of Stockbroker: A Comparison
Not all stockbrokers serve the same purpose or client profile. The four principal categories differ significantly on cost, service depth, and execution model.
| Broker Type | Advice Provided | Typical Cost Model | Best Suited To |
| Full-Service Broker | Yes — personalised | Commission or AUM % | Investors seeking a managed relationship |
| Discount Broker | No | Low flat commission or free | Self-directed retail investors |
| DMA Broker | No | Commission + exchange fees | Active traders, professionals |
| Introducing Broker | Varies | Referral / revenue share | Clients onboarded via third parties |
Full-Service Brokers
Full-service brokers provide a relationship that extends well beyond order execution. Services typically include personalised investment advice, portfolio construction and management, financial planning, access to proprietary research, and dedicated account management.
This model commands higher fees — either through per-trade commissions or an annual fee calculated as a percentage of assets under management (AUM), typically ranging from 0.5% to 1.5% annually depending on portfolio size and service level. Full-service brokers remain relevant for investors who prefer a managed relationship and value access to institutional-quality research and advice.
Discount Brokers
Discount brokers execute orders at reduced or zero commission without providing personalised investment advice. The investor makes their own decisions; the broker provides the infrastructure to execute them.
The rise of online trading platforms from the late 1990s drove the discount model to dominance in retail markets. The subsequent shift to commission-free equity trading — led by US platforms from around 2019 — accelerated this further. Revenue models shifted toward payment for order flow (PFOF), currency conversion margins, and premium subscription tiers.
Observed participation data from retail equity markets suggests that the discount and online broker segment now accounts for the substantial majority of retail equity order volume in the US, UK, and Australia.
Direct Market Access (DMA) Brokers
DMA brokers route client orders directly to an exchange or liquidity venue without intermediary price intervention. Orders appear in the exchange order book under the client’s own presence, providing full transparency over fills, queue position, and market depth.
This model is associated with tighter effective spreads, faster execution, and precise control over order placement. DMA is primarily used by active traders, professional investors, proprietary trading firms, and institutional participants for whom execution quality has direct performance implications.
Introducing Brokers
An introducing broker (IB) manages the client relationship — onboarding, support, and sometimes guidance — while routing execution and clearing to a partner firm. The introducing broker does not hold client funds or handle settlement directly. This model is common in both retail and institutional segments, particularly where regional or specialist client relationships add value that a larger executing broker cannot efficiently service directly.
How Stockbrokers Are Regulated
Regulation is the foundation of broker credibility. It establishes conduct standards, protects client funds, and creates accountability mechanisms for investors if things go wrong.
United States
The Securities and Exchange Commission (SEC) oversees US securities markets broadly, setting rules on disclosure, market conduct, and investor protection. The Financial Industry Regulatory Authority (FINRA) directly regulates broker-dealer firms and their registered representatives. To operate as a stockbroker in the US, individuals must pass qualifying examinations — the Series 7 General Securities Representative Exam is the primary licence for brokers dealing in a broad range of securities.
United Kingdom
The Financial Conduct Authority (FCA) authorises and supervises investment firms, including stockbrokers. FCA-regulated brokers are subject to conduct of business rules, capital adequacy requirements, and mandatory client money segregation. Clients of FCA-authorised firms may be eligible for compensation under the Financial Services Compensation Scheme (FSCS) of up to £85,000 per eligible claimant in the event of firm failure.
Australia
The Australian Securities and Investments Commission (ASIC) licenses financial services providers including stockbrokers. Brokers must hold or operate under an Australian Financial Services Licence (AFSL). ASIC’s regulatory framework requires brokers to act efficiently, honestly, and fairly, and to maintain adequate financial resources.
Canada
The Canadian Investment Regulatory Organization (CIRO) — formed in 2023 through the merger of IIROC and the MFDA — regulates investment dealers and trading activity across Canadian equity and debt markets. Provincial securities commissions also play a role in setting conduct standards and licensing requirements.
Regulatory oversight does not eliminate market risk, but it establishes the minimum framework within which legitimate brokers operate — distinguishing them clearly from unregulated intermediaries.
How Do Stockbrokers Make Money? A Guide to Broker Fees
Understanding how a broker is compensated matters. Fee structures directly affect trading costs and can create incentive misalignments between broker and client.
Commission per trade. A flat or percentage fee charged each time an order is executed. Once the standard model across the industry; now less common at the retail discount level following the shift to commission-free trading in major markets.
Spread. The difference between the buy price and the sell price quoted by the broker. More prevalent in forex and CFD markets than in direct equity execution, where exchange-set bid-ask spreads are standard.
Assets under management (AUM) fee. An annual percentage of total portfolio value, used predominantly by full-service and wealth management brokers. Aligns broker revenue with portfolio growth but adds ongoing cost regardless of trading activity.
Payment for order flow (PFOF). The broker routes client orders to a designated market maker in exchange for rebate payments. The model is widely used in the United States and has been the subject of ongoing regulatory scrutiny. It is restricted or prohibited in the UK, EU, and Australia, where regulators have identified potential conflicts with best execution obligations.
Platform or subscription fees. A fixed monthly or annual charge for platform access, data feeds, or premium features. Common among professional and active trader platforms.
Custody and settlement fees. Charges for holding securities in a client account, processing dividends, or settling corporate actions. Often quoted separately from execution commissions.
For active traders, the cumulative effect of broker fees on net returns is substantial. Evaluating the full cost structure — not only the headline commission — is essential when selecting a broker.
Stockbroker vs Broker: What Is the Difference?
The terms are often used interchangeably but carry distinct meanings in formal contexts.
A stockbroker specifically facilitates the buying and selling of stocks and other exchange-listed securities on behalf of clients.
A broker is a broader term describing any intermediary that executes transactions on behalf of a client across financial markets — including forex, commodities, futures, options, and fixed income, in addition to equities.
All stockbrokers are brokers. Not all brokers are stockbrokers.
In practice, the distinction has become less sharp as multi-asset platforms have expanded the range of instruments accessible through a single account. A firm describing itself as a stockbroker may offer access to ETFs, bonds, and futures alongside equities. Equally, a multi-asset broker may provide equity access as part of a broader product set.
Do I Need a Stockbroker to Buy Shares?
To purchase shares listed on a recognised exchange — the NYSE, LSE, ASX, TSX, or any other regulated market — you need access through a licensed broker. Exchanges do not permit unlicensed participants to place orders directly in their systems.
In practice, this means opening an account with a regulated brokerage firm. That firm may be a traditional full-service broker, an online discount platform, or a DMA provider. The brokerage handles order routing, settlement, and custody of your securities.
The expansion of online brokerages has made this process significantly more accessible than it was in previous decades. Account opening, identity verification, and fund deposits can typically be completed digitally. However, the regulatory requirement for a licensed intermediary has not changed — the broker remains a structural necessity of exchange participation, regardless of how frictionless the onboarding process has become.
How Electronic Trading Has Changed the Stockbroker’s Role
The structural transformation of equity markets over the past 30 years has fundamentally altered what a stockbroker is and what they do.
Prior to electronic order matching — which began replacing open-outcry exchange floors from the 1980s and became dominant through the 1990s — all retail orders were routed through brokers who physically or telephonically communicated them to exchange floors. The process was slow, expensive, and opaque. Broker relationships were not optional; they were the only route to market.
The introduction of electronic matching engines, the proliferation of online platforms, and the compression of commissions to near zero across retail equity products have shifted a significant portion of execution from human intermediaries to automated systems.
The stockbroker role has effectively bifurcated as a result. At the retail level, the broker is primarily an infrastructure and compliance provider — a regulated platform through which investors execute their own decisions. At the professional and institutional level, the broker retains meaningful value in research quality, execution sophistication, market intelligence, and relationship management — particularly in less liquid instruments where access and execution quality are not commodities.
The emergence of DMA platforms, algorithmic execution tools, and co-location services has created a further tier serving active traders and professional market participants whose requirements sit between the retail and institutional segments.
How to Choose a Stockbroker: Key Evaluation Criteria
For investors assessing brokers, the following criteria tend to identify meaningful differences between providers.
Regulatory standing. Verify that the broker is authorised by a recognised regulator in your jurisdiction. Confirm that client funds are segregated and what investor compensation schemes apply.
Execution model. Understand whether the broker operates as agent (DMA or NDD) or principal (market maker), and what that means for your order fills.
Fee transparency. Request a complete breakdown of all costs — commission, custody, settlement, data, and any platform fees — before opening an account.
Market access. Confirm which exchanges and instruments are accessible. If you intend to trade across multiple asset classes, verify whether a single account can support this.
Platform quality. Assess whether the platform provides the data, order types, and analytical tools your strategy requires — on both desktop and mobile.
Research and support. For investors who value analysis, assess the quality and independence of the broker’s research output and the responsiveness of client support.
Tradeview Markets: Direct Market Access to Global Equity Markets
Tradeview Markets provides institutional-grade access to global stocks and multi-asset markets through a regulated brokerage infrastructure designed for serious trading activity.
For equity-focused participants, Tradeview offers dedicated platforms built around execution quality and market depth:
- EQView — a direct market access platform providing institutional-grade equity execution, full Level II market depth, and advanced order management tools for active equity traders.
- Sterling Trader — a professional DMA platform widely used by active traders and trading firms for high-speed equity execution across US markets.
Those interested in assessing platform execution and market access in a risk-free environment can register for a Tradeview demo account before committing capital.
FAQ
What is a stockbroker in simple terms?
A stockbroker is a licensed individual or firm that buys and sells shares and other securities on behalf of clients. They act as the regulated gateway between investors and stock exchanges, ensuring trades are executed and settled correctly.
What qualifications does a stockbroker need?
Requirements vary by jurisdiction. In the United States, brokers must pass FINRA licensing exams, including the Series 7. In the UK, brokers must hold FCA-recognised qualifications and meet ongoing competency standards. In Australia, brokers must hold or operate under an Australian Financial Services Licence (AFSL). In Canada, registration with CIRO and compliance with provincial securities requirements apply.
What is the difference between a stockbroker and a financial advisor?
A stockbroker executes trades in financial markets. A financial advisor provides broader guidance on investment strategy, financial planning, and wealth management. In regulated markets, these roles have different legal responsibilities. A financial advisor may use a stockbroker to execute transactions on behalf of a client, or both functions may be offered by the same firm.
How do stockbrokers make money?
Stockbrokers generate revenue through trading commissions, spreads on quoted prices, annual assets-under-management (AUM) fees, platform or subscription charges, and in some jurisdictions, payment for order flow (PFOF). Understanding which model applies to your broker is important because it affects both your total trading costs and the broker’s incentive structure.
Is a stockbroker the same as a trader?
Not necessarily. A stockbroker executes orders on behalf of clients. A trader, particularly a proprietary trader, buys and sells securities for their own account with the goal of generating returns from market movements. The roles can overlap, but they have different regulatory obligations and incentives.
Do I need a stockbroker to invest in shares?
Yes. To buy shares listed on a recognised stock exchange, you need access through a licensed broker. That broker may be a full-service firm, an online discount platform, or a DMA provider. The regulatory requirement for a licensed intermediary applies regardless of how simple the onboarding process has become.
What is the difference between a broker and a dealer?
A broker acts as an agent, executing trades on behalf of clients without taking ownership of the securities involved. A dealer acts as a principal, buying and selling securities from its own inventory. Many financial firms operate as broker-dealers, performing both functions depending on the instrument and market context.
How are stockbrokers regulated in the UK?
Stockbrokers in the UK must be authorised by the Financial Conduct Authority (FCA). The FCA sets conduct standards, capital adequacy requirements, and client money rules. Eligible clients of FCA-authorised firms may be protected by the Financial Services Compensation Scheme (FSCS), which currently provides compensation of up to £85,000 per eligible claimant if a firm fails.
What is best execution and why does it matter?
Best execution is the regulatory obligation requiring brokers to take all sufficient steps to achieve the best possible outcome for clients when executing orders, considering factors such as price, cost, speed, and likelihood of execution. It is a legal requirement in the UK under FCA rules derived from MiFID II and in the United States under SEC regulations. It matters because it helps ensure brokers prioritise client outcomes rather than routing orders in ways that primarily benefit the broker.
What is payment for order flow (PFOF)?
Payment for order flow (PFOF) is a practice where a broker routes client orders to a designated market maker in exchange for rebate payments. It is widely used in the United States but restricted or prohibited in the UK, European Union, and Australia, where regulators have raised concerns about potential conflicts with best execution obligations.
Can a stockbroker provide investment advice?
It depends on the broker’s regulatory permissions and service model. Full-service brokers authorised to provide advice have suitability obligations, meaning they must ensure recommendations are appropriate for a client’s circumstances and risk tolerance. Execution-only brokers do not provide advice and therefore do not have suitability obligations. This distinction is clearly defined within the regulatory frameworks of major financial jurisdictions.
What is a DMA broker?
A Direct Market Access (DMA) broker routes client orders directly to an exchange or liquidity venue without intermediary intervention in pricing. The client’s order appears in the exchange order book, providing full transparency over execution price, queue position, and market depth. DMA is primarily used by active traders and professional market participants who prioritise execution quality and transparency.