A modern investor can open a brokerage account on a phone, deposit money electronically and purchase part of a listed company within minutes. The process feels direct enough that the broker can almost disappear from view. Tap “buy,” receive a confirmation and the shares appear in the account. Behind that simple transaction sits an industry that has spent several centuries changing how investors reach securities markets. Brokers were once individuals physically carrying orders between customers and trading rooms. Later they became members of tightly controlled exchanges, then branch based financial firms, telephone execution services, discount brokers and finally online platforms processing enormous numbers of electronic orders.
The broker’s fundamental function has changed less than the technology around it. Investors generally need an intermediary capable of accepting an order and arranging its execution in a market. What changed was the cost of performing that function, the amount of information brokers controlled and the services bundled together with execution. A nineteenth century stockbroker could provide information, advice and market access because ordinary investors had few alternatives. A modern investor can obtain prices, company filings, analyst estimates and trading tools independently, forcing brokers to compete increasingly on cost, platform quality, execution, asset availability and convenience.
Brokers Existed Before Formal Stock Exchanges
Stockbrokers emerged because securities markets needed intermediaries before they needed elaborate trading technology. Early European governments and commercial companies issued transferable financial claims, creating buyers and sellers who had to find one another. In seventeenth century London, this activity occurred partly in coffee houses where merchants, investors and intermediaries gathered to exchange information and negotiate transactions. The broker’s value came largely from connections. Someone wanting to sell an investment did not have an electronic order book containing thousands of potential buyers. They needed somebody who knew who might take the other side.
The London Stock Exchange’s historical record dates one important stage to 1698, when John Castaing began publishing prices for stocks, commodities and currencies at Jonathan’s Coffee House. Quotations made the market more observable, but trading remained a human activity. Brokers and dealers gathered where potential counterparties could be found and information circulated. The eventual stock exchange developed from this community rather than appearing as a fully formed institution.
The distinction between a broker and a dealer also began to matter. A broker primarily arranged a transaction for somebody else, typically earning a commission. A dealer bought and sold securities for its own account, attempting to profit from the difference between buying and selling prices. Many financial firms would later perform both functions, producing the modern term “broker dealer.” In early markets the practical boundary was less neat, but the economic distinction remains relevant today. An online broker may route a customer’s order to another venue, while a market maker or affiliated dealer may actually provide the liquidity against which that customer trades.
London’s informal system gradually became more organised. The London Stock Exchange records the opening of a formal club called “The Stock Exchange” in Sweeting’s Alley in 1773. A purpose built exchange followed in Capel Court in 1802. The coffee house intermediary had started becoming a recognised financial profession operating inside rules created by an organised marketplace.
New York Brokers Created Their Own Trading Club
A similar process occurred in the United States. Following the creation of federal government debt after the American Revolution, securities trading in New York increased. On May 17, 1792, twenty four stockbrokers signed the Buttonwood Agreement. The agreement established rules governing transactions between the participating brokers and included fixed commission arrangements. The New York Stock Exchange traces its formal origins to this agreement, which eventually developed into the organisation now known as the NYSE.
The Buttonwood arrangement illustrates how important trust was to early brokerage. Securities settlement depended on counterparties honouring agreements, while reliable information was difficult to obtain. Restricting transactions to a recognised group of brokers reduced some counterparty uncertainty. Membership also gave brokers privileged access to the market. An ordinary investor did not walk onto an exchange floor and negotiate directly with whoever happened to be selling stock. Orders passed through people permitted to trade there.
Fixed commissions became another defining feature. Brokers did not compete freely by continuously cutting transaction prices. Exchange members operated under commission schedules that remained part of the American securities industry for more than a century. This made brokerage a valuable gatekeeping business. Access to the exchange itself had economic value, and that value was reflected in the price of exchange membership or a “seat.”
The American market did not consist only of the NYSE. Securities in newer and more speculative businesses were also traded by brokers operating outside the main exchange. So called curbstone brokers conducted business outdoors in New York, dealing in mining, petroleum, railway and industrial securities. The market that eventually became the American Stock Exchange grew partly from these street brokers. An NYSE historical timeline records curbstone brokers dealing in developing companies during the nineteenth century before eventually moving into a permanent building in 1921.
The Telegraph and Stock Ticker Changed What Brokers Knew
Nineteenth century brokerage was constrained by communication speed. Prices established in New York were not instantly known in another city. An investor outside the financial centre depended heavily on correspondents, newspapers and local brokerage offices for information. The telegraph changed this relationship by allowing financial information and trading instructions to move far faster than physical messengers.
The stock ticker pushed the change further. The NYSE dates the introduction of the ticker to 1867 and describes it as a major improvement in the transmission of market prices across the United States. Instead of waiting for a newspaper or handwritten message, brokerage offices could receive recent trading information on a paper tape. Prices were still slower and much less complete than a modern real time feed, but the geographical gap between Wall Street and investors elsewhere had begun to narrow.
Brokers benefited from the technology because it allowed them to serve customers farther from the exchange. Branch offices could maintain connections with central trading desks and transmit customer orders back to New York. Telephone networks later accelerated the same process. The broker remained necessary, but customers no longer needed to be physically close to the market. That change created the basic structure used by twentieth century brokerage firms: investors dealt with local representatives, while the actual exchange membership and execution machinery remained concentrated elsewhere.
Full Service Brokerage Became the Dominant Retail Model
By the early twentieth century, brokerage firms increasingly combined market access with investment recommendations, research and account administration. The “stockbroker” was not simply somebody who passed an order to an exchange. Brokers cultivated relationships with clients, discussed individual companies and often suggested which securities to buy or sell. Because reliable financial information remained costly and relatively difficult for individuals to obtain, this advisory function had substantial value.
The commission model reinforced that relationship. A broker was generally paid when the customer traded. More transactions therefore generated more revenue, creating an obvious conflict between advising a client and earning transaction based compensation. The industry eventually developed suitability standards and supervisory rules partly to address these incentives, but the basic tension remained. Brokerage firms could provide genuinely useful information while still having a commercial reason to encourage activity.
The 1929 market crash and subsequent Great Depression changed the regulatory environment considerably. In the United States, the Securities Exchange Act of 1934 established federal oversight of securities exchanges and broker dealers and created the Securities and Exchange Commission. The SEC’s current broker dealer regulatory overview still identifies the 1934 Act as the central federal law governing brokers, dealers and securities market operations.
Industry self regulation also became more formal. The National Association of Securities Dealers, predecessor to today’s FINRA, registered as a national securities association in 1939. Brokerage was becoming a heavily regulated profession rather than simply membership in a private trading club.
Brokerage Firms Became Custodians as Well as Order Takers
The twentieth century broker acquired another important function: holding customer assets. Investors increasingly maintained securities and cash inside brokerage accounts rather than personally receiving paper certificates after every transaction. That made investing much easier, but it also meant a broker failure could threaten customer property if records or custody arrangements were inadequate.
This became painfully obvious during the securities industry’s paperwork crisis of the late 1960s. Trading volume increased faster than many brokers’ administrative systems could handle. Firms struggled to process certificates and maintain accurate records. According to the Securities Investor Protection Corporation’s history, hundreds of broker dealers were merged, acquired or forced out of business during the period from 1968 to 1970, with some unable to meet obligations to customers.
Congress responded with the Securities Investor Protection Act of 1970, creating SIPC. The organisation does not protect customers against normal investment losses, but it provides a framework for restoring eligible securities and cash when a member brokerage fails and customer property is missing. Current SIPC protection can cover eligible customer securities and cash up to statutory limits, including a separate cash limit. The development reflected how the broker’s role had expanded. Investors were no longer using firms solely for occasional execution. Their broker had become an important financial custodian.
Fixed Commissions Protected the Traditional Brokerage Model
For most of the history of organised American securities markets, commissions were not freely negotiable in the way modern trading fees are. Exchange rules established rates, protecting brokerage firms from aggressive price competition. A client could choose between firms based on service, reputation and research, but transaction charges were constrained by the industry’s fixed commission structure.
This supported the economics of full service brokerage. Relatively high trading commissions helped pay for branch offices, account representatives, research departments and other services. Investors effectively purchased execution and advice together, whether they needed both or not. A customer who had already decided exactly which shares to purchase still paid within the established commission framework.
Institutional investors increasingly challenged this arrangement as their order sizes grew. The SEC spent years examining whether fixed commissions remained justified as markets became larger and more competitive. Negotiated rates began to appear for very large transactions before the system was removed more broadly. The eventual change would prove far more important than a simple reduction in fees. It allowed an entirely different type of brokerage firm to compete.
May Day 1975 Created the Modern Discount Broker
On May 1, 1975, fixed commission rates on US exchange transactions were abolished. The SEC’s 1975 annual report described Rule 19b-3, adopted earlier that year, as ending a fixed commission practice that had existed on American securities exchanges for more than 175 years. From that point, brokers could compete much more directly on the amount charged to execute a trade.
This created the economic conditions for discount brokerage. Instead of bundling execution with extensive personal advice and research, a firm could provide fewer services and charge substantially less for transactions. Charles Schwab became one of the firms most closely associated with this model. Schwab had established a brokerage operation in 1973, but commission deregulation allowed it to reduce rates across exchange traded securities and market itself much more aggressively as a lower cost alternative. Charles Schwab later described 1975 as the year it opened a discount brokerage designed to broaden lower cost access to investing.
The change weakened one of the broker’s oldest advantages: control over the price of market access. Customers who wanted advice could still use full service firms, but investors capable of making their own decisions no longer needed to pay the same type of commission. Brokerage had started separating into two businesses. One sold financial guidance and relationships. The other concentrated on efficient execution.
London Had Its Own Brokerage Deregulation
Britain underwent a comparable, although later, transformation. Traditional London securities trading maintained strict distinctions between brokers, who represented customers, and jobbers, who made markets in securities. Commission structures and exchange membership rules protected the existing system from some forms of outside competition.
That changed during the financial deregulation known as the Big Bang in October 1986. The London Stock Exchange’s history describes the period as the deregulation of the market and the replacement of the traditional floor based system with computerised trading. Fixed commission practices were removed, ownership restrictions changed and the separation between brokers and market making firms was weakened.
The consequences went well beyond lower transaction fees. Large banks acquired brokerage and market making operations, producing integrated securities firms capable of dealing, advising and underwriting within much larger organisations. Screen based trading also reduced the importance of physical presence on the exchange floor. London’s transformation followed the same broad direction visible in the United States: protected intermediary structures were being replaced by more competitive firms using technology to process greater trading volume at lower marginal cost.
Personal Computers Started Removing the Human Broker
Discount brokerage still initially depended heavily on telephone calls. An investor might research a company independently but would normally telephone the brokerage firm to enter an order. The representative typed the instructions into an internal system, which transmitted them toward an exchange or market maker. Removing personalised investment advice lowered costs, but a human being still sat between the customer and the electronic market infrastructure.
Personal computers began removing that step during the 1980s. Some brokers created proprietary systems that customers could access through dial up connections. The SEC reported that several firms offered personal computer order entry during that decade and that at least 70,000 customers were using these services by 1990. Electronic retail trading therefore predates the public internet boom.
E*TRADE traces its origins to TradePlus, founded in 1982 by William Porter and Bernard Newcomb. The company’s history records an electronically transmitted retail trade using its technology on July 11, 1983. This was not yet internet brokerage in the modern browser based sense. Customers used proprietary computer connections rather than simply opening a website. The importance was that order entry had begun moving from conversations with brokers into software.
Once customers could type their own orders, the brokerage industry’s labour requirements changed. A firm could process more customers without employing a corresponding number of registered representatives to answer telephones. That created the cost structure needed for the next major reduction in commissions.
Internet Brokerage Changed Retail Investing in the 1990s
The public internet turned electronic brokerage from a specialist service into a mass market product. The SEC records the introduction of internet based brokerage systems in 1995. Growth was extremely rapid. Its study of online brokerage reported 3.7 million US online accounts in 1997 and approximately 9.7 million by the second quarter of 1999. Daily online trading volume had risen from fewer than 100,000 trades in the second quarter of 1996 to more than half a million three years later.
Costs fell alongside adoption. SEC officials estimated in 1999 that average online commissions had declined by roughly 70% in only two years, from around $53 per trade to approximately $16. The regulator counted around 160 online broker dealers at the time, accounting for more than one third of retail customer trades. Brokerage was beginning to look less like a professional relationship and more like an internet utility.
This changed investor behaviour as well as broker economics. Customers had instant access to quotations, charts, company announcements and financial news that previously flowed primarily through professional terminals or brokerage offices. Investors could research independently and place a transaction immediately after reaching a decision. For the first time on a large scale, market information and market execution were arriving through the same consumer screen.
Online Trading Still Did Not Give Investors Direct Exchange Access
One misconception appeared almost immediately. Because the investor typed an order directly into a browser, online trading felt as though the customer had obtained a direct connection to the stock exchange. That was generally not what happened. The broker still received the customer’s instructions and decided where the order should be routed for execution.
The SEC was already addressing this misunderstanding during the late 1990s. It explained that clicking an online buy or sell button sends an instruction to the brokerage firm, which must then route that order into the market. The interface had removed the telephone conversation, not the intermediary.
That distinction remains important. A modern broker can send an order to an exchange, an electronic communication network or a wholesale market maker. It may also internalise transactions in some circumstances. The SEC’s explanation of trade execution and order routing describes these different destinations and the broker’s continuing obligation to seek best execution.
Modern stock brokers therefore remain intermediaries even though their presence is less visible. Much of their work has moved from a person speaking on the telephone into routing algorithms and automated infrastructure.
The Dot Com Boom Accelerated the Online Broker Model
The late 1990s bull market provided ideal conditions for internet brokers. Technology shares were producing dramatic price movements, initial public offerings received widespread attention and financial websites made market discussion available throughout the day. Online trading became part of the broader enthusiasm surrounding internet commerce.
Competition forced traditional firms to respond. Full service brokers developed online platforms while discount firms added research, charting, retirement accounts and other services previously associated with more expensive providers. The distinction between a full service broker and a discount broker became less obvious. Investors could obtain considerable research and account functionality from relatively inexpensive platforms without paying for a dedicated human adviser.
The internet also created new operational problems. Rapid increases in traffic overloaded trading systems, leaving customers unable to log in or execute orders during volatile periods. The SEC’s examinations of online firms around 2000 highlighted complaints involving delayed orders, inaccessible accounts and execution errors. It reminded brokers that moving transactions online did not remove obligations concerning system capacity, advertising, account security and best execution.
The online broker was cheaper than the traditional branch based model, but it was also becoming a technology company. Reliability of servers, data feeds and software now mattered almost as much as the quality of the firm’s registered representatives.
Decimalisation Reduced Another Source of Trading Cost
Trading costs fell further when US stock markets abandoned fractional quotations. American shares had historically been quoted using fractions of a dollar, often in increments such as one sixteenth. The markets completed the transition to decimal prices in April 2001, allowing quotations in pennies.
The SEC found that the move substantially narrowed quoted spreads in many securities. Its initial research indicated that spreads in highly active stocks declined considerably after penny pricing was introduced. The effect mattered to brokers because explicit commissions are only one part of transaction cost. Investors also pay indirectly through the difference between available buying and selling prices.
Decimalisation increased pressure on dealers that had historically earned wider spreads from market making. Brokerage economics were becoming more complicated. Investors expected ever cheaper execution, but firms still required revenue to maintain platforms, customer service, regulatory compliance, market data and custody systems. That pressure encouraged brokers to develop other revenue sources such as margin lending, interest income, securities lending and payments related to order routing.
The later move to zero commission trading therefore did not mean brokerage became economically free. It meant firms found ways to earn revenue somewhere other than an explicit charge attached to every stock trade.
Mobile Apps Changed the Meaning of an Online Broker
The smartphone brought the next major distribution change. Desktop online brokerage had already allowed investors to bypass human order takers. Mobile apps removed the need to sit at a computer. Account opening, deposits, research and execution could now take place through the same device used for everyday communications.
Robinhood became strongly associated with the next stage. Founded in 2013, the company publicly launched its commission free brokerage service in 2015, promoting the absence of trading commissions and minimum account balances. The significance was not simply one more inexpensive broker. Robinhood treated brokerage as a consumer software product and targeted younger users who might never have opened an account through a traditional financial institution.
The model put intense pressure on the wider industry. Large US brokers eventually removed commissions from many online stock and ETF trades as well, turning zero dollar execution from an unusual selling point into something increasingly expected by retail customers.
The broker had now travelled an extraordinary distance from its coffee house origins. Market access that once required a personal relationship with an intermediary and substantial transaction fees could be obtained through software with no visible commission. The intermediary had not disappeared. Its economics had simply become harder for the customer to see.
Zero Commission Did Not Mean Zero Cost
A broker charging no explicit stock commission still needs to generate revenue. Modern brokerage firms may earn interest on customer cash, charge for margin loans, receive stock lending income, charge subscription fees or provide more expensive products alongside free stock execution. In the United States, payment for order flow also became particularly important to some retail broker models.
Payment for order flow occurs when a market maker or other trading venue compensates a broker for sending customer orders to it. The SEC had already introduced disclosure requirements concerning the practice in the 1990s. It can help brokers support low or zero explicit commissions, but it creates a potential conflict because the broker receives revenue from the entity chosen to execute the customer’s order.
That conflict became especially visible during the zero commission era. In 2020, the SEC charged Robinhood Financial over misleading disclosures concerning revenue from payment for order flow and failures associated with best execution. Robinhood settled the charges without admitting or denying the SEC’s findings. The case demonstrated a basic truth about modern brokerage: a trade carrying a $0 commission can still have economically meaningful execution costs.
The old broker charged customers directly. The modern platform can sometimes monetise the transaction through less obvious channels.
Fractional Shares Lowered the Entry Cost Again
Online brokers later removed another practical obstacle: the requirement to purchase whole shares. High priced stocks could require hundreds or thousands of dollars for a single share, creating an awkward barrier for investors building small diversified portfolios. Fractional trading allowed customers to purchase a dollar amount instead.
Fractional ownership was not completely new. Dividend reinvestment plans had created fractional positions for years. What changed was the ability to place ordinary brokerage orders for fractions of selected stocks and exchange traded funds. FINRA notes that fractional share investing has become more widely available as part of modern micro investing services.
The technology looks simple from the customer’s side, but brokers must decide how the fractions are processed. A firm may aggregate multiple client orders into whole shares or maintain fractional interests inside its own record keeping system. Voting rights, transfers and execution times can also differ from whole share transactions.
Fractional trading represents another stage in the long reduction of minimum practical investment size. Exchange membership once restricted market participation to a small professional class. Discount commissions opened access further. Online brokerage reduced transaction costs. Fractional shares then allowed customers to invest amounts that may be smaller than the price of one share.
Comparing Brokers Became a Market of Its Own
As brokerage became easier to enter, choosing between brokers became more complicated. A nineteenth century investor mainly needed access to a reputable intermediary connected to the relevant exchange. A modern investor may have dozens of platforms offering different combinations of markets, account types, research, fractional shares, interest on cash, extended hours trading, options, APIs and mobile tools.
Comparison resources consequently became part of the brokerage industry surrounding the brokers themselves. Sites such as BrokerListings.com compare modern providers across factors including costs, regulation, platforms, available assets and account features. Its current stock broker coverage, for example, distinguishes between providers offering direct share ownership, fractional investing, extended hours access and other features that barely existed as retail considerations during the traditional brokerage era.
The need for comparison reflects how far the broker’s job has expanded. Two firms may both execute a purchase of the same listed stock but provide very different account experiences around that transaction. One may concentrate on long term investors and retirement accounts. Another may cater to active traders requiring advanced order types and APIs. A third may focus on mobile simplicity and fractional investing.
Execution remains the common function, but the surrounding services increasingly determine which broker fits a particular investor.
Modern Brokers Are Technology and Custody Businesses
The visible trading interface represents only a small part of a modern brokerage operation. Brokers must maintain customer records, protect assets, satisfy capital and compliance requirements, calculate margin, process corporate actions and tax documents, route orders, communicate with clearing firms and exchanges and maintain systems capable of operating during extreme market activity.
Many retail brokers do not perform every function internally. Introducing brokers may depend on separate clearing organisations for custody, settlement and back office services. Large integrated firms can perform more functions themselves. Either way, clicking one button can trigger a complicated sequence of electronic messages and regulatory responsibilities.
The broker’s routing decision is particularly important because modern securities markets are fragmented. A US equity order can potentially interact with national exchanges, market makers and other electronic venues. Brokers therefore need systems designed to assess where customer transactions should be executed.
The customer rarely sees these decisions. The account may show a completed purchase almost instantly, creating the impression that the broker simply moved shares into the portfolio. In reality, execution, clearing and settlement remain separate processes even though technology conceals much of the machinery.
Regulation Followed the Broker From the Branch Office to the App
Technology changed how customers interacted with brokers, but it did not eliminate questions about conflicts of interest. Traditional brokers could earn additional commissions by encouraging customers to trade frequently. Modern brokers may have incentives related to order routing, margin balances, securities lending or particular financial products.
US regulation has consequently continued developing alongside the brokerage model. In 2019, the SEC adopted Regulation Best Interest, which requires broker dealers to act in the best interest of retail customers when making securities or investment strategy recommendations and prevents them from placing their own interests ahead of the customer’s when making those recommendations. Compliance became mandatory in 2020.
The rule does not turn every self directed online brokerage account into an advisory relationship. A customer can still make independent decisions without receiving a broker recommendation. It does, however, show how the regulatory question changed. Early exchanges mainly needed rules ensuring brokers honoured transactions with one another. Modern regulators also examine how brokers recommend investments, disclose conflicts and route customer orders.
The intermediary became less visible on the screen while becoming more heavily embedded in financial regulation.
The Stockbroker Did Not Disappear
Predictions that online trading would eliminate stockbrokers were only partly correct. The individual broker who spent the day taking routine buy and sell orders by telephone has become much less important. Software performs that job more quickly and at a fraction of the cost.
Other forms of brokerage survived. Wealthy clients still use advisers and private bankers. Institutional investors employ sales traders and execution specialists when moving positions too large to send casually through a retail interface. Investment banks maintain brokerage operations for hedge funds and asset managers. Retail platforms still employ licensed professionals for support and advisory services.
More importantly, the brokerage firm itself never disappeared. Customers still require regulated infrastructure connecting their accounts with exchanges, market makers, clearing organisations and securities depositories. The broker changed from a person into a system.
This is one reason modern online trading can create the illusion that individuals now deal directly with stock exchanges. The investor sees only the user interface. The broker’s most important work increasingly occurs behind it.
From Coffee House Broker to Software Platform
The history of stockbrokers can therefore be read as a long decline in the cost of financial intermediation. Early brokers were valuable because they knew the market participants and possessed physical access to places where securities changed hands. Formal stock exchanges turned that access into controlled membership. Telegraphs, ticker machines and telephones allowed brokers to serve customers across larger geographic areas, while full service firms combined execution with advice and research.
Regulation after the 1930s formalised the broker dealer business, and the establishment of SIPC after the brokerage failures of the late 1960s strengthened the infrastructure around customer assets. The abolition of fixed US commissions in 1975 then broke the old pricing structure and allowed discount brokers to separate inexpensive execution from expensive personal advice. Britain’s Big Bang in 1986 pushed its market in a comparable direction.
Personal computers removed the need to telephone an order. The internet removed much of the remaining information advantage held by brokers. Smartphones made execution permanently portable. Zero commission models then removed the most visible transaction fee, while fractional shares lowered the capital required to purchase expensive securities.
None of these changes removed the intermediary. They changed what the intermediary does and how it gets paid.
The twenty first century broker is less likely to resemble the stereotypical stockbroker shouting orders across a trading floor. It is more likely to be a regulated technology company operating trading software, custody arrangements, routing systems and clearing connections behind an app or website.
That is perhaps the biggest change in the profession. For most of its history, investors knew exactly who their broker was because they had to speak to that person to reach the market. Today, the most successful brokers are often those that make the process feel as though no broker is involved at all.