Fixed commissions shaped traditional stockbroking by restricting what brokers could charge for executing trades. Exchange rules set minimum rates, which meant a firm could not simply win an order by offering a cheaper commission. Competition had to take other forms: better service, investment research, trading expertise or a stronger client relationship.
The economic issue was not whether brokerage involved real work. It did. The question was whether an exchangewide price schedule charged different customers sensibly for that work. A small investor needing advice and a fund manager placing a large order could generate very different costs, even when the same pricing framework applied.
This part of the history of stock brokers concerns the business model behind the commission bill: what it paid for, whose business was most attractive, and why large investors pushed against the rules.
What “Fixed Commissions” Actually Meant
A fixed commission was not necessarily one flat dollar fee for every transaction. In the historical exchange system, “fixed” referred to restrictions on price negotiation. A schedule could calculate the minimum charge using the value and quantity of securities traded. Different orders could therefore attract different bills without brokers being free to discount those bills.
The arrangement had old roots. On May 17, 1792, 24 stockbrokers signed the Buttonwood Agreement, which established trading rules and set commissions. The NYSE’s account of its founding agreement places common pricing alongside an effort to build confidence between trusted trading parties. The later commission system developed far beyond that original agreement; it was not one unchanged tariff lasting for nearly two centuries.
Three distinctions help prevent confusion. A minimum commission set a floor, not necessarily a ceiling. The commission paid the broker, rather than determining the stock’s market price. And exchange commission rules should not be treated as a universal description of every securities transaction in every market.
In practice, the minimum often became the standard price. For the NYSE schedule operating through much of the 1960s, almost all transactions took place at minimum rates, even though brokers could charge more. The charge per share did not fall as order size increased, despite lower execution costs per share for large transactions. That mismatch is documented in the Federal Reserve Bank of New York’s study of corporate equities and the national market system.
The Commission Bought More Than Execution
Traditional brokerage makes more sense when the commission is viewed as payment for a package, rather than a single action. Execution and research were different services, but the customer did not necessarily receive separate prices for them.
A research department might produce an assessment of a company that several clients used. Executing an order required a different kind of work. Some transactions were straightforward; others called for judgment in finding buyers or sellers without disrupting the market. A common charge could obscure both the cost of producing research and the difficulty of completing a trade.
This bundling was already a central issue during deregulation. In his June 1975 speech on brokerage commissions and research, SEC Commissioner Philip Loomis distinguished execution from research and described how fixed commissions had paid for both together.
The economic tradeoff is straightforward. A client who valued advice and research could find a bundled service useful. A client arriving with a decision already made might prefer execution alone. Neither preference is unreasonable. The pricing problem arises when both clients must buy substantially the same package without a meaningful discount for declining part of it.
Calling research “free” did not resolve that problem. If commission revenue funded it, somebody paid. What remained unclear was how much each customer contributed and whether the services received justified the contribution.
Why Order Size Changed the Economics
Consider a simplified cost model. These figures are hypothetical, not a reconstruction of an exchange tariff or a historical broker’s accounts.
Assume that processing an order costs a brokerage $20, plus two cents per share. Assume also that its commission schedule charges 20 cents per share, without a volume discount. The model excludes research, selling expenses, difficult executions and other overhead so that the effect of order size is visible.
| Order size | Commission revenue | Assumed processing cost | Revenue left before other expenses |
|---|---|---|---|
| 100 shares | $20 | $22 | −$2 |
| 1,000 shares | $200 | $40 | $160 |
| 10,000 shares | $2,000 | $220 | $1,780 |
The large order produces 100 times the commission of the small order, but only ten times the assumed processing cost. That difference creates room for a discount while still leaving money to cover other expenses.
It also shows why a brokerage could prefer one large customer to many small ones. Ten separate customers placing 100 share orders would generate the same commission as one 1,000 share order in this model, but incur much more processing work.
Real trading is less tidy. A large order in a thinly traded stock may require considerable care, while a smaller order in an actively traded stock may be simple. Share count alone cannot measure execution difficulty. The example identifies a pricing weakness, not a rule that every institutional trade is cheap.
The relevant distinction is between revenue and profit. A generous commission does not become pure profit before the firm pays its remaining expenses. Equally, the existence of those expenses does not prove that every customer should pay the same rate per share.
Did Large Customers Subsidize Small Investors?
One possible defense of a common schedule is cross subsidy: profitable large orders could help pay for serving less profitable small accounts. A brokerage with both kinds of customer might use that surplus to support services that small commissions could not cover on their own.
But a possible subsidy is not proof that the money reached its intended recipient. A firm could concentrate on lucrative institutional business rather than use the proceeds to serve individuals. Without a mechanism connecting the two, the claimed benefit to small investors could remain an argument rather than an outcome.
Contemporary scrutiny exposed this problem. The Senate’s Securities Industry Study discussed the greater profitability of institutionally oriented firms and the incentives this created to pursue institutional accounts. It also described institutions looking for cheaper ways to execute transactions. The disputed rate structure was influencing which customers firms wanted, not just what appeared on their invoices.
From an economic standpoint, a pricing floor can support a service network and protect inefficient spending at the same time. Those possibilities are not mutually exclusive. Evaluating the arrangement requires asking what customers actually received, how much provision cost, and whether another pricing method could have delivered it more efficiently.
How Brokers Competed When They Could Not Cut Rates
A restriction on price competition does not remove the desire to win business. It changes the available methods.
Suppose two brokers must charge the same minimum commission. One offers execution alone; the other offers execution plus useful research. A customer who values the research receives more for the same bill. The second broker has effectively competed on value without reducing the stated price.
Before 1975, institutional arrangements went further. Under customer directed “give-ups,” an executing broker transferred part of its commission to another broker. Fund managers used these payments to reward research or the sale of fund shares. Other reciprocal practices also redistributed commission income. The SEC’s report on the origins of soft dollar practices identifies these arrangements as responses to fixed rates that exceeded execution costs.
The distinction between research and fund distribution matters. Research could assist investment decisions. Selling additional fund shares could benefit the fund manager’s business. Both might be financed from trading commissions, but the person choosing the broker was not necessarily the person bearing the economic cost.
That separation creates a conflict. A manager might prefer a broker because the relationship supplies something valuable to the manager, even when another arrangement would be better for investors. This does not make every bundled service wasteful. It means the commission bill alone cannot establish whose interests the expenditure served.
Why the System Became Harder to Defend
The institutional workarounds weakened the case for maintaining a common schedule. If large customers could recover value through reciprocal arrangements, the system was not delivering genuinely uniform terms. It was preserving a published price while allowing bargaining to take place around it.
Reform therefore involved more than selecting a lower tariff. Policymakers had to consider whether to keep adjusting exchange schedules or allow brokers and customers to negotiate directly.
The transition began before the final abolition date. In April 1971, commissions became negotiable on the portion of exchange orders involving $500,000 or more. The SEC’s December 1974 proposal on competitive commission rates reviewed that staged approach and the conflicts associated with institutional reciprocal relationships. It also addressed the risks of retaining the existing system, rather than treating reform as the only uncertain option.
The economic choice was not between risk and no risk. Competitive pricing could disrupt established businesses. Maintaining the floor could preserve charges disconnected from costs and encourage further workarounds. Protecting a business model and protecting its customers were not necessarily the same objective.
What Negotiated Commissions Changed
Fixed exchange commissions for public customers ended in the United States on May 1, 1975. The change allowed price negotiation, but did not automatically separate research from execution or settle how investment managers should pay for either.
Congress subsequently introduced Section 28(e), providing protection, subject to conditions, when a manager used client commissions to obtain brokerage and research rather than choosing the lowest available commission. The FDIC’s securities law excerpts on brokerage and research services set out the historical concern and the requirement for a good faith judgment about the reasonableness of the charge relative to the services received.
The broader policy sequence belongs in the account of May Day 1975 and the end of fixed US brokerage commissions. For brokerage economics, the central change was simpler: firms could compete openly on the price of the service package, rather than mainly on what they added to an exchange prescribed bill.
Price negotiation also made differences between customers harder to ignore. A customer wanting research could pay for a richer service. Another wanting execution alone could look for a lower charge. Institutions could bargain over price directly instead of relying so heavily on indirect ways to recover commission value.
The Lasting Lesson of Fixed Commissions
The commercial logic behind the rise of discount stock brokers follows from this distinction between a service and its package. Execution does not have to be sold with every other service a brokerage can provide.
That does not make the cheapest commission the best bargain in every case. A useful comparison asks three questions: what work is included, what costs remain outside the quoted fee, and whether the customer needs the services being funded.
Fixed commissions made one part of brokerage pricing predictable while making other parts harder to see. They supported bundled services, encouraged competition through extras, and created incentives to pursue customers whose commissions exceeded the cost of serving them. Their central economic weakness was the gap between a standardized charge and very different customer needs.
The enduring issue is not whether brokers should be paid. It is whether the payment reflects the service, whether the customer can choose another arrangement, and whether the person directing the business benefits at somebody else’s expense.