FINRA 5% Markup Policy

Broker-dealers earn spread income on every trade they execute on behalf of clients. To prevent predatory pricing, FINRA’s 5% markup policy sets an industry guideline that markups (in agency trades) and markdowns (in principal trades) should not exceed roughly 5% of the prevailing market price, though context—including order size, liquidity, volatility, and execution difficulty—determines what qualifies as fair.

The Rule and Its Purpose

In the 1970s, FINRA (then the National Association of Securities Dealers) codified Rule 5110 to prevent brokers from overcharging unsophisticated retail investors. The 5% ceiling became the industry standard. Today, the rule states that a broker-dealer’s markup or markdown should be “fair and reasonable” when executing customer trades.

The 5% figure is a guideline, not a hard cap. A markup of 5.5% or 6% on a difficult-to-execute block trade in an illiquid microcap might be considered reasonable. Conversely, a 3% markup on a liquid, large-cap stock during high volume might be deemed excessive if the broker provided no real value and simply passed the order through to a market maker.

The rule applies to all customer securities transactions: equities, bonds, mutual funds, and listed options. It does not apply to underwriting spreads on new securities or to trades where the client is a sophisticated institution capable of negotiating terms.

How Markup Is Calculated

Markup is the difference between the prevailing market price (the inside bid-ask spread, or for illiquid securities, a representative bid) and the price charged to the customer, divided by the market price.

Example:

• Market bid: $50.00
• Market ask: $50.20 (20-cent spread)
• Broker buys at market ask for inventory ($50.20)
• Broker sells to customer at: $52.60
• Markup: ($52.60 − $50.20) / $50.20 = 4.78%

This falls within the guideline. But if the broker charged $53.00 (5.9% markup), enforcement might scrutinize whether the order was large, the market was volatile, or execution was genuinely difficult. A 5.9% markup on a routine 100-share order in an S&P 500 stock is harder to justify than the same markup on a 100,000-share order in an illiquid stock during market stress.

Factors in Determining Fairness

FINRA enforcement guidance lists several factors that contextualize the 5% threshold:

1. Order size and difficulty. A 500,000-share order is harder to execute than 100 shares. The broker may need to take on inventory risk, search for liquidity, or move the market. A higher markup is justified.

2. Security liquidity. Trading a penny stock versus the S&P 500? The penny stock warrants a wider markup because finding a counterparty is harder and inventory risk is greater.

3. Price volatility. If the stock moved 8% in the past week, the broker faces real risk holding inventory between client order and execution. A 4–5% markup may be reasonable despite the size being small.

4. Complexity. A customer requesting options strategies or fixed-income block trades may face higher markups because execution is more complex and the broker absorbs more risk.

5. Services provided. If the broker offered unsolicited investment advice, research, or market color alongside the trade, some of the markup compensates for those services (though this conflates markup with advice fees and creates gray areas).

6. Nature of the broker’s business. Retail brokers executing retail orders may command higher markups than institutional dealers because they provide onboarding, customer service, and technology infrastructure.

The rule is fact-intensive. A 6% markup on a 10,000-share illiquid junior mining stock might be fair. The same 6% markup on an Apple trade of 500 shares is a red flag.

Markdown and Principal Trades

When a broker acts as principal—buying an investor’s securities into inventory—the inverse applies. The broker pays the customer less than the inside market bid, known as a markdown. Rule 5110 also caps this, again at a rough 5% guideline.

Example:

• Market bid: $75.00
• Market ask: $75.30
• Customer sells to broker at: $72.00
• Markdown: ($75.00 − $72.00) / $75.00 = 4.0%

Markdowns are scrutinized less often than markups because customers are motivated to shop around before selling, but a blatant markdown—e.g., paying $50 when the bid is $75—attracts enforcement attention.

Enforcement and Safe Harbor

FINRA does not routinely prosecute firms for isolated 5.5% markups. Enforcement focuses on patterns: a firm consistently overcharging small retail accounts, hiding markups in bundles, or using complexity to obscure pricing. A single large markup in an order that was genuinely difficult to execute is unlikely to trigger a complaint.

However, firms found to have marked up retail customer trades excessively—say, 10–15% routinely—face censure, fines, and forced restitution. In high-profile cases, FINRA has ordered firms to repay millions to retail customers.

There is no absolute safe harbor at 5%, but the guideline strongly suggests that markups below 5% on routine customer trades are defensible, while markups above 8% on simple, liquid securities are indefensible absent documented circumstances.

Interaction with Best Execution

Markup rules are cousins of best execution requirements. A broker must execute customer trades at the best available price, not just any price. If a broker tightens the spread artificially to inflate markup, it violates both rules. The markup must be earned through legitimate market-making services (absorbing inventory risk, waiting for liquidity to appear), not through deception or conflicts of interest.

A retail customer who discovers their broker charged an 8% markup on a routine trade might file a FINRA arbitration claim combining markup fairness and best-execution violations. If the customer can show the broker had access to better pricing and chose not to use it, or that the markup was excessive for the order type and security, they may recover damages.

Who Is Exempt

The 5% rule does not apply to:

• Underwriting.Securities freshly issued in an IPO carry underwriter spreads (often 3–7%) that are negotiated and disclosed separately.
• Institutional clients. Sophisticated investors capable of negotiating pricing can agree to higher markups explicitly.
• Listed options. Options on exchanges have their own pricing rules; standard spreads can be 5–20 cents per contract depending on strike and expiration.
• OTC trades in complex derivatives may have wider implicit spreads due to execution difficulty.

Practical Implications

Retail investors should:

1. Ask for the markup. Brokers are not obligated to disclose markups explicitly on simple trades, but customer service should provide them upon request. Persistent refusal is a warning.

2. Compare across firms. Market for the same stock at different brokers. If one charges 2% and another 7%, the difference is real and worth investigating.

3. Watch for hidden markups. Some brokers embed markups in mutual fund sales loads, option bid-ask pricing, or bond spreads without clear disclosure. Review order confirmations carefully.

4. Report excessive markups. If a trade seems overpriced and the broker cannot justify it with order complexity or market conditions, file a complaint with FINRA arbitration.

See also