Securities & Investment Disputes
Unsuitable Investments and Churning: Claims Against Brokers
Draft for attorney review
Short answer
A broker who recommends a security or strategy must have a reasonable basis to believe it is in the customer's best interest given the customer's age, finances, objectives, risk tolerance and liquidity needs, and must have the same basis for the pattern of trading taken as a whole. An unsuitability claim says a recommendation never fit the customer. A churning claim says the broker controlled the account and traded it excessively to generate commissions. Both are proved mostly from the firm's own records: the new-account form, confirmations, statements and commission runs. The usual forum is FINRA arbitration, and the brokerage firm is liable alongside the broker for failing to supervise.

The rules a broker must follow
Three rules do the work. Since June 30, 2020, Regulation Best Interest (17 C.F.R. § 240.15l-1) governs any recommendation of a securities transaction or investment strategy to a retail customer, meaning a natural person who uses the recommendation for personal, family or household purposes. Its care obligation requires the broker to use reasonable diligence, care and skill to understand the risks, rewards and costs of the recommendation; to have a reasonable basis to believe the recommendation is in the particular customer's best interest in light of that customer's investment profile; and, for a series of recommended transactions, to have a reasonable basis to believe the series is not excessive and is in the customer's best interest when taken together.
FINRA Rule 2111, the suitability rule, still applies to recommendations made before that date and to customers who are not retail customers under Regulation Best Interest, such as a business entity or an institutional account. Its three parts mirror the care obligation: reasonable-basis suitability (the product is suitable for at least some investors), customer-specific suitability (suitable for this customer's profile), and quantitative suitability (a series of trades is not excessive). The rule's supplementary material names turnover rate, cost-to-equity ratio and in-and-out trading as indicators of excessive activity.
FINRA Rule 2090, know your customer, requires the firm to use reasonable diligence when opening and maintaining every account to know the essential facts about the customer. A broker cannot defend a recommendation by saying he never asked.
What makes an investment unsuitable
Unsuitability is a mismatch between the product and the person, judged at the time of the recommendation. The common patterns:
- Illiquid or long-lock-up products (non-traded REITs, private placements, structured notes, variable annuities with long surrender periods) sold to a retiree who needs income or access to principal.
- Concentration: a large share of net worth in one issuer, one sector or one sponsor's programs.
- Leveraged and inverse exchange-traded products, options strategies or margin for a customer with a conservative profile or no experience.
- High-cost share classes or products when the same exposure was available for less, which Regulation Best Interest treats as a cost question the broker must answer.
- A new-account form that was filled in to fit the product rather than the customer: inflated net worth, "speculation" checked for a widow's only account.
The investor's actual profile, not the form, controls when the form was wrong and the broker knew it. Emails, notes and the customer's other accounts show what the broker knew.
What churning is and how it is proved
Churning is excessive trading of an account by a broker who controls it, done to generate commissions rather than to serve the customer. The three elements an arbitration panel or court looks for:
- Control. Either formal discretionary authority, or de facto control shown by a customer who approved every trade the broker suggested without independent judgment.
- Excessive trading in light of the customer's objectives, measured by the indicators below.
- Intent to defraud or reckless disregard of the customer's interests, which is usually inferred from the first two elements and the commissions earned.
The numbers come from the account records:
| Measure | How it is computed | What it shows |
|---|---|---|
| Turnover ratio | Total purchases in a year divided by average account equity | How many times the portfolio was replaced; a conservative account turned over several times a year needs an explanation |
| Cost-to-equity ratio | Total commissions, markups and fees in a year divided by average equity | The return the account had to earn just to break even |
| In-and-out trading | Securities bought and sold within short periods, then repurchased | Activity with no investment rationale |
| Commission share | Commissions on the account as a share of the broker's total production | Motive |
No single number decides it; FINRA's own guidance says no single test defines excessive activity. The ratios are read against the customer's stated objectives. An active trader who asked for frequent trading is not churned; a retiree with an income objective and a cost-to-equity ratio in double digits is a strong case. Under Regulation Best Interest the control element is not part of the care obligation for retail customers, so a series of recommended trades can violate the rule even where the customer technically approved each one.
Example
Suppose a retired Fort Worth schoolteacher opens a $400,000 account with an objective of "income and preservation of capital." Over two years the broker recommends 140 trades, each approved by phone, in closed-end funds and preferred stocks that are sold within weeks and replaced with similar positions. Purchases total $2.4 million, commissions and fees total $58,000, and the account ends down 20 percent in a flat market. Turnover is about three times a year and the cost-to-equity ratio is over seven percent, against an income objective. Each trade may have been defensible alone. The series was not, and the firm's exception reports should have flagged the account long before the customer did.
Who is liable
The broker, for the recommendations. The brokerage firm, on three theories: it is responsible for its registered representative's conduct within the scope of employment; it has its own duty under FINRA Rule 3110 to maintain a supervisory system reasonably designed to achieve compliance, including review of transactions and exception reports that are designed to catch exactly this activity; and Regulation Best Interest places the compliance and conflict-of-interest obligations on the firm itself. In practice the firm is the defendant that pays, so the supervision evidence (what the branch manager saw, when the exception report fired, what was done) is as important as the trading evidence.
Damages
Three measures are argued. Net out-of-pocket loss: deposits minus withdrawals minus ending value. Well-managed portfolio: the difference between the account's actual result and what a portfolio matching the customer's stated objectives would have earned over the same period, which captures the opportunity cost of being in the wrong investments. Commission disgorgement: in a churning case, the commissions and fees generated by the excessive trading are recoverable on their own, even if the account did not lose money, because they are the fruit of the wrong. Texas Securities Act rescission is available when a specific security was sold by a misstatement. Attorney's fees and costs depend on the claims pleaded and the panel's discretion.
What the firm will argue
- Ratification. The customer received confirmations and monthly statements and never objected. Panels weigh this against what the customer could realistically understand from the documents and whether the broker explained away the activity.
- Sophistication. The customer was experienced or wealthy and knew the risks. Relevant to customer-specific suitability, not a complete defense, and not a defense at all to a cost-to-equity ratio the customer could not earn back.
- The customer directed the trades. Unsolicited trades are not recommendations. The firm's own order tickets mark trades solicited or unsolicited, and a pattern of "unsolicited" marks on trades the customer could not have originated is itself evidence.
- Market loss. The firm will attribute the decline to the market. The well-managed portfolio measure answers it.
- Time. FINRA's six-year eligibility rule and the state and federal statutes of limitations, covered in the guide on securities deadlines.
Forum and process
Nearly every brokerage account agreement requires FINRA arbitration, and a customer can demand it even without a clause. The case begins with a statement of claim, followed by document exchange under FINRA's discovery guide (the firm's commission runs, exception reports, supervisory notes and the broker's compliance file are standard requests), then a hearing before one or three arbitrators with no appeal on the merits. Claims against a stand-alone investment adviser, who owes a different duty, go to court or private arbitration; the guide on FINRA arbitration versus court explains the choice, and the one on adviser versus broker duties explains why the label matters.
When to involve a litigator
As soon as the statements stop making sense. A litigator with the account statements and the new-account form can compute turnover and cost-to-equity in an afternoon and tell you whether the pattern is a claim. Waiting costs evidence: brokers move firms, exception reports are purged on retention schedules, and the six-year eligibility clock runs from each trade. Tina Wysk represents investors and firms in securities and investment disputes in FINRA arbitration and in Dallas state and federal courts.
Questions on this topic
What turnover ratio is considered excessive trading?
There is no fixed number. FINRA's guidance under Rule 2111 says no single test defines excessive activity and lists turnover rate, cost-to-equity ratio and in-and-out trading as the indicators. Arbitrators read the ratios against the customer's objectives: turnover of several times a year in an account with an income or preservation objective, or a cost-to-equity ratio the account could not realistically earn back, points to churning. For an account that asked for active trading, the same numbers may be unremarkable.
Does Regulation Best Interest replace the FINRA suitability rule?
For recommendations to retail customers made since June 30, 2020, yes. FINRA amended Rule 2111 so that it does not apply to recommendations covered by Regulation Best Interest, whose care obligation incorporates the same reasonable-basis, customer-specific and series-of-transactions tests and adds an express cost factor. Rule 2111 still governs earlier recommendations and recommendations to customers who are not retail customers, such as entities and institutions.
I approved every trade. Can I still claim churning?
Possibly. Churning traditionally requires the broker's control of the account, but control can be de facto: a customer who relied on the broker and approved whatever was suggested without independent judgment did not really control the account. Under Regulation Best Interest the series-of-transactions test has no control element for retail customers, so excessive recommended trading can violate the rule even when each trade was approved. The firm's order tickets and the phone recordings often decide how real the approvals were.
Can I recover the commissions in a churning case?
Yes. Commissions, markups and fees generated by excessive trading are recoverable as disgorgement because they are the benefit the broker gained from the wrong, and they can be awarded whether or not the account lost money overall. Trading losses are claimed separately, usually measured either as net out-of-pocket loss or by comparing the account to a portfolio that matched the customer's stated objectives over the same period.
Is the brokerage firm liable for what my broker did?
Usually. The firm is responsible for its registered representative's conduct within the scope of his employment, and FINRA Rule 3110 requires the firm to maintain a supervisory system, written procedures and transaction review designed to catch unsuitable recommendations and excessive trading. Regulation Best Interest places the compliance and conflict obligations on the firm directly. Failure-to-supervise claims against the firm are standard in FINRA arbitration and the firm is normally the party that pays an award.
Sources
- 17 C.F.R. § 240.15l-1 (Regulation Best Interest) (best-interest obligation at the time of the recommendation; care obligation including costs and a series of transactions that is not excessive; definition of retail customer; conflict and compliance obligations on the firm)
- FINRA Rule 2111 (Suitability) (reasonable-basis, customer-specific and quantitative suitability; turnover rate, cost-to-equity ratio and in-and-out trading as indicators; no single test; does not apply to recommendations covered by Regulation Best Interest (amended effective June 30, 2020))
- FINRA Rule 2090 (Know Your Customer) (reasonable diligence to know the essential facts about every customer when opening and maintaining an account)
- FINRA Rule 3110 (Supervision) (firm's duty to maintain a supervisory system and written procedures, including review of transactions and correspondence)
- FINRA Rule 12206 (six-year eligibility rule for FINRA arbitration)
Legal sources last checked November 6, 2026. Statutes and rules change; the date matters.
This guide is general information about Texas and federal law for business owners, not legal advice about your situation. Statutes, rules and court decisions change, and small facts change outcomes. Reading it or contacting Tina Wysk through this site does not create an attorney-client relationship.


