Key Takeaways

  • Churning is excessive trading to generate commissions, measured by turnover ratio and cost-equity ratio.
  • A turnover ratio of 6 or cost-equity ratio above 20% is generally indicative of churning.
  • Front-running (trading ahead of client orders) is strictly prohibited.
  • Scalping (recommending securities then selling own position) is prohibited.
  • Guaranteeing against loss is ALWAYS prohibited, regardless of circumstances.
  • Sharing in client profits/losses requires written consent AND proportionate sharing.
  • Unauthorized trading and selling away are serious violations.
  • Material misrepresentation and omission are forms of fraud.
Last updated: December 2025

Prohibited and Unethical Practices

Both investment advisers and broker-dealers must avoid prohibited practices that harm clients and violate securities laws.

Churning (Excessive Trading)

Churning is trading that is excessive in light of the account's objectives, conducted primarily to generate commissions rather than benefit the client.

Elements of Churning

To prove churning, three elements must be established:

ElementDescription
ControlBroker had control over the account (actual or de facto)
Excessive tradingTrading was excessive given account objectives
ScienterBroker acted with intent or reckless disregard for client

Quantitative Indicators

FINRA Rule 2111 (Quantitative Suitability) identifies these key metrics:

MetricCalculationWarning Levels
Turnover RatioTotal purchases ÷ Average equity (annualized)2 = suggestive, 4 = presumptive, 6+ = conclusive
Cost-Equity RatioTotal annual costs ÷ Average equityAbove 20% indicative of excessive trading
In-and-Out TradingFrequent buy/sell of same securities"Hallmark" of churning

Turnover Ratio Examples

Account TypeTurnover RatioInterpretation
Conservative2Suggestive of churning
Moderate4Presumptive of churning
Any account6+Generally conclusive

De Facto Control

Even in non-discretionary accounts, churning can occur if:

  • Client routinely accepts all broker recommendations
  • Client never makes independent decisions
  • Broker dominates decision-making

Fraudulent Practices

PracticeDescription
Material MisrepresentationMaking false statements of material fact
OmissionFailing to disclose material information
ManipulationArtificially affecting security prices
Front-RunningTrading ahead of known client orders
ScalpingRecommending securities then selling own position

Front-Running

Trading in a security ahead of a client's order to profit from the expected price movement:

  • Applies to advisers, BDs, and their employees
  • Violates fiduciary duty
  • Criminal penalties may apply

Scalping

Recommending securities to clients while secretly selling the adviser's own position:

  • Deceives clients about adviser's true opinion
  • Violates disclosure requirements
  • May cause client losses while adviser profits

Trading Violations

Unauthorized Trading

Making trades without client consent:

  • Even one unauthorized trade is a violation
  • Discretionary authority requires written authorization
  • Time/price discretion ≠ full discretion

Selling Away

Selling securities NOT approved by the employing firm:

  • Private securities transactions
  • Violates firm supervision requirements
  • May involve undisclosed compensation

Best Execution

Advisers must seek the most favorable terms reasonably available:

FactorConsideration
PriceBest available price for the security
CommissionReasonable commission rate
SpeedTimeliness of execution
ReliabilityBroker's track record
Total costAll-in cost to the client

Sharing in Client Accounts

General Rule

Sharing in profits or losses is prohibited unless:

RequirementDetails
Written consentClient must agree in writing
Firm approvalEmploying firm must approve
Proportionate sharingBased on capital contribution

Exception for Family Members

When sharing with immediate family members:

  • Proportionate sharing NOT required
  • Written consent still required
  • Relationship must be genuine

Guarantees

Absolutely Prohibited

Prohibited PracticeExample
Guaranteeing against loss"I'll cover any losses you have"
Promising specific returns"You'll definitely make 10%"
Making up lossesReimbursing client from personal funds

Allowed Practices

AllowedExample
Historical performance"This fund returned 8% last year" (with disclosures)
Investment objectives"We seek 7-9% annual returns"
Risk discussions"Higher risk may mean higher returns"

Other Prohibited Practices

PracticeDescription
Borrowing from clientsUnless client is a lending institution
Lending to clientsGenerally prohibited
Excessive markupsUnreasonable profit on principal trades
Backdating documentsFalsifying dates on trades or contracts
Forging signaturesCreating or altering client signatures
ComminglingMixing client and firm assets
MisappropriationUsing client assets for other purposes
False statements to regulatorsProviding false information in exams

Exam Tip: Churning indicators - turnover ratio of 6+ and cost-equity ratio above 20%. Guarantees against loss are ALWAYS prohibited. Sharing requires WRITTEN consent AND proportionate sharing (except family).

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Churning: Quantitative Indicators
Turnover Ratio Thresholds
Test Your Knowledge

A broker's account has a turnover ratio of 6 and a cost-equity ratio of 22%. This suggests:

A
B
C
D
Test Your Knowledge

An investment adviser may share in a client's profits and losses if:

A
B
C
D
Test Your Knowledge

A broker tells a client, "If you lose any money on this trade, I'll personally reimburse you." This statement:

A
B
C
D
Test Your Knowledge

An adviser learns a large institutional client will purchase 100,000 shares of XYZ. Before executing the client's order, the adviser buys XYZ for their personal account. This is:

A
B
C
D