Key Takeaways

  • Best execution requires seeking the most favorable terms reasonably available.
  • Applies to both investment advisers (fiduciary duty) and broker-dealers.
  • Factors include price, speed, likelihood of execution, and total cost.
  • Soft dollar arrangements must provide research benefits to clients.
  • Section 28(e) provides safe harbor for soft dollars used for research.
  • Directed brokerage may impact best execution obligations.
  • Regular review of execution quality is required.
  • Trade allocation must be fair among all client accounts.
Last updated: December 2025

Best Execution

Best execution is the obligation to seek the most favorable terms reasonably available when executing client transactions.

Definition and Scope

What is Best Execution?

Best execution means executing client orders at the most favorable terms reasonably available under the circumstances.

Who is Subject to Best Execution?

EntityStandard
Investment AdvisersFiduciary duty component
Broker-DealersFINRA Rule 5310
Dual RegistrantsBoth standards apply

Factors in Best Execution

Key Considerations

FactorDescription
PriceBest available price for the security
SpeedTimeliness of execution
SizeAbility to execute the full order
LikelihoodProbability of execution
Total costAll-in cost including commissions
SettlementCertainty of settlement

Market Conditions

Consider prevailing market conditions:

  • Current bid/ask spread
  • Market volatility
  • Liquidity of the security
  • Size of the order relative to volume

Execution Quality Review

Regular and Rigorous Review

Advisers must conduct regular and rigorous evaluation of execution quality:

Review ElementFrequency
Broker comparisonAt least annually
Execution quality analysisQuarterly recommended
Commission rate reviewAnnually
Service evaluationOngoing

Documentation Requirements

DocumentPurpose
Broker selection criteriaHow brokers are chosen
Execution reportsAnalysis of execution quality
Commission schedulesFee arrangements
Review findingsResults of periodic evaluations

Soft Dollar Arrangements

Definition

Soft dollars are arrangements where advisory clients pay more than the lowest available commission in exchange for research or other services.

Section 28(e) Safe Harbor

The safe harbor protects advisers who use commissions to pay for:

EligibleNot Eligible
Research reportsOffice rent
Financial databasesGeneral office equipment
Analytical softwareTravel expenses
Portfolio analysis toolsSalesperson salaries
Market dataAdvertising
Execution servicesLegal services

Three-Part Test

For Section 28(e) protection:

  1. Eligible product or service - Must be research or brokerage
  2. Lawful and appropriate assistance - Helps in investment decision-making
  3. Good faith determination - Commission is reasonable relative to value

Disclosure Requirements

Soft dollar arrangements must be disclosed in:

  • Form ADV Part 2A (Brochure)
  • Description of services received
  • Conflicts of interest involved

Directed Brokerage

Client-Directed Brokerage

When clients direct which broker to use:

ConsiderationImplication
Best executionMay not achieve best execution
DisclosureMust disclose potential impact
DocumentationClient direction must be in writing
ResponsibilityAdviser not responsible for execution quality

Adviser-Directed Brokerage

When advisers select brokers:

  • Best execution obligation fully applies
  • Must periodically evaluate alternatives
  • Document selection rationale

Trade Allocation

Fair Allocation Policy

When aggregating orders, allocation must be:

PrincipleApplication
FairNo favoritism among accounts
EquitableAll accounts share proportionally
ConsistentApplied uniformly over time
DocumentedAllocation policy in writing

Allocation Methods

MethodDescription
Pro-rataBased on account size or order size
RotationalAccounts take turns receiving first fills
RandomComputer-generated random allocation
BundledAll accounts receive same average price

IPO Allocation

Special considerations for IPOs:

  • Must have written allocation policy
  • Cannot favor certain accounts
  • Performance-based fees don't get priority
  • New accounts don't automatically get IPOs

Trade Aggregation

When Aggregation is Appropriate

Aggregating client orders may be appropriate when:

  • Multiple clients need similar trades
  • Aggregation benefits all participants
  • Written policies permit aggregation
  • Fair allocation is ensured

Benefits of Aggregation

BenefitDescription
Better pricesLarger orders may get better execution
Lower costsReduced per-share commissions
Fair treatmentAll clients share same price
Efficient executionReduces market impact

Exam Tip: Best execution considers price, speed, size, likelihood, and TOTAL COST. Soft dollars are protected under Section 28(e) for RESEARCH and BROKERAGE only. Trade allocation must be FAIR and EQUITABLE among all accounts.

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Best Execution and Soft Dollars
Test Your Knowledge

Best execution requires an adviser to seek:

A
B
C
D
Test Your Knowledge

Under Section 28(e), an investment adviser may use soft dollars to pay for:

A
B
C
D
Test Your Knowledge

When aggregating trades for multiple client accounts, the adviser must:

A
B
C
D
Test Your Knowledge

A client directs the adviser to use a specific broker. The adviser:

A
B
C
D