Best Execution

Laws & Regulations High Relevance

The duty to seek the most favorable terms reasonably available when executing client transactions, considering all qualitative and quantitative factors beyond just price. Factors include speed of execution, certainty of settlement, commission costs, and market impact. Broker-dealers have explicit best execution obligations under FINRA rules. Investment advisers, while not subject to specific best execution rules, must seek favorable execution terms as part of their broader fiduciary duty to act in clients' best interests.

Example

An adviser executing a large block trade evaluates three broker-dealers: Broker A offers $0.01/share commission but 2-minute execution delay, Broker B offers $0.02/share with instant execution and price improvement, and Broker C offers $0.015/share with 30-second delay. The adviser chooses Broker B because the faster execution and price improvement provide better overall value despite slightly higher commissions, demonstrating best execution by considering multiple factors beyond just the lowest commission rate.

Common Confusion

Best execution does NOT mean lowest price or lowest commission. It requires evaluating multiple factors (price, speed, certainty, market impact) to achieve the most favorable overall terms. Many students incorrectly assume best execution means always choosing the cheapest commission, but regulators expect a qualitative analysis of what combination of factors serves the client best.

How This Is Tested

  • Evaluating which broker provides best execution across multiple factors (price, speed, certainty, commission)
  • Distinguishing best execution (overall favorable terms) from lowest price or lowest commission
  • Understanding documentation requirements for demonstrating best execution compliance
  • Recognizing best execution obligations in discretionary vs. non-discretionary accounts
  • Identifying best execution violations when advisers prioritize their own interests (directed brokerage, soft dollars)

Regulatory Limits

Description Limit Notes
Best execution factors (qualitative) Price, speed, likelihood of execution and settlement, size of order, nature of market No single factor is determinative; must consider totality of circumstances
Best execution factors (quantitative) Commission costs, bid-ask spreads, market impact costs, opportunity costs Must evaluate all costs beyond just commission rates
Review frequency Regular and rigorous review of execution quality No specific timeframe mandated, but must be ongoing and documented
Documentation requirement Maintain records showing reasonable diligence in seeking best execution Must document decision-making process and periodic broker evaluations

Example Exam Questions

Test your understanding with these practice questions. Select an answer to see the explanation.

Question 1

Thomas, an investment adviser, needs to execute a 50,000 share order of a thinly traded stock for a client. He evaluates three broker-dealers: Broker X charges $0.02/share commission with guaranteed execution within 1 hour but may cause market impact due to their aggressive trading style. Broker Y charges $0.03/share with a 3-hour execution window but uses algorithms to minimize market impact. Broker Z charges $0.015/share but cannot guarantee execution timeframe or price. The client needs the position established by market close for tax purposes. Which broker best demonstrates best execution for this scenario?

Question 2

Which of the following BEST describes the best execution obligation for investment advisers?

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Question 3

An investment adviser has been routing all client equity trades to a single broker-dealer that charges commissions 15% higher than the industry average. The adviser maintains detailed quarterly reports showing that this broker consistently achieves price improvement averaging $0.03 per share better than the national best bid/offer (NBBO), resulting in net savings for clients despite higher commissions. The adviser reviews execution quality quarterly and documents the analysis. Has the adviser satisfied their best execution obligation?

Question 4

When evaluating best execution for a client transaction, an investment adviser should consider all of the following factors EXCEPT

Question 5

An investment adviser uses multiple broker-dealers to execute client trades and maintains a best execution committee that meets quarterly to review execution quality. The committee analyzes execution data and considers whether to add or remove broker-dealers from the approved list. Which of the following statements about this arrangement are accurate?

1. The adviser must use the broker with the lowest commission on every trade to satisfy best execution
2. Quarterly reviews are sufficient to demonstrate regular and rigorous evaluation of execution quality
3. The adviser must maintain documentation of the committee's analysis and decisions
4. Best execution requires the adviser to guarantee that every trade receives the best possible price

💡 Memory Aid

BEST = Beyond price. Best execution is NOT cheapest execution. Think of buying a flight: Best overall value considers price, Execution time (flight duration), Security of arrival (certainty), and Total costs (baggage fees). The cheapest ticket with 3 layovers is NOT always "best execution" for your trip.

Related Concepts

This term is part of these clusters:

Where This Appears on the Exam

This term is tested in the following Series 65 exam topics: