🏦LTB
SIE: Trading & Settlement
SIE practice questioneasyAgent vs. Principal

When a broker-dealer executes a trade on behalf of a customer and charges a commission, it is acting in what capacity?

  1. AAs a principal (dealer)
  2. BAs an agent (broker)✓ Correct answer
  3. CAs an underwriter
  4. DAs a market maker
Explanation

Why BAs an agent (broker)

When a firm acts as an agent (broker), it executes trades on behalf of customers and charges a commission. When acting as a principal (dealer), the firm trades from its own inventory and charges a markup or markdown instead of a commission. This agent vs. principal distinction is fundamental to the SIE exam. A firm cannot act as both agent and principal on the same transaction.

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