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SIE practice question: Understanding Trading, Customer Accounts and Prohibited Activities

Understanding Trading, Customer Accounts and Prohibited ActivitiesDifficulty 2/5

A firm fills a customer order from its own inventory rather than finding a counterparty. In what capacity did it act?

  1. AAs principal, because the firm traded from its own account
  2. BAs agent, because the firm traded from its own account
  3. CAs a transfer agent, because the firm traded from its own account
  4. DAs a municipal advisor, because the firm traded from its own account
Show answer and rationale

Correct: A. Principal means trading from the firm's own account and taking the other side. Agency means arranging the trade between the customer and someone else for a commission.

  • B — Acting as agent means arranging a trade with a third party, not supplying the securities itself.
  • C — A transfer agent maintains records of security ownership and does not fill customer orders.
  • D — A municipal advisor advises municipal issuers and has no role in filling a customer order.

Concept being tested

23 of the 75 scored items. Order types and trade capacity, the components of return and the dividend dates, settlement timeframes, corporate actions and their effect on price and cost basis; account types and registrations including retirement accounts; anti-money laundering; books, records and privacy; communications and best interest obligations; and the prohibited activities, from market manipulation and insider trading to the rules on unregistered persons. — 31% of the exam. Study guide for Understanding Trading, Customer Accounts and Prohibited Activities.

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Primary references

  1. Securities Industry Essentials (SIE) Examination Content Outline — Financial Industry Regulatory Authority (FINRA) · primary · retrieved 2026-09-22, verified 2026-09-22
Last reviewed: 2026-10-18Reviewed by: Openverse editorial team, Authoring and fact verificationHow we verify facts