FINRA Rule 3210: Accounts at Other Broker-Dealers

Beyond state registration, agents are also subject to FINRA rules that promote transparency between the agent and their employer. Rule 3210 ensures that employer broker-dealers (BDs) know about every account where their agents can trade securities.

An associated person (agent) may NOT open or maintain a securities account at another broker-dealer or financial institution without prior written consent of the employer member (their BD).

Before establishing the account, the agent must also notify in writing the executing member (or other financial institution) of the agent's association with the employer BD.

Covered Accounts

Rule 3210 covers more than just the agent's personal account. It applies to any account in which the agent has a beneficial interest, including:

  • The agent's spouse's accounts
  • Minor children residing in the same household
  • Any person to whom the agent provides material financial support
  • Any account over which the agent has trading authority or control

Exam Tip: Gotchas

  • Rule 3210 covers family and controlled accounts, not just the agent's own. A spouse's account, a dependent's account, or any account the agent controls (even a friend's account if the agent has trading authority) triggers notification requirements.

Pre-Existing Accounts

If the account existed before the agent joined the firm:

  • The agent has 30 days to obtain written consent from the employer
  • The agent must also notify the other institution of the new employment association within the same 30-day period

Duplicate Statements and Confirmations

  • The employer BD may request duplicate copies of confirmations and account statements from the executing member/institution
  • The executing member must comply with such requests

Exam Tip: Gotchas

Rule 3210 is about transparency; the employer BD must know about all outside accounts where the agent can trade securities. The rule covers not just the agent's own accounts but also spousal accounts and accounts over which the agent exercises control. Failure to disclose an outside account is a violation.