Uniform Securities Agent State Law (Series 63) Practice Exam 2025 - Free Series 63 Practice Questions and Study Guide

In the context of brokerage, "commingling" refers to the practice of mixing personal securities with those of the firm. This can pose significant ethical and legal issues, as it may lead to a conflict of interest and can compromise the integrity of client assets. Broker-dealers are required to maintain strict separation between their own financial activities and those of their clients to protect investor interests and ensure compliance with regulatory standards.

By combining personal and professional assets, a broker could potentially misuse client funds or make decisions that benefit themselves at the expense of their clients. This reinforces the necessity of maintaining clear boundaries in financial transactions to promote transparency and trustworthiness in the brokerage industry.

While the other options pertain to various unethical or unauthorized activities within the financial services realm, they do not accurately define "commingling." Each of those activities involves different misconduct issues rather than the specific act of mixing personal and firm securities.