Unlike other insurance providers, an insurance broker works for you rather than an insurance company. Brokers use their professional knowledge and. Broker definition, an agent who buys or sells for a principal on a commission basis without having title to the property. What's Left of Obama's Mideast Policy?. What is ' Broker '. A broker is an individual or firm that charges a fee or commission for executing buy and sell orders submitted by an investor. 2. The role of a firm. Sophisticated content for disziplinen olympische spiele advisors around investment strategies, industry trends, and advisor education. In many jurisdictions, particularly in the United Statesa license is required to be a real estate broker. To be a stockbroker in the United States, you must pass two licensing examinations from the National Association of Securities Dealers NASD: Brokers and Online Trading: Assessing your individual needs and obtaining quotes.