Regulatory agencies, FINRA. Now, FINRA is an acronym for the Financial Industry Regulatory Authority. Now, despite being authorized by Congress, FINRA is not officially part of the government. It is the largest independent regulator of the securities industry here in the US. It is a self-regulatory organization or also known as an SRO. Now, what does that mean? Well, that means that all broker-dealers and brokerage firms have essentially joined together to create a firm to regulate themselves, hence self-regulatory organization. Now, all brokerage firms in the US must be registered with FINRA. Additionally, all brokers within the brokerage firms must also be registered with FINRA and pass qualifying exams and be licensed by FINRA. A Series 7 exam, for example, is a widely-taken exam that's conducted by FINRA. Now, what are the key functions of FINRA? Well, the more obvious one is that it's there to write and monitor and enforce securities laws. And it does that by examining firms, brokerage firms, for compliance on a periodic basis. And when FINRA examines firms, it can punish individuals or entire firms through fines, suspensions, or even expel them from the securities industry completely for any wrongdoing. FINRA is also there to foster market transparency and to educate investors so they ensure that product advertisements used by broker-dealers are truthful and not misleading. They ensure that any security product sold to an investor is suitable for that investor's needs. And they also see to that investors receive complete disclosure about any investment product before they are purchased.