The law of large numbers states that the observed random mean from an increasingly large number of observations of a random variable will always approach the distribution mean.
The Gramm-Leach-Bliley Act (GLBA), which is also known as the Financial Services Modernization Act of 1999, provides limited privacy protections against the sale of your private financial information. Additionally, the GLBA codifies protections against pretexting, the practice of obtaining personal information through false pretenses.
As a result, for many years, banks were not legally allowed to act as brokers. Since many regulations have been instituted since the 1930s to protect bank depositors, GLBA was created to allow the financial industry to offer more services.