The Investment Company Act of 1940 (commonly referred to as the '40 Act) is an act of Congress which regulates investment funds. It was passed as a United States Public Law (Pub. L. 76–768) on August 22, 1940, and is codified at 15 U.S.C. §§ 80a-1–80a-64. Along with the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, and extensive rules issued by the U.S. Securities and Exchange Commission; it is central to financial regulation in the United States. It has been updated by the Dodd-Frank Act of 2010. It is the primary source of regulation for mutual funds and closed-end funds, now a multi-trillion dollar investment industry.[1] The 1940 Act also impacts the operations of hedge funds, private equity funds and even holding companies.