2026 Securities Licensing Study Guides (SIE, Series 7 & Series 66) are now live
Investment CompaniesFunction 39 min read

5.1 Investment Company Basics

The Investment Company Act of 1940 regulates entities that pool client funds to purchase securities. Understanding the legal classifications and diversification criteria is a foundation for Series 7 questions.

Key FINRA Exam Takeaways

  • Investment Company Act of 1940 establishes 3 classifications: Face-Amount Certificate Companies, Unit Investment Trusts (UITs), and Management Companies.
  • Management companies are subdivided into Open-End (Mutual Funds) and Closed-End funds.
  • Diversified Investment Company (75-5-10 Rule): At least 75% of assets invested such that no more than 5% is in any one issuer, and the fund holds no more than 10% of any issuer's voting stock.
  • The remaining 25% of assets can be invested in a single issuer without restrictions.

Unit Investment Trusts (UITs)

UITs have no board of directors; they are governed by trustees. They hold a fixed, unmanaged portfolio of stocks or bonds until a specified termination date. Shares are redeemable units of beneficial interest.

The 75-5-10 Diversification Rule

To market a fund as 'diversified', the fund must satisfy the 75-5-10 test at inception. 75% of assets must be diversified with no more than 5% in one company, holding at most 10% of that company's voting shares. The other 25% can be concentrated in one single position.

Knowledge Checkpoint • Section 5.1

Under the Investment Company Act of 1940, what is the maximum percentage of a diversified mutual fund's portfolio that may be invested in a single issuer?