Diversification
Quick Answer
Diversification spreads investments across issuers, sectors, geographies, or maturities to reduce unsystematic (diversifiable) risk. It does not eliminate systematic market risk, which affects all securities in an asset class. ICA Section 5 defines a diversified fund using the 75-5-10 rule: 75% of assets diversified, no more than 5% per issuer, no more than 10% of an issuer's voting securities.
Once the profile is set, the first portfolio tool in the analytical kit is diversification. The Series 6 exam tests a precise asymmetry: diversification reduces certain kinds of risk and leaves others untouched.
What is diversification?
- Diversification: spreading investments across different asset classes, sectors, geographies, issuers, or maturities to reduce overall portfolio risk
- Diversification reduces unsystematic (non-systematic, diversifiable) risk: the risk unique to a company, sector, or region
- Diversification does not eliminate systematic (market) risk: the risk that affects all investments in the asset class (interest-rate risk, inflation risk, broad market risk)
- The testable asymmetry: diversification handles unsystematic risk only
Think of it this way: Owning one stock exposes you to the whole company's story, good and bad. Owning 200 stocks averages the idiosyncratic stories out, and a product recall or lawsuit at any one company becomes a rounding error. But if a recession hits every sector at once, no amount of diversification across stocks rescues the stock portfolio. That is systematic risk.
Exam Tip: Gotchas
- Diversification reduces unsystematic risk only. Market risk, interest-rate risk, and inflation risk affect all securities in an asset class and cannot be diversified away.
- A customer worried about "the market going down" is worried about systematic risk. Diversification alone is not the answer. Asset allocation across asset classes (stocks, bonds, cash) is the response.
- Unsystematic risk is not compensated. Because diversification eliminates it for free, the market does not pay a premium for bearing it. Only systematic risk earns an expected premium.
What types of diversification do Series 6 products provide?
| Diversification Dimension | How Investment Companies Deliver It |
|---|---|
| Across issuers | A single mutual fund typically holds dozens to hundreds of individual securities; one fund share provides instant issuer-level diversification |
| Across asset classes | Balanced funds (stocks + bonds), target-date funds (glide path), variable annuity sub-account allocations |
| Across sectors | Broad-market index funds spread across all industries; sector funds do not provide sector diversification |
| Across geography | International and global funds hold non-U.S. securities |
| Across maturities | Bond funds may hold short, intermediate, and long-duration bonds |
- A single broad-market index fund can deliver issuer, sector, and partial geographic diversification in one holding
- A balanced or target-date fund adds asset-class diversification (stocks + bonds) inside the same wrapper
- Variable annuity sub-account allocations let the contract owner build diversification across the separate-account menu
Exam Tip: Gotchas
- A sector fund is not diversified across sectors. Concentration within a single industry is the defining feature. Sector funds may still satisfy the ICA 75-5-10 test within their sector, but they expose the investor to industry-concentration risk that a broad-market fund would avoid.
- Balanced and target-date funds give you asset-class diversification in one holding. Recommending a single balanced fund is not the same as recommending a single sector fund.
The ICA Section 5 "Diversified" Fund Definition
The Investment Company Act of 1940 (ICA) gives "diversified" a statutory meaning under Section 5(b)(1). The test is known as the 75-5-10 rule.
- A diversified fund must satisfy the test for at least 75% of its assets:
- No more than 5% of the fund's assets in any single issuer
- No more than 10% of the voting securities of any one issuer held by the fund
- The remaining 25% of assets has no diversification constraint
- A non-diversified fund does not meet the 75-5-10 test and may concentrate in fewer issuers
- The fund's diversification status is a fundamental policy: changing from diversified to non-diversified requires shareholder approval under ICA Section 13(a)
Memory Aid: 75-5-10 = 75% of assets, 5% per issuer, 10% of issuer's voting stock. The remaining 25% is unconstrained.
Exam Tip: Gotchas
- The 75-5-10 rule is the statutory test for "diversified" status under ICA Section 5(b)(1). 75% of assets, no more than 5% in any one issuer, no more than 10% of an issuer's voting securities. The remaining 25% is unconstrained.
- A fund cannot flip from diversified to non-diversified without shareholder approval. ICA Section 13(a) treats the diversification policy as fundamental. The board alone cannot make the change.
- Non-diversified funds are not automatically unsuitable. Many sector funds register as non-diversified to concentrate in their target industry. The label signals concentration risk; it is not a regulatory violation.