Limits on Funds Investing in Other Funds, the 3-5-10 Test, Rule 12d1-4 and What the Exam Tests

Section 12(d)(1) of the Investment Company Act of 1940 limits how much one investment company can invest in another. It is the rule behind every fund of funds, and it exists to stop funds from piling layer upon layer of fees and control on top of each other.

The core limits are known as the 3-5-10 test. A registered fund generally cannot own more than 3% of another fund’s voting shares, put more than 5% of its assets into any one fund, or put more than 10% of its assets into funds overall.

This guide covers what Section 12(d)(1) prohibits, why Congress wrote it, the statutory exceptions, the SEC rules that allow funds to go further, worked examples, the exam traps and five practice questions. Preparing for your exam? Watch FRC’s Series 65 playlist on YouTube, with exam traps called out in every topic.

Why Congress Restricted Funds of Funds

In the 1920s and 1930s, some sponsors built pyramids of funds, with one fund owning large stakes in another and that fund owning stakes in a third. Control of a small top fund could give a sponsor control of large pools of other people’s money further down the chain.

Investors paid fees at every level, often without seeing the total. The structures were also hard to understand, and a large holder at the top could threaten sudden redemptions to pressure the funds below it.

The SEC identified these abuses in its study of the industry, and Congress responded with Section 12(d)(1) in 1940. Congress tightened it further in 1970 after a new wave of funds of funds appeared in the 1960s.

Where This Topic Appears on the Exams

Funds of funds appear in the investment vehicles section of the Series 65, alongside fund structures, fees and share classes. Questions test the purpose of the limits, the layered fees and how investors are protected.

FRC’s Series 65 Exam Preparation course covers investment companies, fund costs and the 1940 Act, and the exam requires no sponsor. The SIE Examination Preparation course introduces the fund types these rules apply to.

Every FRC course can be spread across interest-free monthly payments, so cost is no reason to delay. The 3-5-10 numbers are easy to learn once, and they turn into dependable marks on test day.

The Three Limits in Section 12(d)(1)(A)

Section 12(d)(1)(A) is the main restriction on the buyer, called the acquiring fund. A registered fund, together with the companies it controls, generally cannot buy shares of another investment company if, afterwards, it would own more than 3% of the acquired fund’s total outstanding voting stock.

The second limit is 5%. The acquiring fund cannot have more than 5% of its own total assets invested in securities of any one investment company.

The third limit is 10%. The acquiring fund cannot have more than 10% of its total assets invested in securities of investment companies as a group.

All three limits apply together, and whichever is tightest controls the purchase. The 3% limit also reaches private funds and other unregistered investment companies buying shares of a registered fund.

The Limits on the Selling Side

Section 12(d)(1)(B) restricts the seller. A registered open-end fund, its principal underwriter and any registered broker-dealer cannot knowingly sell the fund’s shares to another investment company if the buyer would then own more than 3% of the fund’s voting stock.

They also cannot make the sale if investment companies as a group would then own more than 10% of the fund’s voting stock. This protects open-end funds from being dominated by other funds that could redeem large blocks of shares at short notice.

Section 12(d)(1)(C) adds a limit for closed-end funds. An investment company, together with other funds advised by the same adviser, cannot own more than 10% of a registered closed-end fund’s voting stock.

The Problems the Limits Address

The first problem is layered fees. When a fund invests in other funds, its investors pay the top fund’s fees and their share of every underlying fund’s fees as well.

The second problem is undue influence. A large fund holding a big stake in another fund can threaten to redeem, forcing the acquired fund to sell holdings at a bad time or bend to the acquiring fund’s wishes.

The third problem is complexity. Investors may not understand what they own when assets sit several layers down, and the true cost and risk can be hard to see.

Statutory Exceptions

Section 12(d)(1)(E) allows master-feeder structures. A feeder fund can invest all of its assets in a single master fund, provided it holds no other investment securities and meets voting and other conditions.

Section 12(d)(1)(F) allows a fund to buy small positions in many funds. The acquiring fund and its affiliates together may own no more than 3% of any one acquired fund, with limits on sales charges and on the acquired fund’s obligation to redeem large amounts quickly.

Section 12(d)(1)(G) allows funds of funds within the same group of investment companies. The acquiring fund may invest in affiliated funds, government securities and short-term paper, subject to conditions designed to prevent excessive distribution fees.

Rule 12d1-1: Investing Cash in Money Market Funds

Funds often hold cash waiting to be invested, and parking it in a money market fund is efficient. Rule 12d1-1 lets a fund invest in a money market fund beyond the Section 12(d)(1) limits.

The main condition is that the acquiring fund cannot pay a sales charge or a service fee on those shares, or its adviser must waive fees to offset them. This stops the cash sweep from becoming a source of layered charges.

The rule also allows investment in certain unregistered money market funds that operate like registered ones. It is one of the most widely used exemptions in fund management.

Rule 12d1-4: The Modern Fund of Funds Framework

For decades, many funds of funds relied on individual SEC exemptive orders. In 2020 the SEC adopted Rule 12d1-4, which replaced most of those orders with a single framework that funds could rely on without applying.

Rule 12d1-4 allows registered funds, including mutual funds, unit investment trusts, closed-end funds and business development companies, to exceed the 3-5-10 limits if they meet conditions. Funds had to comply with the new rule by January 2022, when the older orders were rescinded.

The conditions fall into four groups. Each one targets a problem that Section 12(d)(1) was written to prevent.

The Four Conditions of Rule 12d1-4

The first condition is control and voting. Outside the same fund group, the acquiring fund and its advisory group cannot control the acquired fund, and if they hold more than 25% of an open-end fund or more than 10% of a closed-end fund, they must vote those shares in the same proportion as other holders or pass the vote through.

The second condition is findings. The acquiring fund’s investment adviser must evaluate the complexity of the structure and the aggregate fees before investing, and the acquired fund’s adviser must find that any undue influence concerns are addressed.

The third condition is a fund of funds investment agreement when the two funds are not in the same group of investment companies. The fourth limits three-tier structures, so an acquired fund generally cannot invest more than 10% of its own assets in other funds.

How Exchange-Traded Funds Fit In

Many funds of funds now invest in exchange-traded funds, and many ETFs invest in other funds. Purchases of ETF shares on an exchange are still purchases of investment company securities, so the 3-5-10 limits apply.

ETFs operate under Rule 6c-11, which covers how they are structured and traded. Fund of funds investing in ETFs beyond the statutory limits now generally relies on Rule 12d1-4.

This is why a model portfolio built entirely from ETFs inside a registered fund needs a fund of funds analysis. The wrapper does not change the investment company status of what it holds.

How Layered Fees Are Disclosed

Investors in a fund of funds must be able to see the full cost. The fee table in the fund’s prospectus includes a line called acquired fund fees and expenses, which shows the indirect cost of the underlying funds.

That line is added to the fund’s own expenses to produce the total annual operating expense ratio. Investors can then compare a fund of funds with a fund that holds securities directly.

Distribution charges also count. Rule 12b-1 fees and sales loads charged at more than one level are restricted by the statutory exceptions and by FINRA’s sales charge rules, and FRC’s guide to what front-end load means explains how those charges work.

Common Fund of Funds Structures

Target-date funds are the best-known example. A 2050 target-date fund typically invests in a set of the sponsor’s stock and bond funds and shifts the mix towards bonds as 2050 approaches.

Asset allocation funds work in a similar way, holding several underlying funds to deliver a set risk level. Multi-manager funds of funds may hold funds from several different fund groups.

Master-feeder structures are different again. Several feeder funds, often aimed at different investor types, pool their assets in one master fund that holds the actual portfolio.

Worked Example: Applying the 3-5-10 Test

Fund X has $1 billion in total assets and wants to invest in Fund Y, which has $400 million in outstanding voting shares. Under the 5% limit, Fund X can put up to $50 million into Fund Y, and under the 10% limit it can hold up to $100 million in all funds combined.

The 3% limit is the tightest. Three percent of Fund Y’s $400 million is $12 million, so Fund X can buy only $12 million of Fund Y without an exception or exemption.

If Fund X wants to buy $40 million of Fund Y, it would need to rely on Rule 12d1-4 or a statutory exception. Without one, the purchase would breach Section 12(d)(1)(A).

Worked Example: Total Cost of a Fund of Funds

A balanced fund of funds charges 0.25% a year for its own management and operations. Its underlying funds charge a weighted average of 0.55% a year.

The prospectus fee table shows 0.55% as acquired fund fees and expenses, and the total annual operating expenses are 0.80%. On a $50,000 investment, that is $400 a year rather than the $125 the top-level fee alone would suggest.

An adviser recommending the fund must look at the 0.80% figure. Comparing only the top-level fee would understate the cost to the client by more than two thirds.

Worked Example: The Cash Sweep

An equity fund holds $30 million in cash from new subscriptions while its manager finds investments. The fund buys shares of a money market fund in the same fund group, an amount well above the 3% and 5% limits.

The purchase is permitted under Rule 12d1-1 because the money market fund charges no sales load or service fee to the equity fund. The equity fund earns a return on its cash while it waits to invest.

If the money market fund did charge a service fee, the equity fund’s adviser would need to waive an equal amount of its own fee. The rule keeps the convenience without adding a hidden layer of cost.

What It Means for an Adviser’s Recommendations

An investment adviser recommending a fund of funds owes the client a fiduciary duty, including a duty of care. That means understanding the total cost, the underlying holdings and whether a simpler and cheaper option would serve the client as well.

Funds of funds can be suitable, especially for clients who want a single diversified holding that rebalances automatically. The question is whether the convenience is worth the extra layer of cost for that client.

The 1940 Act also controls other conflicts in fund management. FRC’s guide to what Section 17(a) of the 1940 Act is covers the ban on principal trades between funds and their affiliates.

The Exam Traps

The first trap is mixing up the numbers. Remember 3% of the acquired fund’s voting stock, 5% of the acquiring fund’s assets in one fund and 10% of its assets in all funds.

The second trap is forgetting whose assets each percentage refers to. The 3% limit is measured against the acquired fund, while the 5% and 10% limits are measured against the acquiring fund’s own total assets.

The third trap is ignoring layered fees. A question about the cost of a fund of funds expects the total, including acquired fund fees and expenses, not the top-level fee alone. The fourth trap is assuming ETFs are outside the rule, when buying ETF shares is buying investment company securities.

For more traps in this area, see FRC’s guide to Series 65 investment vehicles questions and exam traps. For the full list, see FRC’s guide to Series 65 exam traps and common mistakes.

A Memory Aid

Remember “3 of them, 5 in one, 10 in all.” That covers the three limits in Section 12(d)(1)(A).

For the purpose of the rule, remember “fees, control, confusion.” Those are the three problems Congress set out to prevent.

Practice Questions

Question one: what is the maximum percentage of another fund’s outstanding voting stock a registered fund can generally acquire under Section 12(d)(1)(A)? Three percent.

Question two: what is the maximum percentage of its total assets a registered fund can generally invest in all other investment companies combined? Ten percent.

Question three: which SEC rule lets a fund invest its cash in a money market fund beyond the Section 12(d)(1) limits? Rule 12d1-1.

Question four: a fund of funds has a 0.20% management fee and 0.60% of acquired fund fees and expenses. What total annual cost should an adviser consider? 0.80%.

Question five: which SEC rule, adopted in 2020, created the general framework allowing funds of funds to exceed the statutory limits? Rule 12d1-4.

Related Questions

Funds of funds can hold both open-end and closed-end funds, and the limits differ for each. FRC’s guide to open-end vs closed-end funds explains how the two structures work.

Get Exam-Ready

Fund of funds questions reward candidates who know the numbers and the reasons behind them. The FRC Series 65 playlist linked at the top of this guide covers every exam section, with the traps to look out for in each one.

The FRC dictionary is more than a dictionary. It is a library of explainer videos, written explanations and on-page quizzes covering the FINRA and SEC rules you are tested on, so you can open any term and go deeper whenever a question catches you out.

Study With FRC

FRC’s programs and memberships are open to everyone. Whether you are preparing for the Series 65, the SIE or both, structured exam preparation turns topics like the 1940 Act into marks you can rely on.

FRC’s Professional Membership adds verified progress and a Digital Profile, so when you apply for roles, employers can see your exam progress and the knowledge you are building, not just read about it on a resume.

Your Next Step

Section 12(d)(1) of the Investment Company Act limits funds investing in other funds to 3% of the acquired fund, 5% of assets in one fund and 10% of assets in all funds. Statutory exceptions, Rule 12d1-1 for money market funds and Rule 12d1-4 for funds of funds allow more, with conditions that tackle layered fees, undue influence and complexity.

Remember “3 of them, 5 in one, 10 in all,” and you will be ready for every version of this question the exam can ask.