SEC Rule 12d1-4

Section 12(d)(1) of the Investment Company Act was enacted in 1940 in response to Congress's concern about the then-prevalent practice of fund-of-funds investment structures in which registered funds invested primarily or exclusively in other funds, creating pyramided investment structures that produced excessive and duplicative fee layering, obscured the ultimate investments underlying the fund's portfolio, allowed complex webs of affiliated relationships to develop that could be used to exercise controlling influence over entire fund complexes, and made meaningful disclosure to investors about what they were ultimately investing in practically impossible. The 3/5/10 limits — prohibiting any acquiring fund from holding more than 3% of any acquired fund's outstanding voting securities, investing more than 5% of its total assets in any single fund, or investing more than 10% of its total assets in funds generally — were designed as bright-line restrictions preventing the specific abuses that Congress had identified without eliminating the ability of funds to hold modest positions in other funds as portfolio investments.

The decades following Section 12(d)(1)'s enactment, however, produced a fund industry in which fund-of-funds structures had become commercially valuable for legitimate investor-oriented purposes that Congress had not specifically contemplated in 1940 — asset allocation funds targeting specific risk profiles through diversified fund holdings, target-date retirement funds investing in a spectrum of equity and fixed income funds appropriate to different time horizons, and multi-manager platform funds providing access to multiple investment strategies through a single vehicle. These legitimate fund-of-funds products could not operate within the 3/5/10 limits, requiring individual Commission exemptive orders that were costly to obtain, tailored to specific fund complexes, and produced a fragmented regulatory landscape in which functionally identical fund-of-funds arrangements operated under different conditions based solely on the specific order each complex had obtained.

Rule 12d1-4 resolves this fragmentation by providing a single, uniform exemptive framework accessible to all registered fund structures on identical terms, whose conditions are specifically calibrated to address the investor protection concerns that motivated Section 12(d)(1) — fee layering, undue influence over acquired funds, and impenetrable disclosure opacity — without restricting the legitimate fund-of-funds structures that genuinely serve investor interests.

Statutory Authority and Rulemaking History

Rule 12d1-4 derives its statutory authority from Section 12(d)(1)(J) of the Investment Company Act, which was added by the National Securities Markets Improvement Act of 1996 and authorises the Commission to exempt any person, security, or transaction from Section 12(d)(1)'s fund investment limits by rule, if and to the extent that the exemption is consistent with the public interest and the protection of investors. Section 12(d)(1)(J)'s specific grant of exemptive rulemaking authority for fund investment limits is the direct statutory foundation for Rule 12d1-4's comprehensive standing exemption.

The Commission first proposed a comprehensive fund-of-funds rule in December 2018 — Investment Company Act Release No. IC-33384 — following decades of administering individual exemptive orders and the Commission staff's comprehensive study of the fund-of-funds landscape. The final rule was adopted October 7, 2020 — Investment Company Act Release No. IC-34045, published at 85 FR 73924, November 19, 2020 — with an effective date of January 19, 2021 and a compliance date of January 19, 2022. On January 19, 2022, the Commission simultaneously rescinded Rule 12d1-2 — the prior rule permitting Section 12(d)(1)(G) funds to invest in other funds — and rescinded the individual exemptive orders that had governed fund-of-funds arrangements for complexes that were eligible to rely on Rule 12d1-4. No substantive amendments to Rule 12d1-4 have been adopted since its October 2020 adoption — no changes have been made up to the present time.

Key Provisions and Operative Requirements

Rule 12d1-4(a) establishes the foundational exemptive relief and the categories of entities eligible to serve as acquiring and acquired funds. The rule exempts from Sections 12(d)(1)(A) and 12(d)(1)(C) the acquisition by an acquiring fund of securities issued by an acquired fund, subject to the rule's conditions. The eligible acquiring fund categories encompass every type of registered investment company — open-end mutual funds, Exchange-Traded Funds, closed-end funds, unit investment trusts — and BDCs. The eligible acquired fund categories are equally broad — any registered investment company or BDC may serve as an acquired fund. This universality is one of Rule 12d1-4's most commercially significant features: any fund may invest in any other fund beyond the 3/5/10 limits, regardless of the structural category of either the acquiring or acquired fund, provided the rule's conditions are met.

Rule 12d1-4(a)(3) contains the specific ETF affiliation provision that was critical to enabling ETF-of-ETF structures and multi-asset allocation funds using ETFs as portfolio components. An acquiring fund that is an affiliated person of an Exchange-Traded Fund solely because the acquiring fund's investment adviser also acts as the ETF's investment adviser, or because the acquiring fund holds more than 25% of the ETF's outstanding shares as a result of a decrease in the total shares outstanding due to shareholder redemptions — the circumstances described in Rule 6c-11(b)(3)(i) and (ii) — may deposit and receive the ETF's creation and redemption baskets notwithstanding the affiliated person restrictions that would otherwise prohibit such transactions. This provision directly enables the in-kind creation and redemption mechanics through which ETF-of-ETF structures operate, since without it the acquiring fund's affiliation with an ETF could prevent it from participating in the creation and redemption process that is fundamental to ETF market structure and that Rule 6c-11 governs.

Rule 12d1-4(b) establishes the four categories of conditions that must be satisfied for the exemption to be available.

The first category addresses control and voting limits on the acquiring fund's holdings in any acquired fund. An acquiring fund and its advisory group — defined to include the fund's investment adviser, any person controlling or controlled by or under common control with that adviser, and any investment company advised by the adviser — may not, in the aggregate, hold more than 25% of the outstanding voting securities of an acquired fund. If the acquiring fund holds more than 25% of an acquired fund's outstanding voting securities, the acquiring fund must vote those shares in the same proportion as the vote of all other holders of such securities — a mirror-voting or echo-voting requirement that prevents the acquiring fund from exercising control over the acquired fund's governance notwithstanding its large ownership position. This control limitation is directly responsive to Section 12(d)(1)'s primary investor protection concern — the risk that large acquiring funds could exercise controlling influence over acquired funds and use that influence to the detriment of the acquired funds' other shareholders.

The second category requires evaluations and findings by the investment advisers to both the acquiring and acquired funds before the initial acquisition beyond the 3/5/10 limits. The acquiring fund's investment adviser must evaluate the complexity and costs of the fund-of-funds arrangement and find that: the advisory fees charged to the acquiring fund are consistent with the acquiring fund's fiduciary duties to its shareholders; the acquiring fund's investment in the acquired fund is consistent with the acquiring fund's investment objectives and policies; and the fund-of-funds arrangement will not result in undue influence by the acquiring fund or its investment adviser over the acquired fund's investment decisions. The acquired fund's investment adviser must evaluate the fund-of-funds arrangement and find that the acquiring fund's investment in the acquired fund: will not significantly dilute or otherwise disadvantage the interests of the acquired fund's other shareholders; will not interfere with the acquired fund's ability to comply with its fundamental investment restrictions and policies; and will not result in an excessive layering of fees and expenses that would be harmful to the acquired fund's shareholders.

These dual adviser evaluation and finding requirements are the rule's primary mechanism for addressing the investor protection concerns that motivated Section 12(d)(1)'s original enactment — they require each fund's fiduciary to affirmatively assess and document whether the fund-of-funds arrangement serves its own fund's shareholders before the arrangement proceeds, rather than permitting fund complexes to structure fund-of-funds products purely in the interest of the management company without considering the impact on either the acquiring or acquired fund's shareholders.

Rule 12d1-4(c) establishes the fund of funds investment agreement requirement. Unless the acquiring fund's investment adviser also acts as the acquired fund's investment adviser and is not acting as a sub-adviser to either fund — the intra-complex situation where the dual fiduciary relationship provides an internal constraint on abusive arrangements — the acquiring fund must enter into a written fund of funds investment agreement with the acquired fund before making any investment in the acquired fund in excess of the 3/5/10 limits. The agreement must contain three specified provisions: any material terms regarding the acquiring fund's investment in the acquired fund necessary to support the adviser findings required under the second condition category; a termination provision whereby either party may terminate the agreement on no more than 60 days' advance written notice; and a requirement that the acquired fund provide the acquiring fund with information on its fees and expenses reasonably requested by the acquiring fund for the purpose of satisfying applicable disclosure obligations.

The 60-day maximum termination notice requirement is an investor protection condition ensuring that an acquiring fund that determines the fund-of-funds arrangement is no longer appropriate can exit within a commercially reasonable timeframe without being trapped in the arrangement by lengthy contractual lock-ups. The fee information requirement ensures that the acquiring fund can satisfy its own disclosure obligations to its shareholders regarding the layered fees and expenses they incur through the fund-of-funds structure — information that Rule 12d1-4 treats as fundamental to investor protection in the fund-of-funds context.

Rule 12d1-4(d) establishes the acquired fund's own limitations on fund investments — the provision that prevents complex three-tiered and deeper fund-of-funds structures that would make meaningful investor disclosure impossible. An acquired fund that is an open-end management investment company or a UIT may not invest more than 10% of its total assets in securities of other investment companies or private funds — the 10% bucket — unless it qualifies for specific exceptions including master-feeder arrangements, money market fund investments, investments in ETFs, and certain other specified categories. This 10% bucket limitation is one of Rule 12d1-4's most commercially significant structural constraints, since it prevents the creation of deeply nested fund-of-funds pyramids in which an acquired fund itself invests substantially in other funds, creating multiple tiers of fee layering and disclosure complexity that would undermine the rule's investor protection objectives.

The Division of Investment Management's March 5, 2026 FAQs addressed an important question regarding the 10% bucket: debt securities issued by collateralized loan obligations do not count toward the 10% limitation, even where the CLO might be considered an investment company, because CLO debt securities represent debt obligations rather than equity interests in the CLO structure. This clarification has significant commercial implications for fixed income funds that hold CLO tranches as portfolio investments and that participate in fund-of-funds arrangements as acquired funds.

Rule 12d1-4(e) establishes the recordkeeping requirements. Acquiring and acquired funds relying on the rule must maintain and preserve for at least five years — the first two in an easily accessible place — copies of each fund-of-funds investment agreement in effect or that was in effect at any time during the past five years; written records of the board and adviser evaluations and findings required by the rule; and, where applicable, the certification from each insurance company holding shares in a variable insurance product context.

Scope of Application

Rule 12d1-4 applies to the complete universe of registered investment company and BDC fund-of-funds arrangements — any situation in which a registered fund or BDC acquires securities of another registered fund or BDC in amounts exceeding Section 12(d)(1)'s 3/5/10 limits. The rule's universal acquiring and acquired fund eligibility — permitting ETFs, mutual funds, closed-end funds, UITs, and BDCs to participate in any combination as both acquiring and acquired funds — represented a significant structural expansion relative to the prior exemptive order regime, which had imposed different conditions on different fund type combinations and had not always permitted all fund structure combinations to participate.

Private funds and unregistered investment companies — including foreign offshore funds and hedge funds — are not eligible to serve as acquiring or acquired funds under Rule 12d1-4, which applies exclusively to registered investment companies and BDCs. A registered fund seeking to invest beyond the 3/5/10 limits in a private fund must seek an individual Commission exemptive order under Section 12(d)(1)(J) rather than relying on Rule 12d1-4's standing exemption.

Relationship to Related Rules and Regulations

Rule 12d1-4's ETF affiliation provision — Rule 12d1-4(a)(3) — directly and explicitly cross-references Rule 6c-11(b)(3)(i) and (ii), making the ETF Rule's affiliation circumstances the operative standard for determining when an acquiring fund may engage in creation and redemption basket transactions with an affiliated ETF under Rule 12d1-4's exemptive framework. This cross-reference integrates the fund-of-funds framework with the ETF Rule's creation and redemption structure in a manner that enables ETF-of-ETF products and multi-asset allocation funds using ETFs as portfolio components to function without affiliation-based impediments.

Rule 12d1-4's adviser evaluation and finding requirements connect to the general fiduciary framework applicable to registered investment advisers under the Investment Advisers Act. The investment adviser's finding that a fund-of-funds arrangement does not result in undue influence, excessive fee layering, or harm to either fund's shareholders is an application of the adviser's general fiduciary obligation to act in its client funds' best interests — Rule 12d1-4 operationalises that general obligation into specific documented findings that the examination programme can assess and that create a record supporting the adviser's compliance with both the rule and its general fiduciary duty.

Rule 38a-1's compliance programme framework requires that registered fund compliance programmes specifically address Rule 12d1-4 compliance — including the adviser evaluation and finding requirements, the fund-of-funds agreement obligations, and the acquired fund's 10% bucket limitation. The chief compliance officer's annual report to the board under Rule 38a-1 must address any material compliance matters relating to fund-of-funds arrangements, including any cases in which the initial adviser findings were not made before an investment exceeding the 3/5/10 limits was made, or in which the fund-of-funds agreement did not contain all required provisions.

Rule 35d-1's Names Rule applies to ETF-of-ETF funds and multi-asset allocation funds investing in other funds whose names incorporate characteristic or investment-type terms — a growing commercial segment following Rule 12d1-4's adoption. An ETF whose name suggests a particular type of investment focus achieved through holdings in other ETFs must maintain an 80% investment policy consistent with that name, with the 80% basket's treatment of derivative and indirect exposures through acquired fund holdings requiring specific analysis.

Rule 22e-4's liquidity risk management framework applies to acquiring funds investing in other funds under Rule 12d1-4, requiring that the liquidity risk management programme specifically assess the liquidity of the acquired fund interests held by the acquiring fund — including the liquidity of ETF shares that may be held as acquired fund interests, which present different liquidity characteristics from open-end mutual fund shares given the ETF's secondary market trading and creation and redemption mechanics.

Amendment History and Regulatory Evolution

Rule 12d1-4 has not been formally amended since its October 2020 adoption — no changes have been made to its operative provisions up to the present time. The most significant post-adoption regulatory developments have been interpretive rather than formal amendments.

The Commission's rescission of individual exemptive orders on January 19, 2022 — the compliance date — completed the transition from the prior fragmented regime to the uniform rule-based framework, standardising the conditions applicable to fund-of-funds arrangements across all fund complexes and eliminating the competitive disparities that had existed when different complexes operated under different conditions based on the specific terms of their individual orders.

The March 5, 2026 Division of Investment Management FAQs — the most recent authoritative interpretive guidance on Rule 12d1-4 — addressed four specific questions that had generated industry uncertainty since the rule's adoption, including the investment agreement requirement's application to previously acquired funds, the CLO debt securities question, and related structural questions. These FAQs, while not formal rule amendments, provide the interpretive framework that practitioners and examination staff use to assess compliance with Rule 12d1-4's conditions.

Enforcement Context and SEC Action Patterns

Rule 12d1-4 enforcement has concentrated on the adviser evaluation and finding requirements — the conditions that are most likely to be inadequately documented or procedurally incomplete in the initial implementation of a fund-of-funds arrangement. The Commission's examination programme has focused on whether the adviser evaluations and findings required before the initial acquisition beyond the 3/5/10 limits were actually conducted and documented before the investment occurred, rather than being prepared retroactively to satisfy examination requests.

The fund-of-funds investment agreement requirement has also been an examination focus, particularly for arrangements between unaffiliated acquiring and acquired funds where the agreement requirement is mandatory and its absence is a clear compliance failure. Examinations have identified cases where acquiring funds made investments exceeding the 3/5/10 limits in acquired funds without having entered into the required fund-of-funds investment agreement, or where existing agreements lacked the required termination provision or fee information provision.

Examination Relevance and Key Takeaways

Rule 12d1-4 is examined at the Series 65 level as the foundational framework governing fund-of-funds arrangements under the Investment Company Act. The three Section 12(d)(1) limits that the rule permits acquiring funds to exceed — 3% of an acquired fund's outstanding voting securities, 5% of total assets in any single fund, and 10% of total assets in funds generally — and the four categories of conditions that must be satisfied to exceed those limits are the primary structural examination content.

The ETF-specific provision — permitting an acquiring fund affiliated with an ETF solely through the Rule 6c-11 authorised participant relationship to engage in basket transactions with that ETF — is a specifically examined connection between the fund-of-funds framework and the ETF Rule's creation and redemption structure, illustrating how Rule 12d1-4 was specifically designed to accommodate ETF market mechanics.

The key points to retain are these. Rule 12d1-4 permits any registered investment company or BDC to acquire securities of any other registered investment company or BDC in excess of Section 12(d)(1)'s 3/5/10 limits without an individual exemptive order. Four condition categories must be satisfied: aggregate holdings in any acquired fund may not exceed 25% of voting securities, with any excess subject to echo-voting; investment advisers to both acquiring and acquired funds must make documented findings that the arrangement does not cause undue influence, excessive fee layering, or shareholder harm; acquiring and acquired funds must enter into a written investment agreement containing material terms, a 60-day-maximum termination provision, and a fee information obligation — unless both funds share the same adviser in a non-sub-advisory relationship; and acquired funds that are open-end management companies or UITs may not invest more than 10% of their total assets in other investment company securities and private funds absent specific exceptions. Acquiring funds affiliated with ETFs solely through authorised participant relationships may engage in basket transactions under Rule 6c-11. Rule 12d1-2 was rescinded and individual exemptive orders were rescinded on January 19, 2022. The Division of Investment Management published FAQs on March 5, 2026 addressing investment agreement requirements and CLO debt securities. No changes have been made to Rule 12d1-4's operative provisions up to the present time.