Investment Company Act of 1940

The Investment Company Act of 1940 is the primary federal law governing mutual funds, exchange-traded funds (ETFs), closed-end funds, and other pooled investment vehicles. It imposes registration requirements, board governance standards, restrictions on affiliated transactions, capital structure limits, and disclosure obligations on investment companies — protecting the more than 100 million American households that invest through these vehicles.

Current Law (2026)

Legal Authority

• 15 U.S.C. § 80a-1 — Findings and policy (Congress finds that investment companies are affected with a national public interest and that regulation is necessary to protect investors from conflicts of interest, excessive fees, and mismanagement)
• 15 U.S.C. § 80a-3 — Definition of investment company (defines what entities are investment companies subject to regulation, with exclusions for banks, insurance companies, and certain private funds)
• 15 U.S.C. § 80a-10 — Board composition (at least 40% of directors must be non-interested persons; imposes restrictions on affiliated persons serving as officers and employees)
• 15 U.S.C. § 80a-13 — Changes in investment policy (prohibits changing fund classification, investment policies, or other fundamental matters without majority shareholder vote)
• 15 U.S.C. § 80a-15 — Advisory contracts (investment advisory agreements must be written, approved initially by shareholders, and renewed annually by the board; the board must evaluate whether fees are reasonable)
• 15 U.S.C. § 80a-17 — Affiliated transactions (broadly restricts transactions between the fund and its affiliated persons — advisers, officers, directors — to prevent self-dealing)
• 15 U.S.C. § 80a-18 — Capital structure (limits leverage for closed-end funds; open-end funds generally may not issue senior securities)
• 15 U.S.C. § 80a-22 — Distribution and redemption (open-end funds must redeem shares at NAV within 7 days of tender)
• 15 U.S.C. § 80a-35 — Breach of fiduciary duty (creates a cause of action for breach of fiduciary duty regarding compensation paid to investment advisers — the basis for "excessive fee" litigation)

How It Works

The Investment Company Act creates a comprehensive regulatory framework tailored to the unique risks of pooled investment vehicles. When investors pool their money into a fund managed by a professional adviser, the potential for conflicts of interest, self-dealing, and excessive fees is substantial. The Act addresses these risks through structural protections rather than relying solely on disclosure.

Board governance is the Act's primary protective mechanism. Every registered investment company — regulated alongside investment advisers ��� must have a board of directors, and at least 40% must be "non-interested persons" — independent of the fund's investment adviser and its affiliates. These independent directors serve as watchdogs for shareholders. Their most important duty: annually evaluating and approving the fund's advisory contract, including whether the fees charged are reasonable. This annual review is the primary check on advisory fees.

Affiliated transaction restrictions prevent the most direct forms of self-dealing. The fund's adviser, officers, directors, and their affiliates are broadly restricted from engaging in transactions with the fund — buying securities from the fund, selling securities to the fund, or borrowing from the fund. These restrictions can only be relaxed through SEC exemptive orders, ensuring regulatory oversight of any affiliated dealings.

Shareholder voting rights protect investors from fundamental changes they didn't sign up for. Changes to a fund's classification (e.g., from diversified to non-diversified), investment policies, and advisory arrangements require majority shareholder approval. The fund manager can't unilaterally transform the product investors purchased.

Redemption rights are critical for open-end funds (mutual funds and most ETFs): shareholders must be able to redeem their shares at net asset value within 7 days. This liquidity guarantee distinguishes mutual funds from other investment vehicles and gives investors an exit mechanism if they disagree with management decisions.

The Act's fiduciary duty provision (§ 80a-35) creates a private right of action for shareholders who believe their fund's advisory fees are excessive. This provision, interpreted by the Supreme Court in Jones v. Harris Associates (2010), requires courts to evaluate whether fees bear a reasonable relationship to the services provided.

How It Affects You

If you're a mutual fund or ETF investor: The Investment Company Act works in the background of every mutual fund and ETF you own — but understanding a few of its mechanisms helps you use them. The board's annual advisory contract review is the primary check on fees: the independent directors must evaluate whether the expense ratio is reasonable compared to what the adviser charges other clients. This process has contributed to a long-term compression in fund fees — index fund expense ratios have fallen from 0.5–1.0% in the 1990s to 0.03–0.20% today at the largest providers. For actively managed funds charging 0.8–1.5%, the difference compounds dramatically: $50,000 invested over 30 years at 7% gross return loses approximately $43,000 in cumulative wealth at a 1.2% fee vs. a 0.03% fee — the independent directors are theoretically preventing worse. Read your proxy materials — when a fund wants to change fundamental policies (investment strategy, classification from diversified to non-diversified), it requires majority shareholder vote under § 80a-13 and will show up in a proxy ballot. Most investors ignore these and lose their say. The 7-day redemption requirement means you can always exit an open-end mutual fund at NAV within one week — a protection that doesn't exist for hedge funds or private equity. Bitcoin and Ethereum ETFs approved in 2024 are now registered under this Act and carry the same structural protections.

If you're a fund manager, adviser, or launching a new fund: The Act's affiliated transaction restrictions under § 80a-17 are sweeping and require careful compliance architecture. Any transaction between the fund and an affiliated person — defined broadly to include the adviser, affiliates of the adviser, 5%+ shareholders, and officers and directors — requires either an exemption or SEC approval. This means principal trading (adviser selling securities from its own inventory to the fund) is restricted unless covered by an exemptive rule. The annual board approval process for advisory contracts is not a formality — independent directors must evaluate seven factors articulated by the Supreme Court in Jones v. Harris Associates (2010): (1) whether fees are comparable to what the adviser charges independent clients managing similar assets; (2) economies of scale; (3) adviser profitability; (4) fall-out benefits; (5) quality of services; (6) the nature and quality of any additional services; and (7) the independence and conscientiousness of the directors. If you're launching an ETF, Rule 6c-11 (adopted 2019) allows most ETFs to operate without seeking individual SEC exemptive orders — a significant simplification — provided you meet specific conditions on transparency, custom baskets, and anti-manipulation. Crypto ETFs still require specific SEC approval.

If you serve as an independent director on a fund board: Your most important annual obligation is the advisory contract renewal under § 80a-15 — and the Jones v. Harris Associates Gartenberg factors framework is the analytical structure you must document in your deliberations. The most legally sensitive factor is the comparison of fees to "like services" charged to unaffiliated clients — if the adviser charges a hedge fund or institutional account 30 basis points to manage similar assets but charges the mutual fund 90 basis points, that comparison is directly relevant and must be addressed. Retain independent legal counsel for the independent directors separately from fund counsel — the SEC has signaled this is a governance best practice. The excessive fee litigation under § 80a-35 targets independent director complacency: cases have resulted from boards approving fee levels without meaningful comparison to the adviser's non-fund clients. Document your deliberations thoroughly; the record of the board's fee approval process is the primary defense in § 36(b) excessive fee litigation.

If you're saving for retirement through a 401(k) or IRA: Almost every mutual fund and ETF in your retirement account is an Investment Company Act-registered vehicle — so these protections apply to your savings. The most actionable implication is fee awareness: the difference between a 0.03% index fund and a 1.2% actively managed fund is not just the expense ratio — it's the compounding drag on wealth over decades. A simple example: $10,000 grows to approximately $76,000 over 30 years at 7% gross return with a 0.03% fee; the same $10,000 grows to only about $51,000 at a 1.2% fee — the fee difference costs $25,000. Your 401(k) plan administrator is required to disclose expense ratios in the plan's fee disclosure documents (annually, under ERISA). If your plan only offers expensive actively managed funds, your employer's plan committee can be challenged for failing to consider lower-cost alternatives — this is the basis for numerous 401(k) excessive fee lawsuits under ERISA § 404. Review your plan's fund lineup annually and move assets into the lowest-cost options that match your investment strategy.

Fund insiders — portfolio managers, officers, and directors — are subject to insider trading law and must adopt codes of ethics governing personal securities transactions.

State Variations

The Investment Company Act is exclusively federal. The National Securities Markets Improvement Act (NSMIA) of 1996 broadly preempts state regulation of registered investment companies, ensuring a uniform national regulatory framework.

Implementing Regulations

• 17 CFR Part 270 — Rules and Regulations, Investment Company Act of 1940 (179 sections — flat collection of exemptive rules, operational standards, and reporting requirements that collectively define how registered funds operate; no formal subparts, organized by ICA section number; key rules include):
  • Rule 12b-1 (§ 270.12b-1) — the most consequential fund cost rule: allows open-end management companies (mutual funds) to use fund assets to pay for distribution expenses — including sales commissions to broker-dealers, advertising, and shareholder servicing — subject to a written plan adopted by the board, including independent directors; 12b-1 fees must be reasonable (typically 0.25% for service-only or up to 1% for distribution); the SEC has periodically proposed reforms to the rule, arguing that 12b-1 fees are often non-transparent to shareholders
  • Fund-of-funds rules (§§ 270.12d1-1 through 270.12d1-4): rules governing when a registered fund may invest in shares of another registered fund; § 270.12d1-1 permits investments in money market funds without an exemptive order; § 270.12d1-4 (adopted 2020) permits most fund-of-funds arrangements that meet diversification, investor protection, and conflicts criteria without the prior requirement of an individual SEC exemptive order — a major deregulatory change affecting ETF-of-ETF and fund-of-funds structures
  • ETF Rule (Rule 6c-11, § 270.6c-11) — adopted September 2019, allows most exchange-traded funds to operate without individual exemptive orders from the SEC; ETFs qualifying under Rule 6c-11 must offer custom creation/redemption baskets, disclose portfolio holdings daily, and meet redemption arbitrage requirements; actively managed ETFs meeting the rule's conditions can operate without the SEC relief previously required on a fund-by-fund basis; the rule created a standardized regulatory framework in lieu of the prior letter-by-letter approach
  • Custody rules (§§ 270.17f-1 through 270.17f-7): registered investment companies must maintain their assets with a qualified custodian (bank, member of a national securities exchange, or futures commission merchant); § 270.17f-2 requires internal controls and periodic verification of assets in custody; § 270.17f-5 governs custody of fund assets held outside the United States (through foreign custodians and subcustodians); § 270.17f-7 addresses custody through securities depositories
  • Affiliated transaction exemptions (§§ 270.17a-7, 270.17d-3): § 270.17a-7 exempts certain purchase and sale transactions between affiliated funds — allowing funds with a common adviser to cross-trade portfolio securities at independent current market price without brokerage commission, subject to board oversight; § 270.17d-3 exempts joint distribution payment arrangements (12b-1 plans) from the broader affiliated-transaction prohibition of ICA § 17(d)
  • Money market fund rules (§§ 270.2a-7): Rule 2a-7 is the principal regulatory framework for money market funds — imposing maturity limits (weighted average maturity ≤60 days; weighted average life ≤120 days), credit quality requirements (Tier 1 instruments only), diversification limits, liquidity minimums (daily liquid assets ≥10%, weekly ≥30%), and either a stable $1.00 NAV (government and retail money market funds) or a floating NAV (institutional prime and institutional municipal funds); post-2008 and post-2020 reforms added redemption gates and liquidity fees (though 2023 amendments replaced gates/fees with swing pricing for institutional funds)
• 17 CFR Part 239 — Securities Act forms (Form N-5 for small business investment companies, Form 24F-2 annual filing)
• 17 CFR Part 232 — EDGAR system (investment company type and series identification)

Pending Legislation

• S 1987 (Sen. Cassidy, R-LA) — Let financial guaranty insurers count unearned premium for PFIC tests. Status: Introduced.
• HR 2567 (Rep. Steil, D-WI) — Special PFIC rules for financial guaranty insurers. Status: Introduced.

Recent Developments

The SEC — whose broader securities regulation framework encompasses this Act — has modernized the Act's framework to accommodate ETFs (through Rule 6c-11, adopted 2019), allowing most ETFs to operate without individual exemptive orders. Post-Dodd-Frank reforms strengthened fund oversight. Cryptocurrency and digital asset funds have tested the Act's boundaries, with the SEC approving spot Bitcoin and Ethereum ETFs. Fee competition has intensified, with index fund expense ratios approaching zero, while "excessive fee" litigation under § 80a-35 continues to be actively litigated.

• Spot Bitcoin and Ethereum ETF approvals (2024-2025): The SEC approved spot Bitcoin ETFs in January 2024 and spot Ethereum ETFs in May 2024 — landmark actions ending a decade of rejections under the Biden SEC. The approvals applied the Investment Company Act's registration and disclosure framework to crypto funds. BlackRock's iShares Bitcoin Trust (IBIT) attracted over $50 billion in AUM within 12 months — the fastest ETF launch in history. The Trump SEC under Chair Atkins has signaled additional crypto ETF approvals (Solana, XRP ETFs in review).
• SEC "Names Rule" and ESG fund disclosure (2024): The SEC finalized amendments to the Investment Company Act "Names Rule" (adopted September 2023, compliance dates 2025-2026) — requiring funds with ESG, sustainability, or other thematic terms in their names to invest at least 80% of assets consistent with the fund's name. The rule targets "greenwashing" — funds that market as sustainable but hold conventional assets. Some ESG funds have renamed themselves or restructured holdings to comply; others have faced enforcement inquiries. The Trump SEC has not rescinded the Names Rule but has signaled reduced ESG enforcement priority.
• Excessive fee litigation: Jones v. Harris Associates framework: Investment Company Act § 36(b) requires that fund management fees not be "excessive" — the Supreme Court's 2010 Jones v. Harris Associates decision established the "Gartenberg factors" framework, including comparisons to fees charged to unaffiliated clients. "Best execution" lawsuits against fund advisers charging significantly higher fees than comparable institutional clients continue. Several large mutual fund companies (Vanguard's competitors) face ongoing § 36(b) litigation; lower-cost index funds at Vanguard and Fidelity's Fidelity ZERO funds have created market pressure that reduces the "excessive fee" risk for index products.
• ETF market structure and 1940 Act evolution: The ETF market has grown to $11+ trillion in U.S. assets — larger than traditional mutual funds by some measures. The 1940 Act framework, designed for 1940s-era mutual funds, has been modernized incrementally. Semi-transparent ETFs (approved 2019-2020) allow active managers to disclose holdings less frequently. Non-transparent actively managed ETFs remain an evolving category. The SEC's 2023 equity market structure reforms (also affecting ETF trading) and 2024 T+1 settlement shortening (affecting ETF arbitrage mechanisms) have required Fund industry adaptation.