SEC Rule 2a-7

The July 2023 amendments — the rule's third major overhaul since the 2008 financial crisis — fundamentally restructured the framework's stress management architecture by permanently eliminating redemption gates, substantially raising liquidity minimums, and replacing the prior discretionary liquidity fee framework with a mandatory liquidity fee requirement for institutional funds experiencing significant redemption pressure, completing a process of regulatory evolution driven by the fund industry's experience across three distinct episodes of market stress: the 2008 Reserve Primary Fund breaking the buck, the March 2020 COVID-19 liquidity shock, and the March 2023 banking sector stress.

Overview and Regulatory Purpose

Money market funds occupy a unique and structurally critical position in the American financial system that distinguishes them from all other categories of registered investment company. Unlike equity mutual funds or bond funds whose share prices fluctuate with the market value of their portfolios, money market funds are specifically designed to maintain a stable $1.00 net asset value per share — a pricing stability that allows them to function as practical equivalents of bank deposits for institutional and retail investors who require a safe, liquid, and yield-generating repository for short-term cash holdings. 

This functional equivalence to bank deposits gives money market funds their enormous commercial appeal: they offer higher yields than bank money market deposit accounts because they channel investor capital into short-term debt markets rather than holding reserves, while presenting an investor experience — stable value, immediate liquidity, daily accrual of yield — that closely mirrors a deposit account.

The stable $1.00 NAV, however, is an accounting convention rather than a guaranteed investment outcome. A money market fund's portfolio of short-term debt instruments fluctuates in market value continuously as interest rates change and as the credit quality of portfolio holdings evolves. 

A fund that maintains its NAV at $1.00 using amortised cost valuation is not guaranteeing that the market value of its assets equals $1.00 per share — it is using an accounting method that smooths out the small, transient fluctuations in market value that occur under normal market conditions and that would, if reflected immediately in the fund's NAV, create daily price changes too small to be commercially meaningful but large enough to make the fund's pricing mechanics indistinguishable from those of a fluctuating bond fund.

The systemic risk associated with this structure is the possibility of breaking the buck — the circumstance in which a money market fund's market value per share falls below $0.995 and cannot be rounded up to $1.00 under the penny rounding convention, requiring the fund to liquidate or impose losses on shareholders. 

The Reserve Primary Fund's 2008 breaking of the buck — triggered by losses on Lehman Brothers commercial paper — demonstrated that a single breaking-the-buck event at a major fund could trigger an industry-wide run as investors across all money market funds rushed to redeem before their own funds might break the buck, creating a systemic liquidity crisis in the short-term funding markets that required extraordinary intervention by the U.S. Treasury and Federal Reserve to stabilise. 

Rule 2a-7's regulatory framework — and its successive post-crisis amendments — is specifically designed to prevent this scenario through portfolio quality constraints that reduce the probability of portfolio losses, liquidity requirements that ensure funds can meet redemption demands even under stress, and pricing and stress management mechanisms that reduce the systemic incentives for preemptive runs.

Statutory Authority and Rulemaking History

Rule 2a-7 derives its statutory authority from Section 2(a)(41) of the Investment Company Act of 1940, which defines value for purposes of computing net asset value, and Section 22(c) of the Act, which authorises the Commission to prescribe the methods by which registered investment companies may value their securities for purposes of computing net asset value. 

The Commission's authority to permit money market funds to use amortised cost valuation — rather than mark-to-market valuation — rather than treating these funds as violating the Act's general fair value requirements is the foundational statutory basis for Rule 2a-7's entire regulatory framework. Without Section 22(c)'s valuation rulemaking authority, money market funds could not maintain a stable $1.00 NAV and their distinctive commercial characteristics would be impossible to replicate.

Rule 2a-7 was originally adopted November 10, 1983 — Investment Company Act Release No. IC-13380 — establishing the first comprehensive regulatory framework for money market fund portfolio composition and pricing mechanics. 

The rule underwent its first major post-crisis overhaul in February 2010 — Investment Company Act Release No. IC-29132 — following the Reserve Primary Fund's 2008 breaking of the buck, which prompted the Commission to introduce minimum daily and weekly liquid asset requirements, tighten credit quality and maturity standards, and improve transparency through expanded website and Form N-MFP reporting requirements. 

The second major overhaul in July 2014 — Investment Company Act Release No. IC-31166 — introduced floating NAV requirements for institutional prime and institutional tax-exempt money market funds, mandatory redemption gates and liquidity fees when funds' weekly liquid assets fell below specified thresholds, and enhanced stress testing and reporting requirements. 

The July 12, 2023 amendments — Investment Company Act Release No. IC-34980, published at 88 FR 51404 August 3, 2023 — constituted the third major overhaul, substantially revising the rule's stress management architecture in response to the March 2020 COVID-19 liquidity crisis, which demonstrated that the 2014 amendments' redemption gate and liquidity fee provisions had not functioned as intended and had instead created first-mover advantages that accelerated rather than dampened redemption pressure.

Key Provisions and Operative Requirements

Rule 2a-7's regulatory framework operates across four interconnected categories of requirement: eligible portfolio investments, portfolio diversification, portfolio maturity and liquidity, and pricing and stress management.

Eligible Portfolio Investments. Rule 2a-7(d) prescribes the credit quality standards that money market fund portfolio investments must satisfy. 

The rule requires that a money market fund invest only in eligible securities — defined as securities that at the time of purchase present minimal credit risks as determined by the fund's board of directors or its delegate. All portfolio investments must be short-term obligations of high credit quality. 

The rule divides eligible securities into two credit tiers: first-tier securities, which are rated in the highest short-term rating category by a nationally recognised statistical rating organisation or are determined to be of comparable quality by the fund's board, and second-tier securities, which are rated in the highest two short-term rating categories. 

A money market fund may invest in both tiers, subject to the specific concentration limits that prevent over-concentration in lower-quality second-tier securities and in any single issuer's obligations.

Portfolio Diversification. Rule 2a-7 prescribes issuer concentration limits to prevent money market funds from concentrating excessive credit risk in any single borrower. As a general rule, a money market fund may not invest more than 5% of its total assets in the securities of any single issuer — the diversification limit that reduces the portfolio's exposure to any individual issuer's credit risk to a level that can be absorbed without threatening the fund's stable NAV. 

The 5% limit does not apply to U.S. government securities or to securities issued or guaranteed by the U.S. government, its agencies, or its instrumentalities, reflecting the absence of credit risk in those obligations. Second-tier securities are subject to a more restrictive 3% aggregate concentration limit for all second-tier issuers combined, with a further 0.5% single-issuer limit within the second-tier category, ensuring that the portfolio's aggregate exposure to lower-quality credits is tightly constrained.

Portfolio Maturity and Liquidity. Rule 2a-7 establishes three categories of portfolio maturity and liquidity constraints that together define the permissible risk profile of a money market fund portfolio. The weighted average maturity requirement limits the portfolio's interest rate sensitivity: a money market fund may not maintain a weighted average maturity — the average maturity of portfolio holdings weighted by their percentage of total assets — of more than 60 days. 

The weighted average life requirement limits the portfolio's exposure to floating-rate securities whose contractual final maturities may be long despite their frequent interest rate resets: a money market fund may not maintain a weighted average life — computed using each security's final stated maturity rather than its next reset date — of more than 120 days. 

The maximum maturity limit constrains individual security maturities: no security with a remaining maturity of more than 397 days may be included in a money market fund's portfolio, subject to certain adjustments applicable to variable-rate instruments and government securities.

The liquidity minimums — substantially increased by the July 2023 amendments — require that money market funds maintain specified percentages of their total assets in daily liquid assets and weekly liquid assets. Daily liquid assets are defined as cash, direct obligations of the U.S. government, and securities that will mature or are subject to a demand feature exercisable on the current business day. 

Following the April 2024 compliance date, every money market fund must maintain at least 25% of its total assets in daily liquid assets at all times — increased from the prior 10% minimum. Weekly liquid assets are defined as cash, direct obligations of the U.S. government, and securities that will mature or are subject to a demand feature exercisable within five business days. 

Following the April 2024 compliance date, every money market fund must maintain at least 50% of its total assets in weekly liquid assets at all times — increased from the prior 30% minimum. These substantially higher liquidity minimums are designed to ensure that money market funds have a more robust buffer of immediately realisable assets to meet redemption demands under stress conditions, addressing the finding from the March 2020 COVID-19 experience that the prior minimums were insufficient to maintain market confidence during periods of elevated redemption pressure.

Pricing and Stable NAV Mechanics. Rule 2a-7 permits two categories of money market fund to use amortised cost valuation and the penny rounding convention to maintain a stable $1.00 NAV per share: government money market funds — those that invest at least 99.5% of their total assets in cash, government securities, and repurchase agreements fully collateralised by government securities — and retail money market funds — those that limit beneficial ownership to natural persons through policies and procedures reasonably designed to limit beneficial ownership exclusively to retail investors. 

All other money market funds — primarily institutional prime and institutional tax-exempt money market funds — must price their shares using mark-to-market valuation at four decimal places, producing a floating NAV that fluctuates with the market value of the portfolio rather than being rounded to a stable $1.00. The floating NAV requirement for institutional funds, retained from the 2014 amendments, reflects the Commission's determination that institutional investors — who manage large pools of cash with the sophistication to understand and tolerate small NAV fluctuations — do not require the stable $1.00 NAV accommodation that retail investors do, and that imposing a floating NAV on institutional funds eliminates the first-mover advantage that drives redemption runs in those fund categories.

Mandatory and Discretionary Liquidity Fees. The July 2023 amendments replaced the 2014 rule's discretionary liquidity fee and redemption gate framework — which had tied the availability of those tools to the fund's weekly liquid asset level, creating a feedback loop that accelerated redemptions as funds approached the liquidity threshold — with a new architecture separating liquidity fees from liquidity thresholds entirely and introducing a mandatory fee requirement for institutional funds.

Effective October 2, 2024, institutional prime and institutional tax-exempt money market funds are subject to a mandatory liquidity fee whenever the fund's daily net redemptions exceed 5% of its total net assets. 

The mandatory liquidity fee must be charged to redeeming shareholders based on the fund's best estimate of the liquidity costs — the market impact costs, spread costs, and transaction costs — associated with satisfying the redemption. 

The mandatory fee is not required where the fund's calculation determines that the fee would be less than 0.01% of the value of the shares redeemed — a de minimis threshold designed to avoid imposing fee calculation and notification burdens for fees too small to be commercially meaningful. The mandatory fee must be reported to the Commission on Form N-MFP and disclosed to shareholders through the fund's website or by press release.

Retail prime and retail tax-exempt money market funds, as well as government money market funds that have adopted a discretionary liquidity fee policy, retain discretionary authority to impose liquidity fees on redemptions when the fund's board — or its delegate — determines that a fee is in the fund's best interests, without any threshold trigger. 

The removal of the 2014 rule's tie between the weekly liquid asset minimum and the fund's ability to impose a discretionary fee was designed to eliminate the problematic feedback dynamic in which the mere approach of the weekly liquid asset threshold created anticipatory redemptions that further depleted liquidity before the fee could be imposed.

Redemption gates — the provision permitting a money market fund to temporarily suspend redemptions entirely — were permanently eliminated effective October 2, 2023, reflecting the Commission's determination that the gate mechanism had proven counterproductive in practice, creating first-mover advantages for sophisticated institutional investors who could anticipate gate imposition and redeem preemptively, thereby accelerating the liquidity deterioration that the gates were intended to halt.

Stress Testing and Reporting. Rule 2a-7 requires that a money market fund conduct periodic stress testing of its ability to maintain a stable $1.00 NAV and to maintain liquidity sufficient to meet reasonably foreseeable redemption demands. The board must establish written procedures for stress testing, specify the minimum liquidity level the fund seeks to maintain during stress periods, and receive regular reports on stress testing results. 

Enhanced reporting through Form N-MFP — submitted monthly to the Commission and publicly available through EDGAR — provides granular portfolio composition, maturity, liquidity, and pricing data that enables the Commission to monitor money market fund market-wide liquidity conditions and identify emerging vulnerabilities in the broader short-term funding markets.

Scope of Application

Rule 2a-7 applies to all registered investment companies that hold themselves out as money market funds — including government money market funds, retail money market funds, institutional prime money market funds, and institutional tax-exempt money market funds — organised as open-end management investment companies under the Investment Company Act. 

The rule creates a differentiated regulatory framework across these four categories, with the most stringent requirements applicable to institutional prime and institutional tax-exempt funds — the categories that experienced the most severe redemption pressure during the 2008 and 2020 stress episodes — including the floating NAV requirement and the mandatory liquidity fee framework. Government money market funds — which invest exclusively in government-backed instruments — receive the most permissive treatment, reflecting their lower credit risk profile and their status as the primary beneficiary of cash flows fleeing institutional prime funds during stress events.

Offshore money market funds and private liquidity funds — pooled investment vehicles structured as money market funds for regulatory purposes under CFTC or state law frameworks — are not subject to Rule 2a-7 as registered Investment Company Act funds, though their advisers' obligations under Form PF reporting were enhanced by the July 2023 amendments to provide the Commission with a more comprehensive view of the broader short-term funding market.

Relationship to Related Rules and Regulations

Rule 2a-7's portfolio liquidity requirements interact directly with Rule 22e-4's liquidity risk management programme framework — the 2016 rule requiring registered open-end funds to establish liquidity risk management programmes. Money market funds subject to Rule 2a-7's specific daily and weekly liquid asset minimums are exempt from certain provisions of Rule 22e-4's general liquidity classification and monitoring requirements, with Rule 2a-7's specific liquidity standards serving as the operative framework for money market fund liquidity management in lieu of Rule 22e-4's general provisions.

Rule 38a-1's compliance programme framework applies to money market funds as registered investment companies, requiring that each money market fund's compliance programme specifically address the fund's compliance with Rule 2a-7's portfolio quality, maturity, diversification, and liquidity requirements. 

The frequency and specificity of Rule 2a-7 compliance monitoring within the fund's Rule 38a-1 compliance programme reflects the rule's continuous operational requirements — a money market fund must satisfy Rule 2a-7's portfolio conditions at all times, not merely at periodic measurement dates, requiring real-time portfolio monitoring systems that are appropriately integrated into the fund's overall compliance infrastructure.

Rule 22c-1's forward pricing requirement — which requires that registered open-end fund shares be sold and redeemed at the next calculated NAV — applies to money market fund shares, with Rule 2a-7's stable NAV mechanics operating within the forward pricing framework through the amortised cost valuation permission that Rule 2a-7 provides for qualifying fund categories. 

The interaction between Rule 22c-1 and Rule 2a-7 is what enables government and retail money market funds to transact at a stable $1.00 NAV while remaining compliant with the Investment Company Act's general NAV requirement.

Amendment History and Regulatory Evolution

Rule 2a-7's amendment history is the most consequential regulatory evolution story in the registered investment company industry — three decades of regulatory refinement driven by successive episodes of market stress that progressively revealed the limitations of each prior regulatory framework.

The 2010 amendments — adopted in direct response to the Reserve Primary Fund's 2008 collapse — introduced minimum daily and weekly liquid asset requirements (the initial thresholds of 10% daily and 30% weekly), tightened credit quality and maturity standards, required funds to perform stress testing, and imposed enhanced transparency through Form N-MFP. 

These reforms addressed the portfolio quality and liquidity concerns revealed by the 2008 experience but did not address the structural run dynamic — the first-mover advantage that creates incentives for sophisticated investors to redeem preemptively during market stress.

The 2014 amendments addressed the run dynamic more directly by introducing the floating NAV requirement for institutional prime and institutional tax-exempt funds — removing the stable $1.00 NAV that had made those funds particularly susceptible to runs — and by adding the redemption gate and liquidity fee provisions tied to the weekly liquid asset threshold. 

Those provisions, however, proved counterproductive in practice during the March 2020 COVID-19 stress event: the mere approach of the weekly liquid asset threshold as COVID-19 disrupted short-term debt markets triggered a wave of preemptive institutional redemptions that further depleted liquidity — the opposite of the stabilising effect the gates and fees were intended to produce.

The 2023 amendments specifically addressed this 2020 experience by permanently eliminating gates, severing the connection between liquidity thresholds and discretionary fees, substantially raising the liquidity minimums, and replacing the discretionary institutional fee framework with the mandatory liquidity fee that transfers redemption costs directly to redeeming shareholders through a market-impact-based pricing mechanism rather than through an on-off gate that creates first-mover incentives.

Enforcement Context and SEC Action Patterns

Rule 2a-7 enforcement has concentrated on three primary categories. The first is portfolio compliance — cases where money market funds have held securities that do not qualify as eligible securities under Rule 2a-7's credit quality standards, or that exceed the maturity limits or concentration limits the rule prescribes. 

The Commission has brought enforcement actions against money market fund advisers for violations of portfolio quality requirements, particularly in the context of holding second-tier securities in excess of applicable limits or holding securities with apparent credit deficiencies not adequately reflected in their ratings.

The second category is pricing compliance — cases where money market funds using amortised cost valuation have maintained securities in their portfolios at amortised cost values that materially deviate from their market values without taking the corrective actions that Rule 2a-7 requires when such deviations occur. 

The third category involves Form N-MFP reporting violations — failures to accurately and timely disclose the portfolio composition, maturity, and liquidity information the rule requires to be publicly available through EDGAR, which serves as the primary transparency mechanism enabling market participants and the Commission to monitor money market fund portfolio conditions.

Examination Relevance and Key Takeaways

Rule 2a-7 is examined at the Series 7 and Series 65 levels as the foundational regulatory framework for money market funds. The distinction between the four money market fund categories — government, retail, institutional prime, and institutional tax-exempt — and the differential treatment of each category under the stable NAV, floating NAV, and mandatory liquidity fee frameworks is the primary structural examination concept. The July 2023 amendments' elimination of redemption gates, increase in liquidity minimums to 25% daily and 50% weekly, and introduction of the mandatory liquidity fee for institutional funds triggering when net redemptions exceed 5% of net assets are the most current and most frequently examined developments.

The portfolio quality conditions — eligible securities, credit quality tiers, maturity limits of 60-day WAM and 120-day WAL, and maximum individual security maturity of 397 days — are consistently examined at both the Series 7 and Series 65 levels.

The key points to retain are these. Rule 2a-7 is the comprehensive regulatory framework for money market funds — registered open-end management investment companies that seek to maintain a stable or floating NAV while investing in high-quality short-term debt instruments. Government and retail money market funds may use amortised cost valuation to maintain a stable $1.00 NAV; institutional prime and institutional tax-exempt funds must use a floating NAV. 

All funds must invest only in eligible securities meeting minimum credit quality standards, maintain weighted average maturity no greater than 60 days, weighted average life no greater than 120 days, and individual security maturities no greater than 397 days, with 5% single-issuer diversification limits. 

As of April 2024, all funds must maintain at least 25% of assets in daily liquid assets and at least 50% in weekly liquid assets. As of October 2024, institutional prime and institutional tax-exempt funds must impose mandatory liquidity fees when daily net redemptions exceed 5% of net assets, unless the fee would be less than 0.01% of shares redeemed. Redemption gates were permanently eliminated October 2, 2023. Rule 2a-7 was last substantively amended July 12, 2023 with a phased compliance timeline completed October 2, 2024.