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DiscontinuedMoney market and bank credit statisticsLast checked 13 November 2026

Money market mutual fund assets report (FR 2051a)

A regulatory return listed by the Board of Governors of the Federal Reserve System (Federal Reserve Board), United States.

Collected the net value of total shares outstanding of money market mutual funds, used to construct the M2 monetary aggregate and analyse money market conditions. Source

Official title: Money Market Mutual Fund Assets Report

The facts

Who files
While in force, filed by money market mutual funds; since April 2010 the data comes from the Investment Company Institute's own survey, not a Board filing. Source
How often
Weekly, as of close of business on Wednesday (while it was a Board collection). Source
Deadline
Not stated on the Board's report page or the April 2007 form. Source
Format
Other. Paper form; no electronic filing channel stated. Source
How it is filed
Filing routes recorded for the Federal Reserve Board: Reporting Central; Structure Central. See how firms file with the Federal Reserve Board.
Status
DiscontinuedDiscontinued by the Board in April 2010. The Investment Company Institute (ICI) continued its own weekly survey of money market mutual funds (MMMFs) and has shared the data with the Federal Reserve since. Source
Legal basis
Group
Money market and bank credit statistics

Templates (0)

The library lists no templates for this return.

A single one-item form (total MMMF shares outstanding). Source

Validation rules

No published validation rules were found for this return. No published edit checks; discontinued as a Board collection since 2010. Source

Public data

Published only added up across firms. MMMF data are published in the Board's weekly H.6 Money Stock and Debt Measures release (retail and institutional MMMF balances, and IRA/Keogh balances at MMMFs, as separate H.6 items). Source

Where it is published

  • H.6 Money Stock Measures

    Added up across firms · HTML statistical release, with series also downloadable as structured data files through the Board's Data Download Program (https://www.federalreserve.gov/datadownload).

    The Board's weekly statistical release of the monetary aggregates (M1, M2), built in part from the FR 2900 family and (historically) the FR 2051a. Published weekly; series are also downloadable in bulk through the Board's Data Download Program. Source

Official documents (2)

The Federal Reserve Board's own files, with the size and SHA-256 fingerprint of each as downloaded on 13 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's own text, and the way Line4 has collected and arranged these records, are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The facts themselves belong to no one. The regulators' document titles, template names, quoted terms and documents belong to them and are not covered by this licence: see Federal Reserve Board's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text. Not affiliated with or endorsed by any regulator.

Source: Board of Governors of the Federal Reserve System, https://www.federalreserve.gov. Documents are linked on the regulator's own site, not hosted here. The plain-English summaries are Line4's own; the Board does not endorse this library.

Last checked 13 November 2026.