MMF Assets Flat on Week at $7.749T
The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets flat at $7.449 trillion after they jumped a massive $122.4 billion the previous week. MMFs fell $11.0 billion the week before that, and they fell by a huge $175.8 billion 4 weeks ago, the largest weekly drop ever. Assets hit a record high $7.856 trillion 8 weeks ago. MMF assets are up by $808 billion, or 11.6%, over the past 52 weeks (through 5/13/26), with Institutional MMFs up $592 billion, or 14.5% and Retail MMFs up $216 billion, or 7.5%. Year-to-date in 2026, MMF assets are up by $16 billion, or 0.2%, with Institutional MMFs up $9 billion, or 0.2% and Retail MMFs up $7 billion, or 0.2%. ICI's weekly release says, "Total money market fund assets increased by $436 million to $7.75 trillion for the week ended Wednesday, May 13, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $3.25 billion and prime funds decreased by $4.08 billion. Tax-exempt money market funds increased by $1.27 billion." ICI's stats show Institutional MMFs increasing $0.16 billion and Retail MMFs increasing $0.28 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.373 trillion (82.2% of all money funds), while Total Prime MMFs were $1.226 trillion (15.9%). Tax Exempt MMFs totaled $150.1 billion (1.9%). It explains, "Assets of retail money market funds increased by $277 million to $3.08 trillion. Among retail funds, government money market fund assets decreased by $748 million to $1.96 trillion, prime money market fund assets decreased by $154 million to $986.96 billion, and tax-exempt fund assets increased by $1.18 billion to $136.67 billion." Retail assets account for 39.8% of the total, and Government Retail assets make up 63.6% of all Retail MMFs. They add, "Assets of institutional money market funds increased by $159 million to $4.66 trillion. Among institutional funds, government money market fund assets increased by $4.00 billion to $4.41 trillion, prime money market fund assets decreased by $3.93 billion to $238.80 billion, and tax-exempt fund assets increased by $86 million to $13.42 billion." Institutional assets accounted for 60.2% of all MMF assets, with Government Institutional assets making up 94.5% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $106.4 billion to $8.189 trillion month-to-date in May (as of 5/13), assets hit a record high on March 18 of $8.280 trillion. Assets decreased by $108.8 billion in April, $49.3 billion in March, increased $99.5 billion in February, $32.9 billion in January, $126.3 billion in December, $132.8 billion in November, $142.1 billion in October, $105.2 billion in September and $132.0 billion in August. They rose $63.7 billion in July, $6.7 billion in June and $100.9 billion last May. Note that ICI's asset totals don't include a number of funds tracked by the SEC and Crane Data, so they're almost $400 billion lower than Crane's asset series.
