ICI: MMF Assets Up Again in August
After almost breaking the $8.0 trillion barrier six weeks ago, the Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets rising $18.3 billion to $7.928 trillion. Assets rose $55.4 billion the previous week and decreased $6.8 billion the week before this. MMF assets are up by $742 billion, or 10.4%, over the past 52 weeks (through 8/12/26), with Institutional MMFs up $579 billion, or 13.7% and Retail MMFs up $163 billion, or 5.5%. Year-to-date in 2026, MMF assets are up by $194 billion, or 2.5%, with Institutional MMFs up $168 billion, or 3.6% and Retail MMFs up $26 billion, or 0.8%. ICI's weekly release says, "Total money market fund assets increased by $18.26 billion to $7.93 trillion for the week ended Wednesday, August 12, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $20.69 billion and prime funds increased by $1.79 billion. Tax-exempt money market funds decreased by $4.22 billion.” ICI's stats show Institutional MMFs increasing $13.9 billion and Retail MMFs increasing $4.4 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.540 trillion (82.5% of all money funds), while Total Prime MMFs were $1.240 trillion (15.6%). Tax Exempt MMFs totaled $147.9 billion (1.9%). It explains, "Assets of retail money market funds increased by $4.40 billion to $3.10 trillion. Among retail funds, government money market fund assets increased by $3.17 billion to $1.98 trillion, prime money market fund assets increased by $3.54 billion to $992.35 billion, and tax-exempt fund assets decreased by $2.31 billion to $135.80 billion." Retail assets account for 39.1% 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 $13.86 billion to $4.82 trillion. Among institutional funds, government money market fund assets increased by $17.52 billion to $4.56 trillion, prime money market fund assets decreased by $1.75 billion to $247.63 billion, and tax-exempt fund assets decreased by $1.91 billion to $12.10 billion." Institutional assets accounted for 60.9% of all MMF assets, with Government Institutional assets making up 94.6% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $72.5 billion to $8.361 trillion month-to-date in August (as of 8/12), assets reached an all-time high of $8.404 trillion on July 6. Assets decreased $61.4 billion in July, increased $58.6 billion in June, $208.6 billion in May, 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 last August. 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.
