The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets increasing $5.2 billion to a record $7.953 trillion, after jumping $47.7 billion the previous week. MMF assets are up by $881 billion, or 12.5%, over the past 52 weeks (through 7/8/26), with Institutional MMFs up $700 billion, or 16.8% and Retail MMFs up $180 billion, or 6.2%. Year-to-date in 2026, MMF assets are up by $220 billion, or 2.8%, with Institutional MMFs up $206 billion, or 4.4% and Retail MMFs up $14 billion, or 0.5%. ICI's weekly release says, "Total money market fund assets increased by $5.23 billion to $7.95 trillion for the week ended Wednesday, July 8, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $7.76 billion and prime funds increased by $112 million. Tax-exempt money market funds decreased by $2.64 billion.” ICI's stats show Institutional MMFs increasing $0.8 billion and Retail MMFs increasing $4.4 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.564 trillion (82.5% of all money funds), while Total Prime MMFs were $1.241 trillion (15.6%). Tax Exempt MMFs totaled $148.2 billion (1.9%). It explains, "Assets of retail money market funds increased by $4.41 billion to $3.09 trillion. Among retail funds, government money market fund assets increased by $3.13 billion to $1.97 trillion, prime money market fund assets increased by $2.70 billion to $989.04 billion, and tax-exempt fund assets decreased by $1.42 billion to $135.46 billion." Retail assets account for 38.9% 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 $827 million to $4.86 trillion. Among institutional funds, government money market fund assets increased by $4.63 billion to $4.60 trillion, prime money market fund assets decreased by $2.59 billion to $252.27 billion, and tax-exempt fund assets decreased by $1.22 billion to $12.77 billion." Institutional assets accounted for 61.1% 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 $39.3 billion to $8.389 trillion month-to-date in July (as of 7/8), assets reached an all-time high of $8.404 trillion on July 6. Assets 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 in August. They rose $63.7 billion last July. 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.
