ICI: MMF Assets Rebound in August
After almost breaking the $8.0 trillion barrier five weeks prior, the Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets rising $55.4 billion to $7.909 trillion. Assets fell $6.8 billion the previous week and decreased $22.6 billion the week before this. But MMF assets are still up by $757 billion, or 10.6%, over the past 52 weeks (through 8/5/26), with Institutional MMFs up $589 billion, or 13.9% and Retail MMFs up $168 billion, or 5.7%. Year-to-date in 2026, MMF assets are up by $176 billion, or 2.3%, with Institutional MMFs up $155 billion, or 3.3% and Retail MMFs up $21 billion, or 0.7%. ICI's weekly release says, "Total money market fund assets increased by $55.39 billion to $7.91 trillion for the week ended Wednesday, August 5, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $46.36 billion and prime funds increased by $7.06 billion. Tax-exempt money market funds increased by $1.97 billion.” ICI's stats show Institutional MMFs increasing $34.1 billion and Retail MMFs increasing $21.3 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.519 trillion (82.4% of all money funds), while Total Prime MMFs were $1.238 trillion (15.7%). Tax Exempt MMFs totaled $152.1 billion (1.9%). It explains, "Assets of retail money market funds increased by $21.26 billion to $3.10 trillion. Among retail funds, government money market fund assets increased by $16.01 billion to $1.97 trillion, prime money market fund assets increased by $4.54 billion to $988.81 billion, and tax-exempt fund assets increased by $708 million to $138.11 billion." Retail assets account for 39.2% 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 $34.14 billion to $4.81 trillion. Among institutional funds, government money market fund assets increased by $30.35 billion to $4.55 trillion, prime money market fund assets increased by $2.53 billion to $249.38 billion, and tax-exempt fund assets increased by $1.27 billion to $14.01 billion." Institutional assets accounted for 60.8% 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 $48.9 billion to $8.338 trillion month-to-date in August (as of 8/5), 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.
