The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets increasing by $1.2 billion to a record $7.655 trillion after jumping by $86.8 billion the previous week. Assets have risen in 10 of the last 12 weeks and 18 of the past 21 weeks. MMF assets are up by $884 billion, or 13.1%, over the past 52 weeks (through 12/10/25), with Institutional MMFs up $527 billion, or 12.9% and Retail MMFs up $357 billion, or 13.3%. Year-to-date, MMF assets are up by $805 billion, or 11.7%, with Institutional MMFs up $490 billion, or 11.9% and Retail MMFs up $314 billion, or 11.5%. ICI's weekly release says, "Total money market fund assets increased by $1.19 billion to $7.66 trillion for the week ended Wednesday, December 10.... Among taxable money market funds, government funds increased by $862 million and prime funds increased by $2.41 billion. Tax-exempt money market funds decreased by $2.08 billion.” ICI's stats show Institutional MMFs increasing $3.2 billion and Retail MMFs decreasing $2.0 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.290 trillion (82.2% of all money funds), while Total Prime MMFs were $1.220 trillion (15.9%). Tax Exempt MMFs totaled $144.7 billion (1.9%). It explains, "Assets of retail money market funds decreased by $2.00 billion to $3.05 trillion. Among retail funds, government money market fund assets decreased by $2.01 billion to $1.92 trillion, prime money market fund assets increased by $1.34 billion to $996.66 billion, and tax-exempt fund assets decreased by $1.33 billion to $132.57 billion." Retail assets account for 39.8% of the total, and Government Retail assets make up 63.0% of all Retail MMFs. They add, "Assets of institutional money market funds increased by $3.19 billion to $4.61 trillion. Among institutional funds, government money market fund assets increased by $2.88 billion to $4.37 trillion, prime money market fund assets increased by $1.06 billion to $223.54 billion, and tax-exempt fund assets decreased by $750 million to $12.14 billion." Institutional assets accounted for 60.2% of all MMF assets, with Government Institutional assets making up 94.9% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $64.1 billion to $8.047 trillion month-to-date in December (as of 12/10), this past week they also hit a record high of $8.053 trillion on 12/9. Assets increased by $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 in May. MMFs fell by $24.4 billion in April, but rose $2.8 trillion in March, $94.2 billion in February and $52.8 billion in January. They jumped $110.9 billion last December. 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.