The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets surging by $70.8 billion to a record $7.804 trillion, after increasing by $59.9 billion the previous week. Assets have risen in 14 of the last 16 weeks and 22 of the past 25 weeks. MMF assets are up by $888 billion, or 12.8%, over the past 52 weeks (through 1/7/26), with Institutional MMFs up $545 billion, or 13.1% and Retail MMFs up $342 billion, or 12.4%. Year-to-date, MMF assets are also up by $954 billion, or 13.9%, with Institutional MMFs up $589 billion, or 14.3% and Retail MMFs up $365 billion, or 13.3%. ICI's weekly release says, "Total money market fund assets increased by $70.80 billion to $7.80 trillion for the eight-day period ended Wednesday, January 7, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $53.70 billion and prime funds increased by $13.78 billion. Tax-exempt money market funds increased by $3.32 billion." ICI's stats show Institutional MMFs increasing $48.3 billion and Retail MMFs increasing $22.5 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.418 trillion (82.2% of all money funds), while Total Prime MMFs were $1.233 trillion (15.8%). Tax Exempt MMFs totaled $153.6 billion (2.0%). It explains, "Assets of retail money market funds increased by $22.46 billion to $3.10 trillion. Among retail funds, government money market fund assets increased by $14.72 billion to $1.96 trillion, prime money market fund assets increased by $6.06 billion to $1.00 trillion, and tax-exempt fund assets increased by $1.69 billion to $139.50 billion." Retail assets account for 39.7% of the total, and Government Retail assets make up 63.2% of all Retail MMFs. They add, "Assets of institutional money market funds increased by $48.33 billion to $4.70 trillion. Among institutional funds, government money market fund assets increased by $38.98 billion to $4.46 trillion, prime money market fund assets increased by $7.72 billion to $229.79 billion, and tax-exempt fund assets increased by $1.63 billion to $14.06 billion." Institutional assets accounted for 60.3% of all MMF assets, with Government Institutional assets making up 94.8% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $53.3 billion to $8.162 trillion month-to-date in December (as of 1/7); they hit a record high of $8.165 trillion on 1/6. Assets increased by $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 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 last January. 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.