ICI's latest weekly "Money Market Fund Assets" report shows money fund assets jumping in the latest week, just the 4th increase in the past 21 weeks. Assets have fallen $469 billion since May 20, when they were at a record $4.789 trillion. ICI says, "Total money market fund assets increased by $31.40 billion to $4.32 trillion for the six-day period ending Tuesday, December 22.... Among taxable money market funds, government funds increased by $35.33 billion and prime funds decreased by $1.92 billion. Tax-exempt money market funds decreased by $2.01 billion." ICI's stats show Institutional MMFs increasing $29.1 billion and Retail MMFs increasing $2.3 billion. Total Government MMF assets, including Treasury funds, were $3.668 trillion (84.9% of all money funds), while Total Prime MMFs were $545.4 billion (12.6%). Tax Exempt MMFs totaled $106.5 billion (2.5%). (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 our asset series.) ICI shows money fund assets up a still massive $688 billion, or 19.0%, year-to-date in 2020, with Inst MMFs up $534 billion (23.6%) and Retail MMFs up $155 billion (11.3%). Over the past 52 weeks, ICI's money fund asset series has increased by $716 billion, or 20.4%, with Retail MMFs rising by $161 billion (12.0%) and Inst MMFs rising by $555 billion (25.5%). (Crane Data's separate and broader Money Fund Intelligence Daily data series shows total MF assets are down $8.3 billion in December, as of 12/22, to $4.710 trillion.) They explain, "Assets of retail money market funds increased by $2.28 billion to $1.52 trillion. Among retail funds, government money market fund assets increased by $5.41 billion to $1.15 trillion, prime money market fund assets decreased by $2.33 billion to $280.20 billion, and tax-exempt fund assets decreased by $800 million to $95.43 billion. Retail assets account for just over a third of total assets, or 35.3%, and Government Retail assets make up 75.4% of all Retail MMFs. ICI adds, "Assets of institutional money market funds increased by $29.12 billion to $2.80 trillion. Among institutional funds, government money market fund assets increased by $29.92 billion to $2.52 trillion, prime money market fund assets increased by $415 million to $265.18 billion, and tax-exempt fund assets decreased by $1.21 billion to $11.03 billion. Institutional assets, which broke below the $3.0 trillion level for the first time since April 22 at the end of August, accounted for 64.7% of all MMF assets, with Government Institutional assets making up 90.1% of all Institutional MMF totals.