The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows assets dipping after jumping the previous week. The release says, "Total money market fund assets decreased by $4.57 billion to $4.55 trillion for the week ended Wednesday, November 3, the Investment Company Institute reported today. Among taxable money market funds, government funds decreased by $1.70 billion and prime funds decreased by $4.02 billion. Tax-exempt money market funds increased by $1.16 billion." Money fund assets are up by $257 billion, or 6.0%, year-to-date in 2021. Inst MMFs are up $348 billion (12.6%), while Retail MMFs are down $91 billion (-6.0%). ICI's stats show Institutional MMFs decreasing $4.8 billion and Retail MMFs increasing $0.3 billion in the latest week. Total Government MMF assets, including Treasury funds, were $4.011 trillion (88.1% of all money funds), while Total Prime MMFs were $454.6 billion (10.0%). Tax Exempt MMFs totaled $88.8 billion (1.9%). Over the past 52 weeks, money fund assets have increased by $219 billion, or 5.1%, with Retail MMFs falling by $107 billion (-6.9%) and Inst MMFs rising by $326 billion (11.7%). (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.) ICI explains, "Assets of retail money market funds increased by $256 million to $1.43 trillion. Among retail funds, government money market fund assets increased by $1.34 billion to $1.15 trillion, prime money market fund assets decreased by $1.22 billion to $209.14 billion, and tax-exempt fund assets increased by $134 million to $77.46 billion." Retail assets account for just under a third of total assets, or 31.5%, and Government Retail assets make up 80.0% of all Retail MMFs. They add, "Assets of institutional money market funds decreased by $4.83 billion to $3.12 trillion. Among institutional funds, government money market fund assets decreased by $3.05 billion to $2.86 trillion, prime money market fund assets decreased by $2.80 billion to $245.44 billion, and tax-exempt fund assets increased by $1.02 billion to $11.31 billion." Institutional assets accounted for 68.5% of all MMF assets, with Government Institutional assets making up 91.8% of all Institutional MMF totals.