The Investment Company Institute's latest weekly "Money Market Fund Assets" report shows money fund assets dipped after jumping last week. Money fund assets remain up slightly on a year-to-date basis. They're now up $8 billion, or 0.3%, YTD, and `they've increased by $229 billion, or 8.7%, over 52 weeks. ICI writes, "Total money market fund assets decreased by $5.21 billion to $2.85 trillion for the week ended Wednesday, July 18, the Investment Company Institute reported today. Among taxable money market funds, government funds decreased by $10.57 billion and prime funds increased by $6.64 billion. Tax-exempt money market funds decreased by $1.28 billion." Total Government MMF assets, which include Treasury funds too, stand at $2.216 trillion (77.9% of all money funds), while Total Prime MMFs stand at $492.5 billion (17.3%). Tax Exempt MMFs total $137.0 billion, or 4.8%. They explain, "Assets of retail money market funds increased by $1.33 billion to $1.04 trillion. Among retail funds, government money market fund assets decreased by $694 million to $630.87 billion, prime money market fund assets increased by $3.29 billion to $280.59 billion, and tax-exempt fund assets decreased by $1.27 billion to $128.05 billion." Retail assets account for over a third of total assets, or 36.5%, and Government Retail assets make up 60.7% of all Retail MMFs. ICI's release adds, "Assets of institutional money market funds decreased by $6.54 billion to $1.81 trillion. Among institutional funds, government money market fund assets decreased by $9.88 billion to $1.59 trillion, prime money market fund assets increased by $3.36 billion to $211.89 billion, and tax-exempt fund assets decreased by $14 million to $8.92 billion." Institutional assets account for 63.5% of all MMF assets, with Government Inst assets making up 87.8% of all Institutional MMFs.