ICI: Assets Jump to Record $7.86 Tril.
The Investment Company Institute published its weekly "Money Market Fund Assets" report Thursday, which shows money fund assets increasing by $38.7 billion to a record high $7.856 trillion, after rising by $0.8 billion the previous week. Assets have risen in 21 of the last 26 weeks and 29 of the past 35 weeks. MMF assets are up by $854 billion, or 12.2%, over the past 52 weeks (through 3/18/26), with Institutional MMFs up $618 billion, or 14.8% and Retail MMFs up $236 billion, or 8.3%. Year-to-date in 2026, MMF assets are up by $123 billion, or 1.6%, with Institutional MMFs up $97 billion, or 2.1% and Retail MMFs up $26 billion, or 0.8%. ICI's weekly release says, "Total money market fund assets increased by $38.68 billion to $7.86 trillion for the week ended Wednesday, March 18, the Investment Company Institute reported.... Among taxable money market funds, government funds increased by $40.55 billion and prime funds decreased by $3.40 billion. Tax-exempt money market funds increased by $1.52 billion." ICI's stats show Institutional MMFs increasing $27.8 billion and Retail MMFs increasing $10.9 billion in the latest week. Total Government MMF assets, including Treasury funds, were $6.469 trillion (82.3% of all money funds), while Total Prime MMFs were $1.244 trillion (15.8%). Tax Exempt MMFs totaled $143.1 billion (1.8%). It explains, "Assets of retail money market funds increased by $10.91 billion to $3.10 trillion. Among retail funds, government money market fund assets increased by $7.82 billion to $1.97 trillion, prime money market fund assets increased by $1.90 billion to $1.01 trillion, and tax-exempt fund assets increased by $1.19 billion to $129.75 billion." Retail assets account for 39.5% of the total, and Government Retail assets make up 63.4% of all Retail MMFs. They add, "Assets of institutional money market funds increased by $27.77 billion to $4.75 trillion. Among institutional funds, government money market fund assets increased by $32.74 billion to $4.50 trillion, prime money market fund assets decreased by $5.29 billion to $237.21 billion, and tax-exempt fund assets increased by $326 million to $13.39 billion." Institutional assets accounted for 60.5% of all MMF assets, with Government Institutional assets making up 94.7% of all institutional MMF totals. According to Crane Data's separate Money Fund Intelligence Daily series, money fund assets have increased by $38.4 billion to $8.280 trillion month-to-date in March (as of 3/18), assets hit a record high on March 18 of $8.280 trillion. (Our asset series previous record high, $8.276 trillion, was set on 3/17/26.) Assets increased by $99.5 billion in February, $32.9 billion in January, $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 and $94.2 billion last February. 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.
