US money market fund assets slipped by $21.48 billion for the week ending June 10, 2026, bringing the total down to $7.87 trillion, according to data from the Investment Company Institute.
The decline touched every corner of the money market universe. Government funds, the largest category, shed $13.60 billion. Prime funds dropped $6.64 billion. Tax-exempt funds, the smallest slice, fell $1.23 billion.
Institutional money led the retreat
Institutional money market fund assets fell by $16.23 billion, landing at $4.78 trillion. Retail assets dipped a more modest $5.25 billion to $3.10 trillion, a ratio of roughly three to one.
At $4.78 trillion, institutional holdings still dwarf the retail side. Institutions account for roughly 61% of total money market assets.
