Money market mutual fund assets rose by $14.14 billion to $3.575 trillion for the week ending Aug. 13, according to the Investment Company Institute.

Retail money market mutual fund assets fell by $3.61 billion to $1.240 trillion.

Taxable money market fund assets in the retail category fell by $2.65 billion to $934.08 billion, while assets of tax-exempt funds fell by $962 million to $305.95 billion.

Institutional money market fund assets rose by $17.75 billion to $2.335 trillion, taxable money market fund assets rose by $16.83 billion to $2.124 trillion and tax-exempt fund assets rose by $919 million to $210.24 billion.

The seven-day average yield fell from 1.87% to 1.84% during the week ending Aug. 12, and the 30-day average yield fell from 1.86% to 1.85%, according to iMoneyNet Inc.’s Money Fund Report.

The average maturity of money fund portfolios was up from 44 days to 45 days.

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