Wednesday’s interest rate cut to 1% may punish investors in money market mutual funds, whose average yields are expected to plummet to 44 basis points, the Los Angeles Times reports. Just before the cut, the average yield was 64 basis points.

In order to keep afloat, many firms will have to waive management fees, said Peter Crane, managing editor of iMoneynet’s Money Fund Report. There are 565 money market funds, with $309 billion or 15% of industry assets, which before the rate cut already were yielding 50 basis points or less, Crane noted. These funds are definitely going to have to waive their fees, he said. However, no money market fund manager has yet to leave the business, he added.

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