Breaking The Buck

decline in the normally constant $1 net asset value (NAV) of a money market fund. This could happen if the fund suffered severe losses or if investment income fell below operating expenses.

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When the net asset value (NAV) of a money market fund falls below $1. Breaking the buck can happen when the money market fund's investment income does not cover operating expenses or investment losses. This normally occurs when interest rates drop to very low levels, or the fund has used leverage to create capital risk in otherwise risk-free instruments.

Investopedia Says:
The NAV of a money market fund normally stays constant at $1 because investment products usually do not produce capital gains or losses. As such, the principal in a money market fund usually remains constant, making risk exposure non-existent compared to stocks, bonds and non-money market mutual funds.

The first case of a money market fund breaking the buck occurred in 1994, when Community Bankers U.S. Government Money Market Fund was liquidated at 94 cents because of large losses in derivatives.

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