A situation in which the
net asset value of a
money market fund drops below $1. Generally, the NAV of a money market fund remains at $1, but it may drop below if the
returns on the fund's
investments do not cover
operating expenses. Breaking a buck occurs when
interest rates drop to an unsustainably low level or when the fund has used
leverage to make investments. Because money market funds are ordinarily
risk-free investments, breaking a buck is relatively uncommon; the first occurrence did not happen until 1994.