The Reserve Fund was only the second MMMF to break the buck since the SEC adopted rules governing these funds in 1983, with the first being the Community Bankers US Government Fund in 1994. 6 Both funds had losses significant enough to cause them to break the buck and sponsors that were unable to provide non-contractual support to prevent the losses from being passed on to shareholders. However, it was the lack of sponsor support for these two funds that was more unusual than the underlying losses suffered, as credit events have impacted many more than two funds in the.