Company Act of 1940. 14 If the current rules were in place in 2007 and 2008, prime MMMFs could still have held the distressed asset-backed commercial paper and Lehman debt securities that triggered support for many funds and the break the buck event for the Reserve Fund. Indeed, Lehman debt maintained the highest short term ratings up through the time it filed for bankruptcy. 15 And recent sponsor behavior indicates that support is still a likely event in the face of such credit events or uncertainty. Although no MMMF holdings have defaulted since 2008, two Northern Trust funds 16 disclosed the purchase.