Notions 27
During the GFC, some markets shut down following a major shock because of
adverse selection, with repercussions to other markets. The market for repurchase
agreements (repo)
4
was adversely impacted by the lack of condence of operators,
as described by Gorton and Metrick (2012), who noticed that “during this time
period, several classes of assets stopped entirely from being used as collateral, an
unprecedented event that is equivalent to a haircut of 100 percent”. More gener-
ally, a market shutdown creates a funding shortage for banking and non- banking
participants. For example, some investment funds may become illiquid, possibly
triggering a run ( fund run). In 2007–2008, money market investment funds la-
belled as “dynamic” heav ...