One unexpected consequence of Lehman’s collapse was the seizing up of the repurchase agreement, or repo, market -- a form of secured, short-term borrowing used by Wall Street banks and investment firms. Many of Lehman’s trading counterparts discovered the collateral they believed was backing their loans wasn’t there to grab as rules allowed. That scared investors in the rest of the market, closing off other trades and leading to fire sales of securities and further price declines.
A government default could freeze the repo market more than Lehman’s collapse because U.S. debt forms its backbone. At least $2.8 trillion of Treasuries serve as collateral for repo and reverse-repo loans, according to Fed data. In the event of a default, Treasuries might no longer be eligible as collateral for repo agreements, according to James Kochan, Wells Fargo Funds Management LLC’s chief fixed-income strategist. The cheap funding for the holdings lowers the yields demanded on the investments, and unwinding the positions could amplify losses for lenders and borrowers.
If Treasuries were ejected from the market, “Well, holy cripes,” Kochan said in an interview.
