Take a look at Ambac and MBIA. Both plummeted on the day with MBI -$4.18 to $9.22 and ABK -$6.73 to $6.24. If I remember correctly, tomorrow Jan. 18th is the the deadline to determine if ABK will receive a cash injection. If it's declined, there could be some significant damage to the market as this ripples through. Compounding it, they also report their results on Tuesday.