Thanks for the comments. Bugs, I agree it would be a big PITA if the fund dries up.
That helps to better define my question: What are the chances of the money market account becoming insolvent? Has this happened in the past?
I would think it is a different company division than the subprime loans but I do not know enough to really understand my risk in this account. I opened the account because I assumed the money market deposits were basically risk-free.