Huddled in his office Wednesday with top advisers, Treasury Secretary Henry Paulson watched his financial-data terminal with alarm as one market after another began go haywire. Investors were fleeing money-market mutual funds, long considered ultra-safe. The market froze for the short-term loans that banks rely on to fund their day-to-day business. Without such mechanisms, the economy would grind to a halt. Companies would be unable to fund their daily operations. Soon, consumers would panic.
Bank money market funds are covered by FDIC and joint accounts are covered as 2 accounts.
If a couple has a joint checking account and a joint savings account at the same insured bank, each co-owner's shares of the two accounts are added together and insured up to $100,000, providing up to $200,000 in coverage for the couple's joint accounts.