Short-selling of certain stocks is now forbidden in France, Italy, Spain, and Belgium. The ban on short-selling comes as concerns about Europe's debt worsen.
Markets had rebounded by late in the day, but they're still fragile, economists say. Leaders of France and Germany have announced plans to meet next week to discuss Europe's financial troubles.
Debt plan compromise is reportedly close, which could give global markets a bounce. A default would add huge stress to already slumping markets.
G20 meeting ends with pledge, but no clear indication of how far the G20 nations would go in the event of another financial crisis.