The tests will be the first clear look at which banks are doing better than others, for example, but they won't be the last word.
A hasty exodus could weaken the wobbly banking system, US officials say. They're poised to raise the bar for those wanting out of the Treasury-runprogram.
Hungary and Ukraine received emergency loans from the IMF Sunday. Belarus and Serbia are asking for help, too.
After 778-point plunge, markets need private investment and bank restructuring for a recovery.