Stocks zigzag on Wall Street as hope, skepticism collide

Stocks are zigzagging in another erratic day of trading on Wall Street Thursday, as hopes for a relatively quick economic recovery continue to collide with skepticism that it can happen anytime soon.
The S&P 500 was up 0.5%, as of 1:30 p.m. Eastern time, in a day of roller-coaster trading. After falling 1.9% shortly after the start of trading, it clawed back nearly all its losses by the late morning, only to fall again and then peek back higher. Stocks in Asia and Europe dropped to sharper l