The Dow Jones Industrial Average plunged more than 500 points at the opening bell on Tuesday after a tumultuous Monday that saw the single biggest daily points loss in history. At Tuesday's opening, the Dow was down 10 percent since its record high on Jan. 26, "putting it in correction territory," The Wall Street Journal reports.
By 10 a.m., though, the Dow had reversed its course and was up more than 150 points.
"People need to be a little bit cautious," Randy Frederick, the vice president of trading and derivatives for Charles Schwab, told ABC News. "It's time to sit back and wait because we might not have hit bottom."