U.S. stocks mostly opened lower on Tuesday on track to erase a chunk of the previous session's gains as investors assessed the scope for a further market rally amid worries the U.S. economy's recovery would stay uneven. The S&P 500 /zigman2/quotes/210599714/realtime SPX +1.39% fell 0.4% to 3,166. The Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA +0.83% shed 189 points, or 0.7%, to 26,098. The Nasdaq Composite /zigman2/quotes/210598365/realtime COMP +1.97% rose 2 points to 10,436. In an interview, Atlanta Federal Reserve President Raphael Bostic said the nascent U.S. recovery from the viral outbreak was "leveling off," raising doubts about a V-shaped, or swift and powerful, economic rebound. The worry is that re-acceleration of coronavirus cases across the U.S. could slow economic activity.