The Dow dropped 799 points, or 3.1 percent, on Tuesday and Toronto fell into line plunging 211. The erratic performance of recent months is thought by many to foretell a new recession as the bull market of the second decade grows old. Others attribute the declines to a realization by traders that although the US has delayed tariffs on China, the trade war is not over. At one point, the Dow index was down 818 points. Big tech stocks fell sharply. Apple and Alphabet lost more than four percent apiece. Amazon and Netflix plunged more than five percent. The sell-off wipes out a chunk of last week’s huge rally. The Dow jumped 288 points on Monday on relief about the ceasefire between the United States and China on trade.