The selloff in the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -0.33% is including all 30 of the index's components in premarket trading Tuesday, amid growing worries about the effect of the omicron variant of COVID. Dow futures /zigman2/quotes/210407078/delayed YM00 -0.34% tumbled 423 points, or 1.2% ahead of the open. Among the biggest decliners, shares of American Express Co. /zigman2/quotes/203805826/composite AXP -2.50% fell 2.5%, Boeing Co. /zigman2/quotes/208579720/composite BA +1.85% shed 2.3%, Goldman Sachs Group Inc. /zigman2/quotes/209237603/composite GS -0.41% gave up 2.2% and Travelers Companies Inc. /zigman2/quotes/206313935/composite TRV -0.78% lost 2.0%. Meanwhile, the best performer was Microsoft Corp.'s stock /zigman2/quotes/207732364/composite MSFT -1.20% , which slipped just 0.2%.


















