The Dow Jones Transportation Average /zigman2/quotes/210598063/realtime DJT +0.88% fell 0.2% in midday trading Wednesday, to buck the gains in the broader stock market, as the shares of all six of the index's airline components fell after United Airlines Holdings Inc. /zigman2/quotes/205037281/composite UAL -1.13% reportedly warned it could furlough more than a third of its workforce. While the Dow transports fell, with 12 of 20 components losing ground, the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA +0.44% rose 34 points, or 0.1%, with 17 of 30 components gaining. United Airlines' stock fell 2.8%, after The Wall Street Journal reported that the airline warned its employees that it could furlough 36,000 of them, and likely make them permanent job cuts, as the COVID-19 pandemic continues to weigh on travel demand. United had about 96,000 employees at the end of 2019. Among the Dow transports' other airline components, shares of American Airlines Group Inc. /zigman2/quotes/209207041/composite AAL -0.54% shed 2.4%, Delta Air Lines Inc. /zigman2/quotes/200327741/composite DAL +0.12% dropped 2.4%, Southwest Airlines Co. /zigman2/quotes/201071949/composite LUV -0.23% lost 2.2%, JetBlue Airways Corp. /zigman2/quotes/201071949/composite LUV -0.23% declined 2.0% and Alaska Air Group Inc. /zigman2/quotes/200972303/composite ALK -0.63% gave up 1.7%.