Behind losses for shares of UnitedHealth and Walt Disney, the Dow Jones Industrial Average is seeing a selloff Friday morning. The Dow /zigman2/quotes/210598065/realtime DJIA -0.58% was most recently trading 229 points lower (-1.1%), as shares of UnitedHealth /zigman2/quotes/210453738/composite UNH +0.07% and Walt Disney /zigman2/quotes/203410047/composite DIS -3.93% are contributing to the index's intraday decline. UnitedHealth's shares have dropped $7.86, or 3.3%, while those of Walt Disney are down $2.58, or 2.7%, combining for an approximately 71-point drag on the Dow. Also contributing significantly to the decline are American Express /zigman2/quotes/203805826/composite AXP -3.13% , Caterpillar /zigman2/quotes/203434128/composite CAT -1.37% , and Home Depot /zigman2/quotes/208081807/composite HD -0.90% . A $1 move in any one of the 30 components of the Dow results in a 6.78-point swing.