In spite of negative returns for shares of Pfizer and Cisco, the Dow Jones Industrial Average is nearly flat Monday morning. Shares of Pfizer /zigman2/quotes/202877789/composite PFE +2.28% and Cisco /zigman2/quotes/209509471/composite CSCO -0.15% account for -13% of the index's intraday losses, as the Dow /zigman2/quotes/210598065/realtime DJIA +0.36% was most recently trading 2 points lower (0.0%). Pfizer's shares have declined $3.23, or 8.4%, while those of Cisco have dropped $1.53 (3.2%), combining for an approximately 33-point drag on the Dow. Other components contributing significantly to the decline include Verizon Communications Inc. /zigman2/quotes/204980236/composite VZ +0.22% , Merck /zigman2/quotes/209956077/composite MRK +0.84% , and Johnson & Johnson /zigman2/quotes/201724570/composite JNJ +0.42% . A $1 move in any of the benchmark's 30 components equates to a 6.86-point swing.