Shares of Boeing and Visa are posting losses Monday afternoon, leading the Dow Jones Industrial Average selloff. Shares of Boeing BA, -0.60% and Visa V, -1.98% have contributed to the index’s intraday decline, as the Dow DJIA, +0.29% was most recently trading 548 points, or 1.6%, lower. Boeing’s shares are off $6.93 (3.4%) while those of Visa have dropped $6.20, or 3.0%, combining for a roughly 87-point drag on the Dow. Also contributing significantly to the decline are Merck MRK, -1.44%, Coca-Cola KO, -0.81%, and Johnson & Johnson JNJ, -1.15%. A $1 move in any one of the 30 components of the benchmark results in a 6.59-point swing.