Shares of 3M and Goldman Sachs are trading lower Friday morning, dragging the Dow Jones Industrial Average into negative territory. Shares of 3M MMM, -2.39% and Goldman Sachs GS, -1.82% have contributed to the index’s intraday decline, as the Dow DJIA, -0.14% was most recently trading 89 points, or 0.3%, lower. 3M’s shares have dropped $4.18, or 2.5%, while those of Goldman Sachs are off $5.42 (1.9%), combining for a roughly 63-point drag on the Dow. Also contributing significantly to the decline are American Express AXP, -0.79%, Merck MRK, -1.69%, and Verizon Communications Inc. VZ, -1.43%. A $1 move in any of the index’s 30 components equates to a 6.58-point swing.