The share moves of the six components of the Dow Jones Industrial Average that reported first-quarter results before the open are subtracting a net 80 points from the Dow's price, with 3M Co.'s stock the biggest detractor. 3M shares dropped 6.2% after a downbeat outlook, to shave about 92 points off the Dow. Among other decliners, Travelers Companies Inc. shares shed 3.9% to subtract 37 points from the Dow after missing earnings expectations, while Coca-Cola Co.'s stock fell 1.4% to shave about 4 points off the Dow. Meanwhile, Caterpillar Co.'s stock was the biggest contributor, rallying 3.5% to add about 37 points to the Dow, after reporting better-than-expected results and raising its outlook. Elsewhere, shares of United Technologies Corp. gained 1.3% to add about 11 points to the Dow, and Verizon Communications Inc.'s stock tacked on 1.4% to boost the Dow by about 5 points. The Dow was up 58 points.