Four of the five Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -1.86% components are contributing to the index's gains, as they would roughly add a net 77 points the Dow's price. Meanwhile, Dow futures /zigman2/quotes/210407078/delayed YM00 -1.61% rose 36 points, or 0.1%, ahead of the open. The biggest gainer was Coca-Cola Co.'s stock /zigman2/quotes/209159848/composite KO -3.16% , which rose 2.7%, with the implied price gain adding about 10 points to the Dow's price, after better-than-expected third-quarter results. Next was McDonald's Corp.'s stock /zigman2/quotes/203508018/composite MCD -1.74% , which gained 2.6% ahead of the open to add about 40 points to the Dow after upbeat 3Q results. Elsewhere, Microsoft Corp. shares /zigman2/quotes/207732364/composite MSFT -1.79% rose 1.8% to add about 37 Dow points after record 1Q results, and Boeing Co.'s stock /zigman2/quotes/208579720/composite BA -0.33% tacked on 2.1% to boost the Dow by 29 points despite a 3Q miss. Meanwhile, Visa Inc.'s stock /zigman2/quotes/203660239/composite V -1.28% was the biggest Dow loser in the premarket after 4Q results, as it fell 2.6% to shave about 39 points off the Dow's price.