"Replacing du Pont with the new DowDuPont allows the Dow Jones Industrial Average to maintain its exposure to the Materials sector....The change won’t cause any disruption in the level of the index. The divisor used to calculate the index from the component’s prices on their respective home exchanges will be changed prior to the opening on September 1. This procedure prevents any distortion in the index’s reflection of the portion of the U.S. stock market it is designed to measure."