The following video is part of our "Motley Fool Conversations" series, in which senior analyst Anand Chokkavelu, CFA, discusses topics across the investing world. The Dow Jones Industrial Average is made up of 30 stocks, but some impact the index's movements a whole lot more than the others. The top three are IBM, Chevron, and Caterpillar. IBM alone makes up about 12%, about the same impact as the bottom 10 combined. Stretching out to the top 10 gets you to 56% of the index. Anand explains how the index works in the video below.
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