Do indices only track capital growth or do they also track dividends?

Do stock indices like the DJIA or S&P 500 or Russell 2000 only track capital growth, or do they also factor in dividends in their calculations?

PS: I'm talking about the indices themselves, not index funds and the like.

Submitted January 28, 2017 at 01:27PM by learner1314 http://ift.tt/2jh3MaO