We are now in the thick of earnings season, and individual stock market performance is very dependent on its previous quarter's performance and more importantly their future outlook. We've seen some major players like Google, Microsoft and Amazon miss the mark, and their stocks are getting punished for it. Apple on the other hand reported somewhat decent numbers; however, their iPhone sales have dropped off a little, so the verdict is out on if it can find its footing here or not. These four stocks alone make up nearly 19% of the S&P 500 and nearly 37% of the Nasdaq. Therefore their performance has a large impact the major stock market indices.