Apple is one of many big names in the spotlight next week as earnings season heats up. Ten of the Dow firms and more than a third of the S&P 500 are also set to report.

Apple, which releases its quarterly results after the bell on Tuesday, has seen its shares tumble from an all-time high of $700 last September to under $400. With its stock down over 25 percent since the beginning of the year, the tech giant faces major questions about whether it can keep on innovating and selling more electronics.