Apple's stock has been slumping, down more than 16% so far this year. Among "Magnificent Seven" components, only Tesla's stock has done worse. Can earnings help change the tune? One issue is that investors may not get a lot of answers to their burning questions on the call.

Apple (AAPL) is scheduled to report quarterly earnings after the closing bell today, with traders anticipating a sizable move from the iPhone maker's stock. Current options pricing suggests traders are expecting the shares could move 4% in either direction by the end of Friday’s trading session from their recent level at $209.