
Apple's stock is now down 20% since its all-time high set in mid-September, with investors concerned about the company's prospects for the future amid a management shakeup and questions about where the company's next major revenue growth driver will come from. Samsung's rise to prominence in mobile device markets is also weighing on Apple as the iPhone's market share growth has slowed or even declined in recent quarters.

Article Link: 'Nightline' Looks at Apple's Woes as Stock Declines 20% from All-Time High