Billionaire's Tweet Prompts Jump in Apple Stock

Carl Icahn said his firm has a "large position" in Apple

Apple shares climbed more than 5 percent Wednesday afternoon, following tweets from billionaire Carl Icahn.

In the tweets, Ichan said his firm has a "large position" in the company. Apple shares had fallen more than 30 percent since September 2012, after investors were unsure whether the company could maintain the company's pace after Steve Jobs' passing.