Carl Icahn Discusses His New Stake In Allergan

Billionaire investor confirmed through his Twitter account that he has acquired a "large position" in

. Shares of Allergan were trading higher by more than 2.50 percent after Tuesday's opening bell. Icahn also

is he is "very supportive" of the company's CEO Brent Saunders.

Icahn's investment in Allergan doesn't mark the first time he has cooperated with Saunders. Icahn helped bring in Saunders as CEO of Forest Labs and the 2 " worked cooperatively and constructively" to "increase value for all Forest shareholders." Forest was ultimately acquired by Actavis which subsequently merged with Allergan. "We have every confidence in Brent's ability to enhance value for all Allergan shareholders," Icahn's statement also read.