Carl Icahn: I'm buying more Apple

If Apple doesn't do a buyback, Carl Icahn, Icahn Enterprises chairman, says he will test the waters on a "proxy fight." He thinks the stock is very "undervalued," and intends to up his stake in the company, which currently stands at $2.5 billion. CEO Tim Cook is doing "great job," he says, but it is derelict to not do a buyback. The activist investor also weighs in on Netflix and Herbalife.