JetBlue Airways Corporation (NASDAQ:JBLU) is another high-profile airline among the top 10 Stocks targeted by activist investors. Early this year, activist investor Carl Icahn, through Icahn Enterprise, confirmed a 10% stake in the stock worth about $200 million, insisting it was undervalued. JetBlue Airways Corporation (NASDAQ:JBLU) has been trying to cut costs to become more reliable and return to profitability.