JetBlue shares jump 12% after Carl Icahn reports stake in airline, calls shares undervalued

JetBlue shares soared nearly 12% Tuesday after reports surfaced that activist investor Carl Icahn scooped up a nearly 10% stake in the airline and said the stock is undervalued.The billionaire corporate raider amassed the stake in a series of purchases starting on Jan. 26, according to regulatory filings obtained by CNN — a week after a federal judge blocked JetBlue’s planned $3.8 billion acquisition of ultra-low-cost carrier Spirit Airlines.JetBlue and Spirit are appealing the decision, which would have c ...