JetBlue shares rise as activist investor Carl Icahn takes stake in US airline

Shares in JetBlue rose more than 15% before the US market opened on Tuesday as activist investor Carl Icahn took an almost 10% stake in the airline (David Zalubowski/AP)

Shares in JetBlue were up more than 15% in morning trading in the US as activist investor Carl Icahn took an almost 10% stake in the airline.

The businessman, who purchased the shares in January and February, said in a regulatory filing that he believes JetBlue’s stock is undervalued and represents an attractive investment opportunity.