Shares of JetBlue Airways Corp. took a hard hit Tuesday, following an analyst’s call to sell the stock, and after the air carrier announced that its long-time chief executive was retiring for health reasons. A look at the stock’s JBLU, -10.65% chart suggests, however, that the downgrade may have had more to do with the selloff, as shares initially gained on the CEO news. 6.0 = JetBlue Airways Corporation - Price (2-day, 1-minute chart, including off-hours trading as of midday trading) 59 -58 57 | 66 CEO suc ...