Gapping up on strong earnings/guidance:

GES +5.1%... Jana Partners and SAC Capital seek sale of AMTD, suggest SCHW and ETFC as merger partners: AMTD +5.3%, ETFC +3.1%, SCHW +1.3%... Other news: IVAN +17.9% (co 'successfully' demonstrates final key commercial configuration of heavy oil upgrading technology), TBUS +11.1% (announces orders for TwinVision color electronic destination sign systems), ACAD +10.2% (positive Cramer mention), TAL +5.9% (exploring strategic alternatives, including possible sale), GNVC +3.0% (co holding conference call at 8:30 E.T. to review data presented at ASCO), RACK +1.9% (still checking around), OPWV +1.7% (Unstrung reports there is still talk that Sybase could be waiting in the wings with an offer).