Pre-Open Winners 6/12: (AONE) (KORS) (URI) (more...)

Below are stocks making gains in pre-open action Tuesday"

WINNERS:

• A123 Systems (Nasdaq: AONE) 15% HIGHER; Debuts New Nanophosphate EXT Battery Technology
  
• Michael Kors Holdings Ltd. (Nasdaq: KORS) 11% HIGHER; beat and raise Q4
  
• United Rentals, Inc. (NYSE: URI) 4% HIGHER; new Buy rating.
  
• Seagate Technology (NASDAQ: STX) 2% HIGHER; David Einhorn's Greenlight raises stake.
  
• Juniper Networks, Inc. (Nasdaq: JNPR) 2% HIGHER; buyback
  
• Chart Industries Inc. (Nasdaq: GTLS) 2% HIGHER; positive mention on Mad Money
  
• BioMarin Pharmaceutical Inc. (Nasdaq: BMRN) 2% HIGHER; takeover rumors
  
• Amarin Corporation plc (Nasdaq: AMRN) 1% HIGHER; new Buy rating.

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