TripAdvisor (TRIP) -14.5% premarket after Benchmark downgrades shares to Hold from Buy following...

|About: TripAdvisor Inc. (TRIP)|By:, SA News Editor

TripAdvisor (TRIP) -14.5% premarket after Benchmark downgrades shares to Hold from Buy following the online travel research company's reduced 2012 revenue guidance. Benchmark is troubled by a "surprising" increase in expenses for search engine marketing: "We downgrade as EBITDA growth and margin expansion appear a year away."