BRIEF-Porsche SE says acquires 10 percent stake in US group Inrix
September 12, 2014 at 09:05 AM EDT
Sept 12 (Reuters) - Porsche SE : * Says acquires 10 percent stake in US group Inrix, specialised in realtime traffic information * Says invests a total of $55 million * Says investment is the first step of building an investment portfolio to complement existing stake in Volkswagen