Parametric Technology Corporation (PTC)( ) provides Product Lifecycle Management (PLM) engineering CAD/CAM software and content management and dynamic publishing solutions to more than 40,000 companies worldwide. PTC customers include companies in manufacturing, publishing, services, government and life sciences industries. PTC was a member of the S&P 500 Index through the end of 2006, when it instead became listed in the S&P Midcap 400. It is also in the Russell 2000 index.