The Gary Stock Company | 172 followers on LinkedIn. Founded in 1986, as an automotive training company and re-tooled as a tech company in 2010, The Gary Stock Company (GSC) is a multifaceted player in the automotive digital marketing and software industry. As the preferred factory partner for several OEM’s including Porsche, Nissan, Infiniti, Jaguar, and Land Rover, GSC provides a versatile, Generation II Responsive dealer website platform that is in currently in use by over 400 automotive dealers in the United States and Canada. GSC has an extensive portfolio of products and services including next generation lead generation and response tools, video packages, mobile application, SEM services and a reputation management tool.