Synopsys shares traded at $425.06, up 2.40%, after the company announced a multi-year partnership with OpenAI to accelerate semiconductor design workflows. The stock recovered from an intraday low near $410, moved toward $440 resistance and settled above the $425 support zone. The companies are developing GPT-Synopsys, an AI-based service that combines advanced models, computing resources and Synopsys electronic design automation tools. The capabilities will be integrated into Synopsys.ai and the Autopilot environment, helping engineers explore designs, analyze results, adjust configurations and support verification before production. The work targets power efficiency, performance and area optimization, while enterprise infrastructure will use encryption and permission controls to protect customer design information. Early technology programs are already underway with semiconductor companies, as Synopsys seeks to strengthen its position in a growing chip market.