The official account of CNBC posted about stocks making the biggest moves after hours. It specifically mentioned Lululemon, Zscaler, Guidewire Software and more. The post directs readers to an article that lists some of the companies making headlines in extended trading. The account is noted as belonging to the leading American business news channel and website. No other details on the stock movements or additional firms are provided in the post itself. This post serves as the announcement regarding after-hours activity for these tickers.