常友科技：关于控股股东部分股份质押的公告

Group 1 - The core point of the article is that Changyou Technology announced the pledge of shares by its controlling shareholder, which may impact the company's financial stability and investor confidence [2]. Group 2 - The number of pledged shares is 2,000,000, which represents 18.79% of the shares held by the controlling shareholder and 4.51% of the total share capital of the company [2]. - The pledging party is Shenzhen High-tech Investment Group Co., Ltd., and the purpose of the pledge is for business operational needs [2].