Group 1 - The Shanxi sector showed strong performance on October 15, with an overall increase of 1.21%, indicating sufficient short-term momentum and positive market sentiment [1] - Leading the gains in the Shanxi sector was Guo New Energy, which hit the daily limit and achieved a final increase of 10.12%, marking its second consecutive day of limit-up trading with a cumulative rise exceeding 20% [1] - Other notable gainers included Zhendong Pharmaceutical, Jinbo Biological, Shitou Co., and Dongjie Intelligent, with respective increases of 5.64%, 5.00%, 4.27%, and 3.43% compared to the previous trading day [1] Group 2 - Dongjie Intelligent, which had been in a downward trend for several consecutive trading days with a cumulative decline nearing 30%, finally turned to an increase on October 15, potentially due to a recent contract signed with Jiyuan Steel for a 50 million yuan intelligent storage project [1] - Among the declining stocks in the Shanxi sector, the overall drop was relatively small, with Huayang New Materials, Huayang Co., and Antai Group experiencing declines of 1.41%, 1.30%, and 1.21% respectively [1] - The three major indices all showed upward trends on October 15, with the ChiNext Index leading at a 2.36% increase, followed by the Shenzhen Component Index at 1.73%, and the Shanghai Composite Index at 1.22% [2]