Market Overview - On December 31, the A-share market opened slightly higher, with the three major indices turning positive: Shanghai Composite Index up 0.1%, Shenzhen Component Index up 0.13%, and ChiNext Index up 0.22% [4][5]. - The People's Bank of China conducted a reverse repurchase operation of 528.8 billion yuan with a fixed rate of 1.40%, resulting in a net injection of 502.8 billion yuan for the day [2]. Sector Performance - The precious metals sector showed overall gains, while sectors such as agriculture, retail, and oil & petrochemicals underperformed [6][10]. - The non-ferrous metals sector experienced a rise, with active trading in industrial metals, copper, cobalt, and nickel stocks [8][9]. Individual Stock Highlights - Jiangxi Copper reached its daily limit, with other stocks like Shengxin Lithium Energy, Guocheng Mining, Jingyi Co., and Zijin Mining also seeing gains [9]. - Jia Mei Packaging achieved an 11-day consecutive limit-up, trading at 13.04 yuan per share [11][12]. - On December 31, the newly listed stock Hengdongguang opened at 350 yuan per share, soaring by 1007.95% and reaching a peak increase of 1128.24% [15][16]. Company Specifics - Hengdongguang, established in 2011, focuses on the research, development, manufacturing, and sales of passive optical devices in the optical communication field. Its products are widely used in data centers and telecom networks, with clients including Google, Amazon, and Microsoft [18]. - The company issued 10.25 million shares at a price of 31.59 yuan per share, aiming to raise approximately 32.38 million yuan, with a net amount expected to be around 27.78 million yuan after deducting issuance costs [19].