Market Overview - On December 31, the last trading day of 2025 for A-shares, the Shanghai Composite Index experienced slight fluctuations, while the ChiNext Index fell over 1% [1] - By midday, the Shanghai Composite Index decreased by 0.07%, the Shenzhen Component Index fell by 0.67%, and the ChiNext Index dropped by 1.1% [1] - The total market turnover for the half-day was 1.32 trillion yuan, an increase of 21 billion yuan compared to the previous trading day, with over 3,000 stocks declining [1] Sector Performance - The AI application sector saw significant gains, with stocks like Wanshili (301066), Desheng Technology (002908), and BlueFocus (300058) hitting the daily limit [4] - The commercial aerospace concept remained active, with stocks such as Reco Defense (002413) achieving three consecutive limit-ups, and others like Shunhao Co. (002565) and Beidou Star (002151) also reaching the limit [4] - The robotics sector showed localized activity, with Fenglong Co. (002931) achieving six consecutive limit-ups and Wuzhou Xinchun (603667) hitting a historical high with three consecutive limit-ups [4] - According to Kaiyuan Securities, leading domestic humanoid robot companies are expected to achieve IPOs in the first half of 2026, laying a solid foundation for mass production [4] - Guotai Junan Securities believes that as leading overseas humanoid robot manufacturers accelerate product iterations, domestic manufacturers will benefit from the accelerated application domestically [4] Notable Stock Movements - The stock of Hengdong Light (920045.BJ), a "small giant" in the optical communication field, debuted on the Beijing Stock Exchange with an opening increase of 1008%, reaching a price of 350 yuan per share [6] - By midday, Hengdong Light's stock price was 322 yuan, with a narrowed increase of 919.31% [6] - Investors who subscribed to the stock at the issue price of 31.59 yuan per share could see a profit of 31,841 yuan for a single lot of 100 shares [6] IPO Performance - The performance of Hengdong Light reflects a broader trend in the Beijing Stock Exchange, where 26 new stocks were listed in 2025, achieving a perfect record with no stocks breaking below their issue price [8] - The lowest first-day increase among these new stocks was 133%, while the highest reached 1211%, with 19 stocks seeing first-day increases exceeding 200% [8]