午评：创业板指半日跌超1% 算力租赁、有色板块逆势走强

Market Overview - A-shares experienced fluctuations on February 27, with the Shanghai Composite Index turning negative again and the ChiNext Index dropping over 1% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.59 trillion yuan, a decrease of 53 billion yuan compared to the previous trading day [1] - The Shanghai Composite Index closed at 4139.53 points, down 0.17%, with a trading volume of 674.3 billion yuan; the Shenzhen Component Index closed at 14405.75 points, down 0.68%, with a trading volume of 910.8 billion yuan; the ChiNext Index closed at 3296.23 points, down 1.46%, with a trading volume of 431.4 billion yuan [1] Sector Performance - The computing power leasing concept showed strength against the trend, with stocks like Chengdi Xiangjiang and Yunsai Zhili hitting the daily limit [1] - The Huawei supply chain was active, with stocks such as Tuowei Information and Huasheng Tiancai also hitting the daily limit [1] - The non-ferrous metals sector was notably active, with stocks like Zhangyuan Tungsten and Xianglu Tungsten hitting the daily limit [1] - Conversely, the fiberglass concept stocks declined, with Honghe Technology hitting the daily limit down, and International Composite Materials dropping over 10% [1][2] Institutional Insights - CITIC Securities highlighted opportunities in heavy asset industries due to rising inflation expectations, continuous recovery of PPI, and rising commodity prices, which benefit the balance sheets of heavy asset enterprises [3] - The report emphasized the recovery potential in industries like chemicals and building materials, driven by capacity clearing and policies to stabilize prices [3] - Everbright Securities noted the transition from energy consumption dual control to carbon emission dual control in China, suggesting that assets with low or negative carbon attributes will gain green premiums [3] Technology Developments - CITIC Securities reported that the AI computing power network is undergoing a critical transition towards full optical interconnection, with NPO technology emerging as a balanced solution for bandwidth physical bottlenecks [4] - Major tech companies like Alibaba and Tencent are accelerating the implementation and standardization of NPO architecture, indicating that this technology is entering a phase of large-scale commercialization [4] - The transformation in underlying hardware is expected to significantly restructure the optical communication industry chain, benefiting domestic optical module leaders [4] Regulatory News - The People's Bank of China announced a reduction in the foreign exchange risk reserve ratio for forward foreign exchange sales from 20% to 0%, effective March 2, 2026, to support the development of the foreign exchange market [5] Product Launches - Alibaba's personal AI assistant "Qianwen" is set to enter the AI hardware market, with plans to launch various AI hardware products globally, including the first AI glasses at the 2026 Mobile World Congress [6]