财联社·2026-03-18 07:14Market Overview - The A-share market saw all three major indices close in the green, with the Shanghai Composite Index ending a four-day losing streak, the Shenzhen Component Index rising over 1%, and the ChiNext Index increasing by more than 2% [1][3] - The total trading volume in the Shanghai and Shenzhen markets was 2.05 trillion yuan, a decrease of 161.8 billion yuan compared to the previous trading day [1] Sector Performance - The computing power industry chain experienced a significant surge, with the CPO concept rebounding across the board. Major players in the "Yizhongtian" optical module sector saw substantial gains, including Ruisi Kanda with four consecutive daily limits and Kewan Technology with two limits in three days [1] - The liquid cooling server concept also saw a strong performance, with companies like Dayuan Pump Industry, Jialitu, Ningbo Jingda, and Qiangrui Technology hitting the daily limit [1] - The computing power leasing concept strengthened, with Data Port, Zhongbei Communication, and Yunsai Zhiliang all reaching the daily limit [1] - The collaborative computing power concept was active, with Shaoneng Co. and Guangdong Power A both hitting the daily limit [1] - The storage chip sector rose, with Langke Technology achieving two limits in three days and Baiwei Storage increasing over 9% to set a new historical high [1] Declining Sectors - Oil and gas stocks weakened, with companies like Intercontinental Oil and Tongyuan Petroleum experiencing significant declines [2] - The chemical sector faced a downturn, with Jinniu Chemical and Lutianhua hitting the daily limit down [2]