A-shares closing review: The ChiNext Index and Shenzhen Component Index both rose over 1%, continuing to reach new highs in the current phase, with CPO and optical fiber concepts strengthening.

Mars Finance News: On May 7, the market saw intraday volatility and rebounded throughout the day. By the close, the Shanghai Composite Index rose 0.48% to 4,180.09 points, the Shenzhen Component Index gained 1.18% to continue setting a new high for more than 5 years, and the ChiNext Index rose 1.45% to keep posting a new high for nearly 11 years; the Beijing Securities 50 Index rose 3.05%. Total trading volume across the Shanghai, Shenzhen, and Beijing markets was 316.83 billion yuan, down 78.3 billion yuan from the previous day; more than 3,500 stocks across the whole market advanced.

As for sectors, fiber optics, CPO, PCB, high-speed copper cable connections, industrial machine tools, computing power leasing, and other sectors were among the top gainers; coal, oil and gas, energy metals, fertilizers, and other sectors led the declines. On the market, the AI industry chain collectively strengthened. Within it, fiber optics concepts were particularly active: Hangdian Co., Ltd. hit its second consecutive limit-up, while Zhongtian Technology and Tongding Interconnect reached the daily limit-up.

The CPO concept moved higher, with Juguang Technology hitting the 20cm limit-up; Dongshan Precision, Shijia Optoelectronics, Huilv Ecology, and Fiberhome Technologies all surged and hit record highs. The PCB concept then broke out: electronic cloth and the CCL segment led the rise, while Jujie Microfiber and Dongcai Technology hit the daily limit-up to record highs.

On the other hand, affected by the fall in international oil prices yesterday, most of the coal, oil, and energy chemical industry chains fell. China National Petroleum and China CNOOC both dropped by more than 5% at one point during the trading session. (Kegu Bao broadcast)