A股开门红，近4200股上涨，127股涨停，脑机接口、存储芯片集体爆发

Market Overview - The A-share market opened positively on January 5, 2026, with the Shanghai Composite Index rising 1.38% and surpassing the 4000-point mark, marking a twelve-day winning streak [1] - The total market turnover reached 2.57 trillion yuan, an increase of 501.5 billion yuan compared to the previous trading day, with nearly 4200 stocks rising, including 127 stocks hitting the daily limit [1] Sector Performance - The brain-computer interface (BCI) concept led the market, with over thirty constituent stocks hitting the daily limit, and the BCI index rising by 13.7% [4][7] - The insurance sector saw significant gains, with companies like Xinhua Insurance and China Pacific Insurance reaching new historical highs [4] - The commercial aerospace concept remained active, with stocks like Leike Defense and China Satellite Communications showing strong performance [4] - The semiconductor industry chain also performed well, with stocks such as Yaxin Integration and Shenghui Integration hitting the daily limit [4] Key Stocks - Notable stocks in the BCI sector included: - Beikang (920199) with a rise of 29.98% - Botao Bio (688767) increasing by 20.01% - Sanbo Brain Science (300409) also up by 20.01% [5][6] - In the precious metals sector, silver and gold prices surged due to geopolitical tensions, with silver rising over 5% and gold recovering above 4400 USD [7] - The storage chip sector experienced a significant boom, with companies like Yunhan Chip City and Puran Shares hitting the daily limit [8][11] Industry Insights - The semiconductor supply shortage is described as "unprecedented" and "extremely severe," which is expected to impact prices of end products like smartphones [11] - Analysts predict that the storage chip supply shortage will persist into 2026, benefiting companies like Micron Technology [11] - The domestic semiconductor equipment market is expected to grow, with increased production capacity and technological advancements [11]