603023，拟重大资产重组！

Market Performance - The A-share market saw all three major indices rise, with the Shanghai Composite Index increasing by 0.54% to close at 3924.08 points, the Shenzhen Component Index rising by 1.39%, and the ChiNext Index up by 2.6% [1] - The total market turnover reached 2.05 trillion yuan, an increase of over 310 billion yuan compared to the previous trading day, with more than 3400 stocks closing higher, including 78 stocks hitting the daily limit [1] Sector Performance - The optical packaging sector led the gains, with stocks like Dongtian Micro and Zhishang Technology hitting the daily limit of 20% [1] - Other sectors that saw gains included F5G concepts, optical fiber concepts, and high-speed copper cable connections, while coal mining and processing, Tianjin Free Trade Zone, and glyphosate concepts were among the worst performers [1] Historical Highs - A total of 49 stocks reached historical closing highs, with significant representation from the electronics, machinery, and communications sectors, which had 14, 8, and 6 stocks respectively [2] - The average increase for stocks reaching historical highs was 7.42%, with notable performers including Ruikeda, Dongtian Micro, and Zhishang Technology, all of which saw a 20% increase [2] Institutional Ratings - Six stocks received buy ratings from institutions today, including BYD, High Energy Environment, and Reader Media [4] - The average increase for stocks with buy ratings was 0.39%, underperforming the Shanghai Composite Index, with Honghe Technology hitting the daily limit [4] Net Buying and Selling - In the top stocks by net buying, 14 stocks saw net purchases exceeding 10 million yuan, with Xue Ren Group leading at 1.82 billion yuan, followed by Ruikang Pharmaceutical at 1.4 billion yuan [6] - On the selling side, Guangdong Hongda faced the highest net selling at 2.01 billion yuan, followed by Sun Cable and Lixing Co., both exceeding 89 million yuan [6] Notable Announcements - Weidi Co. plans to acquire control of Jiuxing Precision Technology, which is expected to constitute a major asset restructuring [10] - Tianfu Communication is currently planning to issue H-shares on the Hong Kong Stock Exchange [10] - Midea Group has completed a share buyback plan worth 10 billion yuan, intending to cancel 1.24% of the company's total share capital [10]