收评：创业板指涨超3%，铜缆高速连接、CPO概念拉升

Core Viewpoint - The stock market experienced significant fluctuations on the 28th, with major indices showing positive performance, particularly in the technology and communication sectors [1] Market Performance - The Shanghai Composite Index rose by 1.14% to close at 3843.60 points - The Shenzhen Component Index increased by 2.25% to 12571.37 points - The ChiNext Index saw a rise of 3.82% to 2827.17 points - The STAR Market 50 Index surged by 7.23% to 1364.60 points - The total trading volume across the Shanghai and Shenzhen markets reached 30,013 billion [1] Sector Performance - Strong performing sectors included semiconductors, communication equipment, components, telecom operations, tourism services, securities, aviation, and IT equipment - Weaker sectors included forestry, planting, automotive services, real estate, and traditional Chinese medicine [1] Concept Stocks - Notable concept stocks that saw gains included those related to copper cable high-speed connections, CPO concepts, advanced packaging, PCB concepts, and photolithography machines [1]