内外因素边际向好，沪指一度突破4000点，云计算50ETF（516630）涨近1%

Core Viewpoint - The A-share market experienced fluctuations, with the Shanghai Composite Index reaching a high of 4000 points, the highest since August 19, 2015, indicating positive market sentiment and potential upward trends in the near term [1] Market Performance - The three major A-share indices saw a rise and subsequent pullback, with the ChiNext Index rising over 1% at one point [1] - The cloud computing ETF (516630) gained nearly 1% in the afternoon session, with leading stocks such as Taxfriend Co., Kingsoft Office, Yunsai Zhili, and Guotou Intelligent showing strong performance, including Taxfriend hitting the 10% daily limit [1] Sector Analysis - Concept sectors such as cross-strait integration, lithium battery electrolyte, copper-clad laminates, and circuit boards remained active [1] - The technology sector is expected to be a core focus, particularly in areas related to AI industry trends, including computing power (CPO/PCB/liquid cooling/fiber optics) and applications (robots/games/software) [1] - Other sectors with strong support include power equipment (wind power/storage/batteries/power supply equipment), non-ferrous metals (rare earth permanent magnets/precious metals), and machinery (construction machinery) [1] Economic Outlook - Huashan Securities anticipates a 25 basis point rate cut by the end of October's FOMC meeting, with potential positive developments from the upcoming APEC meeting between the US and China [1] - The emphasis on completing annual goals and clarifying the "14th Five-Year Plan" direction suggests improving internal and external factors, which may lead to a sustained upward trend in the market [1]