Xin Lang Ji Jin·2025-09-04 07:45Core Viewpoint - The AI market experienced significant volatility on September 4, with a sharp decline in optical module stocks, particularly affecting the entrepreneurial board AI index, which has over 51% optical module content [1] Group 1: Market Performance - The leading optical module companies, including "Yizhongtian" (Xinyi Sheng, Zhongji Xuchuang, Tianfu Communication), saw declines exceeding 12% [1] - The entrepreneurial board AI ETF (159363), which tracks the largest and most liquid index, experienced a drop of over 9%, potentially marking its largest single-day decline since April 8, with a real-time transaction volume exceeding 2.1 billion [1] Group 2: Fund Manager Insights - Fund manager Cao Xuchen noted that the optical module sector had become a focal point for market investment due to strong fundamentals and profit effects, leading to significant gains [3] - The rapid increase in stock prices led to profit-taking by short-term investors, resulting in a potential sell-off if new capital fails to sustain price increases [3] - The current market is characterized by short-term profit-taking and long-term investors gradually entering the market, with initial short-term pressures likely dominating [3] Group 3: Investment Recommendations - It is recommended to focus on the entrepreneurial board AI ETF (159363) and its associated funds, which allocate approximately 70% to computing power and 30% to AI applications, effectively capturing AI market trends [4] - As of September 3, 2025, the entrepreneurial board AI ETF (159363) reached a new high of over 5.1 billion, with an average daily transaction volume exceeding 700 million over the past month, ranking first among six ETFs tracking the entrepreneurial board AI index [4]